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Refer to the given figure and select the incorrect statement regarding this.
(b) The given figure represents tap root system. Lateral branches of the roots develop from the interior (usually pericycle) of the parent root. Such an origin is called endogenous.
Read the given statements and select the correct option. Statement 1 : Root cap protects the root meristem from the friction of the soil and its outer cells are continuously replaced by newer ones.
Statement 2 : The effect of the soil-friction damages the outer cells of root cap which are peeled off and replaced by new cells produced by root meristem.
a
Which of the following statements is correct with respect to the given figure showing different zones of a typical root?
(c) Part A is the root hair zone which represents the zone of differentiation or maturation. This is the most suitable part for anatomical studies of root because different types of primary tissues differentiate or mature in this region. Xylem, phloem, pericycle, endodermis, cortex and epiblema are clearly visible in this region.
Edible roots are found in
(d) The edible part of sweet potato is a modified adventitious fleshy root which is called as tuberous root or single root tuber. Due to storage of food, the adventitious roots become thick and fleshy. In sweet potato, the swollen roots do not assume any shape but occur singly. Very fine secondary roots occur all over the tuber.
Identify the type of modified root and select the correct statement regarding it.
(c) The given figure is of fasciculated root, which is the modified adventitious root that stores food material.
Select the mismatched pair.
(c) Fasciculated fleshy roots are modified adventitious roots, in which swollen roots or root tubers occur in clusters from lower nodes of the stem, e.g., Dahlia and Asparagus. In Curcuma, nodulose roots are found where the swellings occur only near the tips.
Given below are some differences between an underground stem and a root. Select the option that identifies the incorrect pair of differences.
\(
\begin{array}{|c|c|c|}
\hline & \text { Underground stem } & \text { Root } \\
\hline \text { (i) } & \begin{array}{l}
\text { It is differentiated into } \\
\text { nodes and internodes. }
\end{array} & \begin{array}{l}
\text { It is not differentiated } \\
\text { into nodes and } \\
\text { internodes. }
\end{array} \\
\hline \text { (ii) } & \begin{array}{l}
\text { Scale leaves are present } \\
\text { at the nodes. }
\end{array} & \begin{array}{l}
\text { Scale leaves are } \\
\text { absent in roots. }
\end{array} \\
\hline \text { (iii) } & \begin{array}{l}
\text { Axillary buds are } \\
\text { present in the axil of } \\
\text { scale leaves. }
\end{array} & \begin{array}{l}
\text { Axillary buds are } \\
\text { present at root tips. }
\end{array} \\
\hline \text { (iv) } & \begin{array}{l}
\text { Branches arise exogeno- } \\
\text { usly. }
\end{array} & \begin{array}{l}
\text { Branches arise } \\
\text { endogenously. }
\end{array} \\
\hline \text { (v) } & \begin{array}{l}
\text { Flowers and fruits are } \\
\text { usually present. }
\end{array} & \begin{array}{l}
\text { Flowers and fruits are } \\
\text { absent. }
\end{array} \\
\hline \text { (vi) } & \begin{array}{l}
\text { These usually perform } \\
\text { the function of food } \\
\text { storage. }
\end{array} & \begin{array}{l}
\text { These always perform } \\
\text { the function of food } \\
\text { storage. }
\end{array} \\
\hline
\end{array}
\)
c
Unbranched, erect, cylindrical stout axis with distinct nodes and internodes and with jointed appearance is called as
(c) Erect, unbranched stems with distinct nodes and internodes are called culms, nodes are swollen giving a jointed appearance, e.g., bamboo.
Match column I with column II and select the correct option from the given codes.
\(
\begin{array}{|c|l|c|l|}
\hline & \text { Column I } & & \text { Column II } \\
\hline \text { A. } & \begin{array}{l}
\text { Vegetative } \\
\text { buds }
\end{array} & \text { (i) } & \begin{array}{l}
\text { Buds develop in axils of } \\
\text { leaves }
\end{array} \\
\hline \text { B. } & \text { Floral buds } & \text { (ii) } & \text { Buds produce leafy shoots } \\
\hline \text { C. } & \text { Axillary buds } & \text { (iii) } & \begin{array}{l}
\text { Reproductive buds that } \\
\text { produce flowers }
\end{array} \\
\hline \text { D. } & \begin{array}{l}
\text { Accessory } \\
\text { buds }
\end{array} & \text { (iv) } & \begin{array}{l}
\text { Additional buds borne at leaf } \\
\text { bases }
\end{array} \\
\hline
\end{array}
\)
a
Read the given statements and select the correct ones.
(i) Root caps are present in prop roots.
(ii) Pneumatophores help to get oxygen for respiration.
(iii) Edible part of ginger is underground stem.
(iv) Hydrophytes usually possess a well-developed root system.
(c) Hydrophytes are plants adapted for growing in water. In hydrophytes, roots are of secondary importance so they are poorly developed.
The ‘eyes’ of the potato tuber represent
(a) In potato, the stem nature is evident by the presence of eyes on its brownish corky surface. Each eye is a pit-like structure and represents the node. At the rim of the eye, scale leaf scar is seen. Buds are situated in the pit of the eye.
In Opuntia, the function of photosynthesis is carried out by
(c) Phylloclades of Opuntia represent flattened green fleshy stems of unlimited growth which have taken over the function of photosynthesis.
______ are the green stems of limited growth which have taken over the function of photosynthesis from leaves.
b
Match column I with column II and select the correct option from the given codes.
\(
\begin{array}{|c|l|r|l|}
\hline & \text { Column I } & & \text { Column II } \\
\hline \text { A. } & \text { Thorns } & \text { (i) } & \text { Vegetative propagation } \\
\hline \text { B. } & \text { Phylloclades } & \text { (ii) } & \text { Defensive mechanism } \\
\hline \text { C. } & \text { Runners } & \text { (iii) } & \text { Mechanical support } \\
\hline \text { D. } & \text { Stilt roots } & \text { (iv) } & \text { Absorption of nutrition } \\
\hline \text { E. } & \text { Haustoria } & \text { (v) } & \text { Photosynthesis } \\
\hline
\end{array}
\)
c
_____ are one internode long runners, usually found in rosette plants at the ground/water level.
(b) Offsets are one internode long, thick, small runners bearing a cluster of leaves in rosette manner at the water or ground level and adventitious roots below the water or ground level arising from all nodes, e.g., Pistia (water lettuce), Eichhornia crassipes, etc.
In some _____, the leaf base may become swollen and is called as ______.
(b) In many legumes, leaf base is swollen, it is known as pulvinus. It is responsible for sleep and shock movements of certain leaves, e.g., Mimosa pudica.
Which of the following represents the functions of veins in the leaves?
d
Parallel venation is a characteristic of monocots. Which of the following is an exception to this generalisation?
(d) In case of parallel venation, the veins run parallel to each other and network is not formed. This type of venation is the characteristic feature of monocots. There are few exceptions, e.g. Smilax, Colocasia, Alocasia, Dioscorea, etc.
A simple leaf can be differentiated from the pinnae of a compound leaf on the basis of presence or absence of
(c) A compound leaf is that where the lamina is completely broken down into distinct segments or leaflets which are separately articulated at base. Leaflets resemble leaf in having base, stalks, blade. Leaflets differ from the whole leaves in the absence of axillary buds, basal stipules and origin in the same plane.
Study the given figures and identify the kind of phyllotaxy.
(b) In alternate (or spiral) phyllotaxy, only one leaf is borne on a node and the leaves of the adjacent nodes roughly lie towards the opposite sides (e.g., Hibiscus). In opposite phyllotaxy, two leaves are borne on the opposite sides of a single node, e.g., guava in whorled or verticillate phyllotaxy, three (e.g., Nerium) or more than three (e.g., Alstonia) leaves develop from a single node.
In spiral phyllotaxy, the number of leaves at each node is
(a) The simplest type of phyllotaxy is alternate or spiral distichous in which the leaves of a branch form two alternate rows (e.g., Grass). In spiral phyllotaxy, a single leaf arises at each node in an alternate manner.
In _____ phyllotaxy, a pair of leaves arise at each node and lie opposite to each other as in ____ plant.
c
Identify the group of plants possessing leaf tendrils.
(a) Leaf tendrils are thread-like sensitive structures which can coil around a support to help the plant in climbing. Leaf tendrils are usually unbranched and devoid of scales, e.g., leaflet tendrils in Pisum sativum (pea) and leaf tip tendrils in Gloriosa (Glory lily).
Different parts of a leaf are modified into tendrils which help the plant in climbing up. Identify the type of tendril that is seen in Clematis.
(b) The petiole, rachis and the stalk of the leaflets (petiolules) in Clematis are sensitive to contact and can coil around the support to help the plant in climbing. Such tendrils are known as rachis and petiolule tendrils.
Leaf tip tendrils are present in
d
Spines present on the areoles of Opuntia represent
(b) In Opuntia, leaves are modified into spines in order to protect the plant from grazing animals and excessive transpiration.
Which of the following represents the edible swollen portion of Allium cepa?
(d) In onion, the fleshy scales represent leaf bases in the outer part and scale leaves in the central region. They occur in concentric fashion. The bulb is covered by a whitish or pinkish tunic. Fleshy scales enclose terminal bud. Fleshy scales represent the edible part of the onion.
Which of the following plant parts in garlic and onion are edible?
b
Which of the following is an incorrect pair?
(c) Phyllode is flattened petiole or rachis of a leaf which carries out the function of photosynthesis (e.g., Parkinsonia, Acacia).In Asparagus, cladode type of stem modification can be seen.
Select the incorrect match with respect to the plant and the relative plant part modified for food storage.
(d) In Dahlia, adventitious roots are modified to fasciculated fleshy roots which store food. Swollen roots or root tubers occur in clusters and lie at the base of the stem.
Which plant part is modified into pitcher in pitcher plants?
(c) In Nepenthes (pitcher plant), the leaves are modified into pitchers to catch and digest the insects. The pitcher of Nepenthes is modified lamina. The apex of leaf is modified into lid which covers the opening of pitcher.
In (i) type of inflorescence, main axis terminates in a flower, hence is limited in growth and flowers are borne in (ii) succession.
d
Identify the types of inflorescence shown in the figure and select the correct option for A and B.
b
Match column I with column II and select the correct option from the given codes.
\(
\begin{array}{|l|l|r|l|}
\hline & \text { Column I } & & \text { Column II } \\
\hline \text { A. } & \text { Pedicel } & \text { (i) } & \text { Reduced leaf } \\
\hline \text { B. } & \text { Peduncle } & \text { (ii) } & \text { Stalk of the flower } \\
\hline \text { C. } & \text { Bract } & \text { (iii) } & \text { Stalk of the leaf } \\
\hline \text { D. } & \text { Petiole } & \text { (iv) } & \text { Inflorescence axis } \\
\hline
\end{array}
\)
a
Refer to the given figures, showing relative position of different floral parts on the thalamus and select the correct option.
a
If the gynoecium is present in the topmost position of the thalamus, then the flower is referred to as
(a) In hypogynous condition of flowers, the thalamus is convex or conical. Gynoecium occupies the topmost (superior) position at the thalamus and other parts of flower are borne successively below. Androperianth or other floral organs are inferior, e.g., Hibiscus rosa sinensis, Ranunculus, Brassica, brinjal, etc.
Read the given statements.
(i) Gynoecium occupies the highest position while the other floral parts are situated below it.
(ii) Ovary is superior.
(iii) Examples are Brassica, Hibiscus, brinjal, etc.
Which condition of flowers is being described by the above statements?
(a) In hypogynous condition of flowers, the thalamus is convex or conical. Gynoecium occupies the topmost (superior) position at the thalamus and other parts of flower are borne successively below. Androperianth or other floral organs are inferior, e.g., Hibiscus rosa sinensis, Ranunculus, Brassica, brinjal, etc.
Ovary is said to be half inferior in which of the following conditions?
b
In _____ flowers, margin of thalamus grows upward enclosing the ovary completely and getting fused with it.
(c) In epigynous flowers, the thalamus is hollowed out in the form of a flask but its internal wall is fused with wall of the ovary. Only the style and stigma of the pistil are observable from the upper side. Other floral organs are borne at the top of ovary. The ovary or gynoecium is said to be inferior while other floral organs are superior, e.g., apple, sunflower, cucumber, etc.
Based on the position of floral parts on thalamus, the flowers are described as hypogynous, perigynous and epigynous. Which of the following floral forms (A-D) represent the flowers of Rosa and Prunus respectively?
(b) In perigynous condition of a flower, the gynoecium is situated in the centre and other floral parts are located on the rim of the thalamus almost at the same level. Ovary is said to be half inferior, e.g., Rosa (flask-shaped thalamus), Prunus (Cup-shaped thalamus).
Identify the different types of aestivation (A, B, C and D) and select the correct option.
d
In ______ aestivation, sepals or petals in a whorl just touch one another at the margins, without overlapping, as is found in _____.
(a) In valvate aestivation, margins of the adjacent petals touch each other without overlapping, e.g., corolla of Brassica, Calotropis.
The given figure represents vexillary aestivation. Select the suitable labels for P, Q and R.
(d) In vexillary/descending imbricate aestivation, the posterior large bilobed petal (standard or vexillum) overlaps the two lateral petals (wings or alae) and the latter overlap the two anterior petals which are fused by the upper anterior margins to form a boat shaped structure (keel or carina). It is also called papilionaceous corolla and is found in members of Family Papilionaceae.
Select the correct option for A, B and C in the given diagram of papilionaceous corolla.
(c) In vexillary/descending imbricate aestivation, the posterior large bilobed petal (standard or vexillum) overlaps the two lateral petals (wings or alae) and the latter overlap the two anterior petals which are fused by the upper anterior margins to form a boat shaped structure (keel or carina). It is also called papilionaceous corolla and is found in members of Family Papilionaceae.
Find out the incorrect match.
(c) When stamens are attached to the perianth, they are known as epiphyllous, e.g., Asparagus, lily.
Select the incorrect pair out of the following.
(b) Some flowers (members of Family Fabaceae) show diadelphous kind of arrangement i.e., (9) + 1 or (5) + (5), in which fusion of filaments produces two groups. In cucurbits, synandrous condition of stamens is present in which stamens are fused by both their filaments as well as anthers.
Syngenesious condition of stamens is found in Family
(a) In Family Asteraceae, anthers are syngenesious (synantherous) in which stamens are fused together at their edges by anthers only, forming a ring around the gynoecium. The filaments are free, e.g., sunflower.
Monothecous condition of stamens, i.e., presence of a single anther lobe is a characteristic of Family
(b) The anthers which contain only one anther lobe are called monothecous anthers. Monothecous anthers are bisporangiate (contain two pollen sacs), as in Family Malvaceae.
Identify the different types of placentation shown in figure and select the correct option.
b
In placentation, a monocarpellary ovary bears a single longitudinal ovule along the junction of two fused margins.
(d) In marginal placentation, the placenta forms a ridge along the ventral suture of the ovary and the ovules are borne on this ridge forming two rows, e.g., pea.
Which kind of placentation is represented by the given figure?
(b) When the placenta is axial and the ovules are attached to it in a multilocular ovary, the placentation is said to be axile, e.g., China rose, tomato and lemon.
Which of the following figures represents a typical placentation as seen in Hibiscus rosa sinensis (China rose)?
(a) Option (a) represents axile placentation as seen in China rose. It is a type of placentation, which occurs in syncarpous pistils. Ovary is partitioned into 2 or more chambers. Placentae occur in the central region where the septa meet so that an axile column bearing ovules is formed. In China rose, ovary is pentalocular.
Ovary is one-chambered but it becomes two-chambered due to the formation of false septum in
(a) Parietal placentation occurs in the members of Family Brassicaceae. In Brassica, ovary is unilocular but modification occurs and it becomes bilocular. A false septum called replum develops between the two parietal placentae in mustard and other members of family.
Match column I with column II and select the correct option from the given codes.
\(
\begin{array}{|l|l|r|l|}
\hline & \text { Column I } & & \text { Column II } \\
\hline \text { A. } & \text { Marginal } & \text { (i) } & \text { Sunflower, marigold } \\
\hline \text { B. } & \text { Parietal } & \text { (ii) } & \text { Pea } \\
\hline \text { C. } & \text { Axile } & \text { (iii) } & \text { Mustard, Argemone } \\
\hline \text { D. } & \text { Free central } & \text { (iv) } & \text { Hibiscus, tomato, lemon } \\
\hline \text { E. } & \text { Basal } & \text { (v) } & \text { Dianthus, Primrose } \\
\hline
\end{array}
\)
a
Given figure represents a drupe of mango. Select the option that correctly identifies A, B, C and D.
b
Maize grain is a fruit known as
(b) Caryopsis is a small, indehiscent, one seeded fruit developing from a monocarpellary ovary in which the pericarp is fused with the seed coat. The seed completely fills the chamber, e.g., wheat, maize.
Edible part of apple and pear is
(d) Apple and pear are pome type of fruits. Pome is a false (or accessory), simple succulent fruit that develops from an inferior compound ovary. The fruit contains seeds inside. The outer fleshy part of the fruit is thalamus, which is the edible part.
Refer to the given figure.
(b) The given figure represents true berry or baccate fruit of Lycopersicum esculentum (tomato). It is derived from a bicarpellary, syncarpous bi-to tetra-locular ovary with swollen placentae.
X is a scar on the seed coat through which the developing seeds were attached to the fruit; above the X is a small pore called Y. Identify X and Y and select the correct option.
\(
\begin{array}{|l|l|l|}
\hline & \text { X } & \text { Y }Â \\
\hline \text { (a) } & \text { Micropyle } & \text { Hilum } \\
\hline \text { (b) } & \text { Hilum } & \text { Micropyle } \\
\hline \text { (c) } & \text { Testa } & \text { Tegmen } \\
\hline \text { (d) } & \text { Chalaza } & \text { Micropyle } \\
\hline
\end{array}
\)
(b) The outermost covering of a dicotyledonous seed is the seed coat. The seed coat has two layers, the outer testa and the inner tegmen. The hilum is a scar on the seed coat through which the developing seeds were attached to the fruit. Above the hilum is a small pore called the micropyle. Within the seed coat is the embryo, consisting of an embryonal axis and two cotyledons.
Refer to the given figures showing structure of dicotyledonous seed and select the option that correctly identifies any of the labelled parts.
c
Endospermic seeds are found in
(d) Food storing tissue of a seed is endosperm. In flowering plants, it is produced as a result of double fertilisation. In most monocot and some dicot seeds, the food reserve remains in the endosperm. They are called endospermic or albuminous seeds, e.g., cereals, castor bean, coconut, rubber. In majority of dicot seeds (e.g. pea, gram, bean, mustard, groundnut) and some monocot seeds (e.g., orchids, Sagittaria), the endosperm is consumed during seed development and the food is stored in cotyledons and other regions. They are called non-endospermic or exalbuminous seeds.
In albuminous seeds, food is stored in _____ and in exalbuminous seeds, food is stored in _____.
(a) Food storing tissue of a seed is endosperm. In flowering plants, it is produced as a result of double fertilisation. In most monocot and some dicot seeds, the food reserve remains in the endosperm. They are called endospermic or albuminous seeds, e.g., cereals, castor bean, coconut, rubber. In majority of dicot seeds (e.g. pea, gram, bean, mustard, groundnut) and some monocot seeds (e.g., orchids, Sagittaria), the endosperm is consumed during seed development and the food is stored in cotyledons and other regions. They are called non-endospermic or exalbuminous seeds.
Cereals, castor and coconut possess ____ seeds.
(a) Food storing tissue of a seed is endosperm. In flowering plants, it is produced as a result of double fertilisation. In most monocot and some dicot seeds, the food reserve remains in the endosperm. They are called endospermic or albuminous seeds, e.g., cereals, castor bean, coconut, rubber. In majority of dicot seeds (e.g. pea, gram, bean, mustard, groundnut) and some monocot seeds (e.g., orchids, Sagittaria), the endosperm is consumed during seed development and the food is stored in cotyledons and other regions. They are called non-endospermic or exalbuminous seeds.
Monocotyledonous seeds possess a single cotyledon which is represented by
(c) The single cotyledon of monocotyledonous seed (e.g., maize grain) is called scutellum. It occupies the major portion of the embryo regions of grains.
Coleorhiza and coleoptile are the protective sheaths covering ____ and _____ respectively.
(a) The embryonal axis is differentiated into radicle and plumule. In monocot seeds, the radicle is protected by a sheath called coleorhiza and the plumule is protected by coleoptile.
Given figure represents the longitudinal section of a monocotyledonous embryo.
Identify the parts labelled as A, B, C and D from the list (i-vii) and select the correct option.
(i) Scutellum
(ii) Coleoptile
(iii) Shoot apex
(iv) Epiblast
(v) Radicle
(vi) Root cap
(vii) Coleorhiza
b
Which floral conditions are represented by the symbols \(\oplus\) and \(\%\) respectively?
b
Which of the following symbols denotes presence of tepals and epitepalous stamens in a flower?
b
Marginal placentation is generally found in Family
(a) In marginal placentation, one or two alternate rows of ovules occur longitudinally along the ridge in the wall of the ovary in the area of fusion of its two margins or ventral suture. A true placenta is believed to be absent. Ovary is unilocular. Marginal placentation is found in monocarpellary pistils of Leguminosae (e.g., Pea, Cassia, Acacia) and other plants (e.g., Larkspur).
Identify the correct feature of the family to which given floral formula belongs.
(b) The given floral formula belongs to Family Fabaceae. Flower is zygomorphic and papilionaceous. Inflorescence is racemose whereas fruit is a legume; seed; one to many.
Add the missing floral organs in the given floral formula of Family Fabaceae.
c
Which floral family has \((9)+1\) arrangement of anthers in the androecium?
(c) Most common condition of androecium in the members of Family Fabaceae is diadelphous, (9) +1 , in which out of total 10 stamens, nine are united by the lower half of their filaments to form an incomplete tube around the pistil. Tenth posterior stamen is free.
Match column I with column II and select the correct option from the given codes.
\(
\begin{array}{|c|l|c|l|}
\hline & \begin{array}{l}
\text { Column I } \\
\text { (Members of } \\
\text { Fabaceae) }
\end{array} & & \begin{array}{l}
\text { Column II } \\
\text { (Economic } \\
\text { importance) }
\end{array} \\
\hline \text { A. } & \begin{array}{l}
\text { Gram, sem, moong, } \\
\text { soybean }
\end{array} & \text { (i) } & \text { Timber } \\
\hline \text { B. } & \text { Soybean, groundnut } & \text { (ii) } & \text { Medicine } \\
\hline \text { C. } & \text { Indigofera } & \text { (iii) } & \text { Fodder } \\
\hline \text { D. } & \text { Sunhemp } & \text { (iv) } & \text { Fibres } \\
\hline \text { E. } & \text { Sesbania, Trifolium } & \text { (v) } & \text { Dye } \\
\hline \text { F. } & \text { Dalbergia sissoo } & \text { (vi) } & \text { Edible oil } \\
\hline \text { G. } & \text { Glycyrrhiza glabra } & \text { (vii) } & \text { Pulses } \\
\hline
\end{array}
\)
b
A plant has a butterfly shaped flower with one standard, two wing like and two keel petals. The plant belongs to the Family
(a) In vexillary/descending imbricate aestivation, the posterior large bilobed petal (standard or vexillum) overlaps the two lateral petals (wings or alae) and the latter overlap the two anterior petals which are fused by the upper anterior margins to form a boat shaped structure (keel or carina). It is also called papilionaceous corolla and is found in members of Family Papilionaceae.
Persistent calyx is the character of plants belonging to Family
(a) In members of Family Solanaceae (e.g., Solanum), sepals remain attached till the maturation of the fruit and do not fall off, thus termed persistent.
Study carefully the given floral diagram and select the option which correctly represents the related floral formula.
(d) The given floral diagram is of Family Solanaceae (potato family). Its flower is bisexual and actinomorphic, ebracteate or bracteate, pentamerous, cyclic. Calyx 5, gamosepalous, persistent. Corolla 5, gamopetalous, often plicate in bud. Androecium 5 , polyandrous and epipetalous. Gynoecium bicarpellary and syncarpous. Ovary superior placed obliquely, placentation axile with swollen-placenta. Fruit is berry or capsule.
The floral formulaÂ
belongs to the Family
(c) The given floral diagram is of the Family Solanaceae (potato family). Its flower is bisexual and actinomorphic, ebracteate or bracteate, pentamerous, cyclic. Calyx 5, gamosepalous, persistent. Corolla 5, gamopetalous, often plicate in bud. Androecium 5 , polyandrous and epipetalous. Gynoecium bicarpellary and syncarpous. Ovary superior placed obliquely, placentation axile with swollen-placenta. Fruit is berry or capsule.
Identify the family which shows the following diagnostic features.
Flowers pentamerous, gynoecium-bicarpellary, syncarpous, ovary placed obliquely, placentation axile, placenta swollen.
(a) The given floral diagram is of Family Solanaceae (potato family). Its flower is bisexual and actinomorphic, ebracteate or bracteate, pentamerous, cyclic. Calyx 5, gamosepalous, persistent. Corolla 5, gamopetalous, often plicate in bud. Androecium 5 , polyandrous and epipetalous. Gynoecium bicarpellary and syncarpous. Ovary superior placed obliquely, placentation axile with swollen-placenta. Fruit is berry or capsule.
Which of the following floral formulae corresponds to Family Liliaceae?
(d) Flowers of Liliaceae family are bracteate or ebracteate, actinomorphic, bisexual, trimerous, hypogynous and pentacyclic. Calyx and corolla are undifferentiated and called perianth. Perianth 6, in two alternate whorls (3+3). Androecium 6, polyandrous, arranged in two whorls, antitepalous, often epitepalous. Gynoecium is tricarpellary, syncarpous, superior, ovary trilocular with axile placentation.
Study carefully the given floral diagram and select the option which correctly represents the related floral formula.
a
Identify the missing words (A, B, C and D) and select the correct option.
\(
\begin{array}{|c|c|c|c|c|}
\hline {\text { Family }} & \text { Inflorescence } & \text { Flower } & \begin{array}{c}
\text { Stamens } \\
\text { ltepals }
\end{array} & \text { Gynoecium } \\
\hline \text { Fabaceae } & {\text { A }} & \begin{array}{l}
\text { Zygo- } \\
\text { morphic }
\end{array} & 10 & \text { D } \\
\hline \text { Solanaceae } & \begin{array}{l}
\text { Solitary, axillary } \\
\text { or cymose }
\end{array} & \text { B } & 5 & \text { Bicarpellary } \\
\hline \text { Lilliaceae } & \begin{array}{l}
\text { Solitary, cymose } \\
\text { or racemose }
\end{array} & \begin{array}{l}
\text { Actino- } \\
\text { morphic }
\end{array} & \text { C } & \text { Tricarpellary } \\
\hline
\end{array}
\)
a
Which of the following is a correct combination of family and its respective members?
b
Select the pair which contains monocotyledonous families.
(c) Liliaceae (Lily family) and Poaceae (= Gramineae, grass family) are the two monocot families.
Roots are modified to perform specific functions other than their normal functions. The given figure shows modification of the roots of mangrove plant. Select the incorrect option regarding it.
(d) Red mangroves, which can survive in the most inundated areas, prop themselves above the water level with the help of stilt roots and can then absorb air (oxygen) through the lenticels present in the stilt roots. The given figure represents the stilt roots of Rhizophora species (e.g., R. mangle), commonly called red mangroves. Stilt roots arise from the stem or stem branches and grow towards the soil where they develop an underground root system. If the stilt roots hit water instead of soil, they grow underwater and develop a huge and extensive underwater root system where countless animals especially small fishes, sea horses, etc., find shelter.
Read the following statements.
(i) Dianthus and Primrose represent _____ placentation.
(ii) The ‘eyes’ of the potato tubers are _____.
(iii) In _____, ovary arises from the bottom of the cup-shaped thalamus and androperianth arises from the rim of the cup-shaped thalamus.
(iv) Underground stems can be differentiated from roots by _____ of axillary buds on the nodes.
Select the correct fill-ups out of the following for the above statements.
b
Refer to the given Venn diagram.
Identify plants where P, Q, R, S and T are found and select the correct option.
(b) In the given Venn diagram P, Q and T are roots whereas S and R could be plant parts other than roots that are modified to perform vivid functions.
In Tecoma (P) roots are modified to help the plant climbing up a support. Q could be Ipomoea where roots are modified to store food. R could be Amorphophallus where stems are modified to store food.
S could be stem or leaf modified to help plant climbing up support. So S could be Passiflora where stem tendrils are found. T could be Pandanus that possesses stilt roots that provide mechanical support.
In the given figure of maize grain certain regions are labelled as A, B, C and D. Match them with the codes (1, 2,3 and 4) given below and select the correct option.
(1) The main nutritive tissue
(2) Shield shaped cotyledon
(3) Protection sheath of radicle
(4) The proteinaceous layer
(d) In the given figure showing L.S. of maize grain, A, B, C and D represent aleurone layer, scutellum, coleorhiza and starchy endosperm respectively.
Which of the following features characterise the family represented by the given floral diagram?
(c) The given floral diagram belongs to Family Cruciferae (= Brassicaceae) which is characterised by cruciform corolla with valvate aestivation, stamens 6 with tetradynamous condition, bicarpellary, syncarpous, superior ovary with parietal placentation and racemose inflorescence.
How many of the given plants belong to Fabaceae, Solanaceae and Liliaceae families, respectively?
Trifolium, Colchicum, Lupin, Gloriosa, Cyamopsis, Datura, Atropa belladonna, Petunia, Indigofera, Tulip Sweet pea, Sesbania
(a) Trifolium, Cyamopsis, Indigofera, Sweet pea and Sesbania belong to Family Fabaceae. Datura, Atropa belladonna and Petunia belong to Family Solanaceae. Colchicum, Lupin, Gloriosa and Tulip belong to Family Liliaceae.
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