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What type of vascular bundles are A, B and C?
(a)
Consider the following two statements:
Statement I: ‘Tissue’ is a level of biological organization between cells and a complete organ.
Statement II: A tissue is a group of cells having a common origin and usually performing a common function.
(b)
Root hairs are:
(b)
All the following are true for trichomes except:
(a)
NCERT: The trichomes in the shoot system are usually multicellular
TS. of dicot stem is given below, certain parts have been indicated by alphabets. Choose the answer in which these
alphabets have been correctly matched with the parts which they indicate:
(c)
Cuticle:
(c)
During the formation of primary plant body, dermal tissue, ground tissue and vascular tissue are produced by:
(a)
Regarding the epidermal tissue system of angiosperms:
I. Cuticle is absent in roots
II. Guard cells are dumb-bell shaped in grasses and possess chloroplasts
III. Root hairs are multicellular and the stem hairs are unicellular
(b)
❌ Incorrect
TS of dicot root is given below, certain parts have been indicated by alphabets, choose the answer in which these alphabets have been correctly matched with the parts which they indicate.
(d)
The incorrect statement regarding epidermal tissue system in angiosperms would be:
(a)
❌ Incorrect
:- The epidermal tissue system includes:
Mesophyll cells present in the ground tissue of leaves are:
(c)
In a dicot stem, the pericycle is present on the inner side of the endodermis and:
(a)
In a dicot root, initiation of lateral roots and vascular cambium during the secondary growth takes place in the cells of:
(d)
In a dicot stem the term ‘starch sheath‘ is used for:
(c)
The given diagram represents stomatal apparatus in dicots and monocots. Identify A, B and C:
(a)
All the following statements regarding the anatomy of a typical dicotyledonous root are correct except:
(c)
III. INCORRECT
NCERT :-Next to endodermis lies a few layers
of thick-walled parenchyomatous cells
referred to as pericycle.
The vascular bundles in a dicot stem are:
(a)
Casparian strips are:
(c)
In a dicot root, the number of patches of xylem and phloem are usually:
(a)
The term ‘stele’ in a dicot root does not include:
(a)
NCERT: All tissues
on the innerside of the endodermis such
as pericycle, vascular bundles and pith
constitute the stele
Refer to the given diagram showing a cross section of leaf:
Which of the following statements are not correct regarding this?
I. It is an isobilateral leaf.
II. The leaf shows reticulate venation.
III. The leaf may exhibit kranz anatomy.
IV. Such type of leaf may be present in plants undergoing \( C_4 \) pathway.
V. Mesophyll is differentiated into palisade and spongy parenchyma.
VI. Such type of leaf is found in hydrophytes.
VII. Such type of leaf is found in members of Family Poaceae.
(c)
TS. of Dicot leaf
Monocot root anatomy is different from the anatomy of dicot root in all the following aspects except:
(d)
❌ Incorrect — this is the exception
The hypodermis of a dicotyledonous stem:
(b)
Which of the following is a feature of the anatomy of a monocot stem?
I. Collenchymatous hypodermis
II. Scattered vascular bundles
(b)
I:- The monocot stem has a sclerenchymatous hypodermis.
Identify the incorrect matching with respect to anatomy of dicot and monocot leaves?
\(
\begin{array}{|l|l|l|l|}
\hline & \text { Character } & \text { Dicot[Dorsiventral] } & \begin{array}{l}
\text { Monocot } \\
\text { [Isobilateral] }
\end{array} \\
\hline \text { 1. } & \begin{array}{l}
\text { Presence } \\
\text { of stomata }
\end{array} & \begin{array}{l}
\text { More on adaxial } \\
\text { epidermis }
\end{array} & \begin{array}{l}
\text { More on abaxial } \\
\text { epidermis }
\end{array} \\
\hline \text { 2. } & \text { Mesophyll } & \begin{array}{l}
\text { Differentiated into } \\
\text { palisade and spongy } \\
\text { parenchyma }
\end{array} & \begin{array}{l}
\text { Not differentiated into } \\
\text { palisade and spongy } \\
\text { parenchyma }
\end{array} \\
\hline \text { 3. } & \text { Venation } & \text { Mostly reticulate } & \text { Mostly parallel } \\
\hline \text { 4. } & \begin{array}{l}
\text { Size of } \\
\text { vascular } \\
\text { bundle }
\end{array} & \begin{array}{l}
\text { Dependent on the } \\
\text { size of veins }
\end{array} & \begin{array}{l}
\text { Near similar size } \\
\text { except in main veins }
\end{array} \\
\hline
\end{array}
\)
(a)
In dicot
NCERT:- The abaxial epidermis generally
bears more stomata than the adaxial
epidermis.
In monocot : In an
isobilateral leaf, the stomata are present on both the surfaces of the
epidermis;
What is true regarding bulliform cells seen in grasses?
(a)
Identify the correct option regarding this Transverse section as shown in diagram:-
(d)
T.S of Monocot Leaf
While looking at a T.S. of a certain plant part you are convinced that it must be a monocot stem. Which of the following, if seen in the T.S. will give you confidence for your conclusion?
(d)
This feature is essentially restricted to monocot stems
The parallel venation in monocot leaves is reflected in the:
(d)
Identify the incorrect statement regarding the anatomy of flowering plants:
(d)
❌ Incorrect
Regarding the guard cells:
(a)
As compared to a dicot root, a monocot root has:
(b)
Cortex is the region found between
(b)
Grass leaves curl inwards during very dry weather.
Select the most appropriate reason from the following :
(c)
Which of the following statements is false?
I. Epidermal cell has small amount of cytoplasm and a large vacuole.
II. Waxy layer cuticle is absent in roots.
III. Root hairs are unicellular, while stem hairs / trichomes are multicellular.
IV. Trichomes – branched /unbranched, soft /stiff and secretory or transpiration preventive.
V. Guard cells are dumbell-shaped in dicots, and bean-shaped in monocots (e.g. grass).
(d)
V. ❌ False
This is reversed:
Identify T.S of this diagram ; Correct Identity is denoted by A and then identify other B to G ?
(c)
The stomatal apparatus includes
(d)
Which one is correct about bulliform / motor cell?
(d)
Select the characters which are not applicable to the anatomy of dicot roots?
A. Conjunctive tissue present.
B. Presence of protein compounds in the casparian strips.
C. Polyarch xylem bundles.
D. Presence of pericycle.
(d)
The characteristics not applicable to the anatomy of dicot roots are:
(B) Presence of protein compounds in the Casparian strips.
Casparian strips are composed primarily of suberin and lignin, not proteins
(C) Polyarch xylem bundles.
Dicot roots typically have diarch to tetrarch xylem arrangement. Polyarch xylem (having many xylem poles) is characteristic of monocot roots
Select the incorrect statement w.r.t. endodermis?
(c)
In monocot stems, the hypodermis (just beneath the epidermis) is sclerenchymatous, not the endodermis
Given two statements are Assertion (A) and Reason (R). In the light of given statements select the correct option.
Assertion (A) : Monocot stems do not show secondary growth
Reason (R) : Vascular bundles in monocot stem are closed.
(b)
Which of the transverse sections of a plant part given as options shows the following anatomical features?
(a) Endodermis is comprised of a single layer of barrel-shaped cells without any intercellular spaces.
(b) Small or inconspicuous pith.
(c) Radial vascular bundles
(d) Two to four xylem bundles
(a)
In a monocot stem:
(a)
These three types of vascular bundles (A, B and C) are present in:-
(c)
Cambium is for further secondary growth and in Monocots secondary growth does not take place
The ring arrangement of vascular bundles is a characteristic feature of:
(b)
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