Assertion and Reasoning
Directions: In the following questions, a statement of assertion is followed by a statement of reason. Mark the correct choice as :
(a) If both assertion and reason are true and reason is the correct explanation of assertion.
(b) If both assertion and reason are true but reason is not the correct explanation of assertion.
(c) If assertion is true but reason is false.
(d) If assertion is false but reason is true.
Quiz Summary
0 of 14 Questions completed
Questions:
Information
You have already completed the quiz before. Hence you can not start it again.
Quiz is loading…
You must sign in or sign up to start the quiz.
You must first complete the following:
Results
Results
0 of 14 Questions answered correctly
Your time:
Time has elapsed
You have reached 0 of 0 point(s), (0)
Earned Point(s): 0 of 0, (0)
0 Essay(s) Pending (Possible Point(s): 0)
Categories
- Not categorized 0%
- 1
- 2
- 3
- 4
- 5
- 6
- 7
- 8
- 9
- 10
- 11
- 12
- 13
- 14
- Current
- Review
- Answered
- Correct
- Incorrect
-
Question 1 of 14
1. Question
Assertion: Fibrous root system consists of large number of fine, fibrous roots developing from the base of the stem.
Reason: Fibrous root system is found in dicots only.CorrectIncorrectHint
(c) Fibrous root system is mainly found in monocots such as wheat and barley.
-
Question 2 of 14
2. Question
Assertion: Stems of some plants protect them from browsing animals.
Reason: Axillary buds of stems of these plants are modified into thorns.CorrectIncorrectHint
(a) Stems are modified to perform different functions like storage, protection, mechanical support and photosynthesis etc. Axillary buds of stems may also get modified into woody, straight and pointed thorns. Thorns are found in many plants such as Citrus, Bougainvillea, etc. They protect plants from browsing animals and also reduce transpiration.
-
Question 3 of 14
3. Question
Assertion: In some leguminous plants, the leaf base is swollen.
Reason: The swollen leaf base is called pulvinus.CorrectIncorrectHint
b
-
Question 4 of 14
4. Question
Assertion: Leaves of monocot plants generally possess reticulate venation.
Reason: Leaves of banana possess parallel venation.
CorrectIncorrectHint
(d) Leaves of dicotyledonous plants generally possess reticulate venation, e.g. peepal, castor, etc. while parallel venation is the characteristic feature of most monocotyledons, e.g., banana, grass, etc.
-
Question 5 of 14
5. Question
Assertion: The alternate type of phyllotaxy is the arrangement of leaves in which a single leaf arises at each node in alternate manner.
Reason: The alternate type of phyllotaxy is seen in China rose and mustard plant.
CorrectIncorrectHint
b
-
Question 6 of 14
6. Question
Assertion: The cymose type of inflorescence has limited growth.
Reason: In cymose inflorescence the main axis terminates in a flower.
CorrectIncorrectHint
(a) Cymose inflorescence is the name of determinate or definite inflorescence in which the tip of the main axis terminates in a flower and further growth continues by one or more lateral branches which also behave like the main axis. The arrangement of flowers is either basipetal or centrifugal.
-
Question 7 of 14
7. Question
Assertion: In some flowers like lily, perianth is a term used when calyx and corolla are not distinct.
Reason: Calyx and corolla are the reproductive organs.
CorrectIncorrectHint
(c) Sepals or calyx and petals or corolla are nonessential or accessory floral organs or floral leaves which do not take any direct part in sexual reproduction.
-
Question 8 of 14
8. Question
Assertion: In imbricate aestivation, out of five petals, one is completely internal, one is completely external and in each of the remaining three petals, one margin is internal and the other is external.
Reason: Ascending imbricate aestivation is found in Cassia and gulmohur.
CorrectIncorrectHint
b
-
Question 9 of 14
9. Question
Assertion: Monoadelphous stamens are found in pea.
Reason: Monoadelphous stamens are united into one bunch or one bundle.CorrectIncorrectHint
(d) In pea, stamens are united into two bundles, i.e., diadelphous condition.
-
Question 10 of 14
10. Question
Assertion: The placentation in which the placenta forms a ridge along the ventral suture of ovary and ovules are borne on this ridge forming two rows is called parietal placentation.
Reason: The marginal placentation has unilocular ovary.
CorrectIncorrectHint
(d) In marginal placentation, one or two alternate rows of the ovules occur longitudinally along the ridge in the wall of the ovary in the area of fusion of its two margins or ventral suture. In parietal placentation two or more longitudinal placentae develop along the wall of a syncarpous or compound pistil.
-
Question 11 of 14
11. Question
Assertion: Fruit is the mature or ripened ovary developed after fertilisation.
Reason: Fruit formed without fertilisation of the ovary is called parthenocarpic fruit.
CorrectIncorrectHint
b
-
Question 12 of 14
12. Question
Assertion: The outermost covering of a dicotyledonous seed is the seed coat.
Reason: The seed coat has two layers-outer testa and inner hilum.
CorrectIncorrectHint
(c) A seed may have one or two coverings called seed coats. The outer or the only seed coat (if one is present) is called testa while the inner one is named as tegmen.
-
Question 13 of 14
13. Question
Assertion: \(\underline{G}\) is the symbol for inferior ovary.
Reason: Fusion is indicated by enclosing the figure within bracket.CorrectIncorrectHint
(d) G is the symbol for superior ovary. Fusion is indicated by enclosing the figure within bracket and adhesion by a line drawn above the symbols of the floral parts.
-
Question 14 of 14
14. Question
Assertion : The floral formula of Family Solanaceae is
Reason: This floral formula of Solanaceae tells that flower is bisexual, sepals five, petals five, stamens five and gynoecium tricarpellary, trilocular with many ovules.
CorrectIncorrectHint
(c) The given floral formula tells that flower is bisexual, actinomorphic, sepals are five and united, petals are five and united, stamens are five, epipetalous and gynoecium is bicarpellary, syncarpous and superior ovary.