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Q. No.Given below are two statements:
Assertion (A):
In Bougainvillea, axillary buds of stems get modified to form thorns
Reason (R):
Thorns in Bougainvillea protect plants from browsing animals
1.
Both (A) and (R) are true and (R) is the correct explanation of (A).
2.
Both (A) and (R) are true but (R) is not the correct explanation of (A).
3.
(A) is true but (R) is false.
4.
Both (A) and (R) are false.
Subtopic: Modifications of Stem |
From NCERT
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Given below are two statements:
| Assertion (A): | Leaves showing parallel venation are found in monocotyledonous plants |
| Reason (R): | In leaves showing parallel venation, the veins run parallel to one another, veinlets are inconspicuous and reticulations are absent |
| 1. | Both (A) and (R) are true and (R) is the correct explanation of (A). |
| 2. | Both (A) and (R) are true but (R) is not the correct explanation of (A). |
| 3. | (A) is true but (R) is false. |
| 4. | Both (A) and (R) are false. |
Subtopic: Morphology of Leaf |
53%
From NCERT
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Given below are two statements:
| Assertion (A): | Maize is albuminous seed |
| Reason (R): | Endosperm in maize is completely absorbed by its growing embryo |
| 1. | Both (A) and (R) are true and (R) is the correct explanation of (A). |
| 2. | Both (A) and (R) are true but (R) is not the correct explanation of (A). |
| 3. | (A) is true but (R) is false. |
| 4. | Both (A) and (R) are false. |
Subtopic: Seed |
67%
From NCERT
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Given below are two statements:
| Assertion (A): | Presence of respiratory roots is a special adaptation of hydrophytes |
| Reason (R): | Respiratory roots are always positively geotropic and have lenticels that help in gaseous exchange |
| 1. | Both (A) and (R) are true and (R) is the correct explanation of (A). |
| 2. | Both (A) and (R) are true but (R) is not the correct explanation of (A). |
| 3. | (A) is true but (R) is false. |
| 4. | Both (A) and (R) are false. |
Subtopic: Modification of Roots |
From NCERT
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Two medicinal plants muliathi and ashwagandha are studied by a researcher. He observed that these plants belong to two different families. Identify the correct floral formula for the families
| Muliathi | Ashwagandha | |
| 1. |  |
 |
| 2. |  |
 |
| 3. |  |
 |
| 4. |  |
 |
Subtopic: Families of Flowering Plant |
83%
From NCERT
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Commonly, the plant product used to arrest cell division can be isolated from the family
1. Solanaceae
2. Fabaceae
3. Brassicaceae
4. Liliaceae
1. Solanaceae
2. Fabaceae
3. Brassicaceae
4. Liliaceae
Subtopic: Families of Flowering Plant |
69%
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A researcher studies a plant and observed the following features:
Tap root system, alternate phyllotaxy, actinomorphic flower, superior ovary, variation in the length of filaments of stamens, syncarpous ovary, parietal placentation
Which of the following plants is studied by the researcher?
1. Lupin
2. Aloe
3. Mustard
4. Gloriosa
Tap root system, alternate phyllotaxy, actinomorphic flower, superior ovary, variation in the length of filaments of stamens, syncarpous ovary, parietal placentation
Which of the following plants is studied by the researcher?
1. Lupin
2. Aloe
3. Mustard
4. Gloriosa
Subtopic: Families of Flowering Plant |
90%
From NCERT
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Tulip and Petunia are different from each other on which of the following basis?
1. Adhesion of stamens
2. Symmetry of flower
3. Occurrence of endosperm in seed
4. Type of placentation
1. Adhesion of stamens
2. Symmetry of flower
3. Occurrence of endosperm in seed
4. Type of placentation
Subtopic: Families of Flowering Plant |
55%
From NCERT
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Organ of perennation in potato is modified _____A______ and organ for food storage in sweet potato is modified _______B__________
Select the correct option to fill (A) and (B)
Select the correct option to fill (A) and (B)
| A | B | |
| 1. | Stem | Stem |
| 2. | Root | Root |
| 3. | Stem | Root |
| 4. | Root | Stem |
Subtopic: Modification of Roots | Modifications of Stem |
78%
From NCERT
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Leaves of guava can be differentiated from leaves of neem as the former is an example of
1. Pinnately compound leaf
2. Simple leaf
3. Palmately compound leaf
4. Leaflets present on rachis
1. Pinnately compound leaf
2. Simple leaf
3. Palmately compound leaf
4. Leaflets present on rachis
Subtopic: Venation, Types of Leaves & Phyllotaxy |
52%
From NCERT
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