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Q. No.Given below are two statements:
Assertion (A):
Presence of pneumatophores are morphological adaptive strategies of marshy plants
Reason (R):
Pneumatophores are modified adventitious roots for 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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Given below are two statements:
| Assertion (A): | In hypogynous condition, ovary is superior |
| Reason (R): | In hypogynous conditions, all other floral whorls are borne below the level of ovary |
| 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: Flower & Parts of Flower |
85%
From NCERT
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Given below are two statements:
| Assertion (A): | Rhizome of ginger has nodes and internodes |
| Reason (R): | Rhizome of ginger is an underground modified stem |
| 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 |
66%
From NCERT
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Given below are two statements:
| Assertion (A): | The large shield-shaped cotyledon in maize is called scutellum |
| Reason (R): | The outermost layer of scutellum is secretory and absorptive in function |
| 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 |
56%
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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 |
54%
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 |
70%
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