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Q. No.Consider the two statements:
| Assertion (A): | Prop and stilt roots are aerial in origin yet they are called roots. |
| Reason (R): | These roots are modified to provide mechanical support |
| 1. | Both (A) and (R) are True but (R) does not correctly explain the (A). |
| 2. | (A) is True but (R) is False. |
| 3. | Both (A) and (R) are True and (R) correctly explains the (A). |
| 4. | (A) is False but (R) is True. |
Subtopic: Â Modification of Roots |
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Although a root system performs many functions, a fibrous root system may especially be excellent for:
| 1. | storage of food |
| 2. | absorbing water from the deeper layers of soil |
| 3. | nitrogen fixation |
| 4. | providing good anchorage to the plant |
Subtopic: Â Morphology of Roots |
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Identify the correct statement(s) regarding the modifications seen in stems:
| I: | Stem tendrils develop from axillary buds and help plants, such as pea, to climb |
| II: | Opuntia modifies its stems into flattened structures to protect itself from browsing animals |
| III: | Underground stems of some plants such as grass and strawberry spread to new niches and when older plants die, new plants are formed. |
| 1. | I, II, and III |
| 2. | Only II and III |
| 3. | Only III |
| 4. | Only I and III |
Subtopic: Â Modifications of Stem |
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Phylloclade:
1. Only I and II are correct
2. Only I and III are correct
3. Only II and III are correct
4. I, II, and III are correct
| I: | is a stem modification to facilitate photosynthesis. |
| II: | a flattened/cylindrical stem or branches of unlimited growth. |
| III: | is seen in Cactus. |
2. Only I and III are correct
3. Only II and III are correct
4. I, II, and III are correct
Subtopic: Â Modifications of Stem |
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Which of the following statement is not correct?
| 1. | Rhizome is a condensed form of stem. |
| 2. | The apical bud in rhizome always remains above the ground. |
| 3. | The rhizome is aerial with no distinct nodes and internodes. |
| 4. | The rhizome is thick, prostrate and branched. |
Subtopic: Â Modifications of Stem |
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NEET - 2022
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NEET 2026 - Target Batch - Vital
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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: Â Morphology of Leaf |
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From NCERT
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In legumes, the pulvinus:
| 1. | enables rapid leaf movement in response to touch (thigmonasty) |
| 2. | assists in water conservation by folding the leaves during drought |
| 3. | helps protect the plant by producing toxic compounds |
| 4. | promotes gas exchange by moving the leaves away from each other |
Subtopic: Â Modification of Leaf |
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Identify the incorrect statement about racemose inflorescence:
| 1. | The main axis continues to grow. |
| 2. | Flowers are borne acropetally on the axis. |
| 3. | It is a type of compound inflorescence. |
| 4. | The youngest flower is at the apex. |
Subtopic: Â Inflorescence |
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From NCERT
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Consider the given two statements:
| Assertion(A): | In cymose type of inflorescence, the main axis is limited in growth. |
| Reason (R): | In cymose type of inflorescence, the flowers are borne in a basipetal order. |
| 1. | Both (A) and (R) are True and (R) correctly explains (A). |
| 2. | Both (A) and (R) are True but (R) does not correctly explain (A). |
| 3. | (A) is True; (R) is False |
| 4. | Both (A) and (R) are False |
Subtopic: Â Inflorescence |
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From NCERT
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Identify the incorrectly matched pair:
| 1. | Having the sepals united | Gamosepalous |
| 2. | Sterile stamen | Staminate |
| 3. | Stamens attached to perianth | Epiphyllous |
| 4. | Having the carpels of the gynoecium united in a compound ovary | Syncarpous |
Subtopic: Â Flower & Parts of Flower |
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