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Q. No.The negatively geotropic roots produced by Rhizophora are called:
| 1. | Pneumatophores | 2. | Prop roots |
| 3. | Stilt roots | 4. | Storage roots |
Subtopic: Â Modification of Roots |
 90%
Level 1: 80%+
NEET - 2024
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Identify the correct set of statements:
| (a) | The leaflets are modified into pointed hard thorns in Citrus and Bougainvillea. |
| (b) | Axillary buds form slender and spirally coiled tendrils in cucumber and pumpkin. |
| (c) | Stem is flattened and fleshy in Opuntia and modified to perform the function of leaves. |
| (d) | Rhizophora shows vertically upward growing roots that help to get oxygen for respiration. |
| (e) | Subaerially growing stems in grasses and strawberry help in vegetative propagation. |
Choose the correct answer from the options given below:
1. (a), (b), (d), and (e) only
2. (b), (c) only
3. (a), (d) only
4. (b), (c), (d) and (e) only
Subtopic: Â Modifications of Stem |
 65%
Level 2: 60%+
NEET - 2022
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The roots that originate from the base of the stem are:
| 1. | Primary roots | 2. | Prop roots |
| 3. | Lateral roots | 4. | Fibrous roots |
Subtopic: Â Morphology of Roots |
 68%
Level 2: 60%+
NEET - 2020
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Subtopic: Â Modification of Roots |
 76%
Level 2: 60%+
NEET - 2018
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Root hairs develop from the region of:
| 1. | Elongation | 2. | Root cap |
| 3. | Meristematic activity | 4. | Maturation |
Subtopic: Â Morphology of Roots |
 81%
Level 1: 80%+
NEET - 2017
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In Bougainvillea thorns are the modifications of:
1. Adventitious root
2. Stem
3. Leaf
4. Stipules
Subtopic: Â Aerial Stem Modification |
 74%
Level 2: 60%+
NEET - 2017
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Which of the following is not a stem modification?
| 1. | Thorns of citrus |
| 2. | Tendrils of cucumber |
| 3. | Flattened structure of Opuntia |
| 4. | Pitcher of Nepenthes |
Subtopic: Â Morphology of Stems |Â Modifications of Stem |
 82%
Level 1: 80%+
NEET - 2016
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Subtopic: Â Morphology of Stems |
 72%
Level 2: 60%+
AIPMT - 2014
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Choose the mismatched pair of leaf character with its example:
1. Palmately compound - Alstonia
2. Alternate Phyllotaxy - China-rose
3. Leaf tendril - Pea
4. Opposite phyllotaxy - Calotropis
Subtopic: Â Venation, Types of Leaves & Phyllotaxy |Â Modification of Leaf |
 75%
Level 2: 60%+
NEET - 2022
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Which of the following shows whorled phyllotaxy?
| 1. | Mustard | 2. | China rose |
| 3. | Alstonia | 4. | Calotropis |
Subtopic: Â Venation, Types of Leaves & Phyllotaxy |
 91%
Level 1: 80%+
NEET - 2019
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