NEET Biology: Plant Morphology questions with solutions

Q1. Assertion Gemmae formation in Funaria occurs in favourable condition Reason The gemmed form on the stern and leaves

1. If both the assertion and the reason are true and the reason is a correct explanation of the assertion
2. If both the assertion and reason are true but the reason is not a correct explanation of the assertion
3. If the assertion is true but the reason is false
4. If both the assertion and reason are false

Answer: If both the assertion and reason are true but the reason is not a correct explanation of the assertion

Gemmae formation in Funaria does occur under favourable conditions, so the assertion is true. The reason is also true because gemmae are small vegetative buds formed on the stem and leaves, but this does not explain why they form in favourable conditions.

Q2. Which of these is an example for zygomorphic flower with imbricate aestivation?

1. Calotropis
2. Mustard
3. canna
4. cassia E. Cucumber

Answer: Calotropis

Calotropis has a zygomorphic flower, and its corolla shows imbricate aestivation. Mustard is actinomorphic with cruciform petals, Canna is asymmetric, and Cassia typically has zygomorphic flowers but not the classic imbricate example here.

Q3. In Opuntia, the function of photosynthesis is carried out by

1. cladode
2. phyllode
3. phyllociade
4. stipules

Answer: cladode

In Opuntia, the leaves are modified into spines to reduce water loss, so photosynthesis is performed by the green, flattened stem called a cladode. This stem contains chlorophyll and takes over the leaf’s role.

Q4. Identify the given figures \( A, B, C, D \) and E. \( E \)

1. A: Marginal, B: Axile, C: Free central, D: Parietal, E: Basal
2. A: Marginal, B: Parietal, C: Free central, D: Axile, E: Basal
3. A: Marginal, B: Axile, C: Parietal, D: Free central, E: Basal
4. A: Marginal, B: Axile, C: Parietal, D: Basal, E: Free central

Answer: A: Marginal, B: Parietal, C: Free central, D: Axile, E: Basal

The figures correspond to standard placentation types. Marginal has ovules along one margin, parietal along the inner wall, free central on a central column without septa, axile on a central axis in a multilocular ovary, and basal at the base of the ovary.

Q5. A sessile plant is a plant

1. Which has modified leaves
2. Which has petioles
3. Which does not possess petioles
4. Which cannot synthesise its own food

Answer: Which does not possess petioles

A sessile plant has leaves that are attached directly to the stem, so they lack petioles. The correct choice is the one describing absence of petioles.