“Plant Kingdom” MCQ with Answer Explanation : NEET 2025.

MCQ 71:
Which of the following plants is known for its ability to fix nitrogen?

A) Wheat
B) Clover
C) Corn
D) Potato

Answer: B) Clover

Explanation: Clover and other legumes have symbiotic relationships with nitrogen-fixing bacteria, allowing them to convert atmospheric nitrogen into a usable form.

MCQ 72:
Which plant part is primarily responsible for absorbing light energy?

A) Roots
B) Stems
C) Leaves
D) Flowers

Answer: C) Leaves

Explanation: Leaves contain chlorophyll, which absorbs light energy for photosynthesis.

MCQ 73:
Which group of plants includes both ferns and mosses?

A) Vascular plants
B) Non-vascular plants
C) Gymnosperms
D) Angiosperms

Answer: A) Vascular plants

Explanation: Both ferns (vascular) and mosses (non-vascular) are types of plants, but mosses are categorized as non-vascular.

MCQ 74:
What type of symmetry is characteristic of most flowers?

A) Asymmetrical
B) Radial symmetry
C) Bilateral symmetry
D) Both B and C

Answer: D) Both B and C

Explanation: Many flowers exhibit either radial symmetry (regular) or bilateral symmetry (irregular), depending on the species.

MCQ 75:
Which part of the flower develops into the seed coat?

A) Ovule
B) Anther
C) Stigma
D) Style

Answer: A) Ovule

Explanation: The ovule develops into the seed, and its outer layers form the seed coat after fertilization.

MCQ 76:
Which group of plants is primarily known for having vascular tissues?

A) Bryophytes
B) Pteridophytes
C) Angiosperms
D) Both B and C

Answer: D) Both B and C

Explanation: Both pteridophytes (ferns) and angiosperms have vascular tissues (xylem and phloem), while bryophytes do not.

MCQ 77:
Which hormone is involved in leaf abscission?

A) Auxin
B) Ethylene
C) Gibberellin
D) Cytokinin

Answer: B) Ethylene

Explanation: Ethylene is involved in the process of leaf abscission, promoting the shedding of leaves.

MCQ 78:
Which plant structure is primarily responsible for nutrient storage?

A) Leaves
B) Roots
C) Stems
D) Flowers

Answer: B) Roots

Explanation: Roots often store carbohydrates and nutrients for the plant, especially during dormancy.

MCQ 79:
Which of the following is a type of asexual reproduction in plants?

A) Pollination
B) Fragmentation
C) Fertilization
D) Germination

Answer: B) Fragmentation

Explanation: Fragmentation is a form of asexual reproduction where a new plant grows from a fragment of the parent plant.

MCQ 80:
Which part of the plant is responsible for the formation of new cells?

A) Meristem
B) Cortex
C) Xylem
D) Phloem

Answer: A) Meristem

Explanation: Meristematic tissues are regions in plants where new cells are formed, allowing for growth.