“Morphology of flowering plants” MCQ with Answer Explanation : NEET 2025.

MCQ 41
Which type of flower has both sepals and petals?

A) Incomplete flower
B) Complete flower
C) Perfect flower
D) Imperfect flower

Answer: B) Complete flower

Explanation: A complete flower has all four main floral parts: sepals, petals, stamens, and carpels.

MCQ 42
What type of growth do meristematic tissues allow in plants?

A) Lateral growth
B) Secondary growth
C) Primary growth
D) All types of growth

Answer: D) All types of growth

Explanation: Meristematic tissues enable both primary (lengthening) and secondary (thickening) growth in plants.

MCQ 43
What is the primary function of guard cells?

A) Photosynthesis
B) Water storage
C) Regulate gas exchange
D) Nutrient absorption

Answer: C) Regulate gas exchange

Explanation: Guard cells control the opening and closing of stomata, regulating gas exchange and water loss.

MCQ 44
What type of leaf modification is a tendril?

A) Photosynthetic
B) Reproductive
C) Climbing
D) Storage

Answer: C) Climbing

Explanation: Tendrils are modified leaves or stems that help plants climb and support themselves.

MCQ 45
Which type of root is primarily associated with waterlogged conditions?

A) Fibrous root
B) Taproot
C) Adventitious root
D) Pneumatophores

Answer: D) Pneumatophores

Explanation: Pneumatophores are specialized aerial roots that help plants obtain oxygen in waterlogged soils.

MCQ 46
Which flower part contains the pollen?

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

Answer: C) Anther

Explanation: The anther is the part of the stamen that produces and contains pollen grains.

MCQ 47
Which of the following fruits is considered a multiple fruit?

A) Banana
B) Grape
C) Apple
D) Peach

Answer: A) Banana

Explanation: A banana is a multiple fruit formed from the fusion of many flowers (an inflorescence).

MCQ 48
What is the term for the protective outer layer of a seed?

A) Seed coat
B) Endosperm
C) Cotyledon
D) Hilum

Answer: A) Seed coat

Explanation: The seed coat protects the seed from physical damage and prevents desiccation.

MCQ 49
Which part of the flower is responsible for fertilization?

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

Answer: A) Ovule

Explanation: The ovule undergoes fertilization after receiving pollen, eventually developing into a seed.

MCQ 50
What is the main purpose of leaf modifications such as spines?

A) Photosynthesis
B) Water storage
C) Protection
D) Reproduction

Answer: C) Protection

Explanation: Spines are modified leaves that provide protection against herbivores.