MCQ 51
What type of venation is commonly seen in monocot leaves?
A) Reticulate
B) Pinnate
C) Palmate
D) Parallel
Answer: D) Parallel
Explanation: Monocot leaves typically have parallel venation, where veins run parallel to each other.
MCQ 52
Which of the following plant parts is responsible for the production of fruit?
A) Leaf
B) Flower
C) Stem
D) Root
Answer: B) Flower
Explanation: The flower is the reproductive structure that, after fertilization, develops into fruit.
MCQ 53
What type of growth results from the activity of lateral meristems?
A) Primary growth
B) Secondary growth
C) Both primary and secondary growth
D) No growth
Answer: B) Secondary growth
Explanation: Lateral meristems, like the vascular cambium, are responsible for secondary growth, increasing the thickness of stems and roots.
MCQ 54
What is the function of the cuticle on leaves?
A) Photosynthesis
B) Water retention
C) Gas exchange
D) Nutrient absorption
Answer: B) Water retention
Explanation: The cuticle is a waxy layer that helps prevent water loss from leaves.
MCQ 55
Which structure is responsible for the dispersal of seeds?
A) Fruit
B) Leaf
C) Root
D) Stem
Answer: A) Fruit
Explanation: Fruits often aid in the dispersal of seeds through various mechanisms, such as wind, water, or animals.
MCQ 56
Which type of flower is characterized by having either male or female reproductive organs but not both?
A) Perfect flower
B) Complete flower
C) Imperfect flower
D) Bisexual flower
Answer: C) Imperfect flower
Explanation: An imperfect flower has either male (staminate) or female (pistillate) reproductive organs, but not both.
MCQ 57
What is the primary role of root hairs?
A) Nutrient storage
B) Photosynthesis
C) Water absorption
D) Gas exchange
Answer: C) Water absorption
Explanation: Root hairs increase the surface area of roots, enhancing the plant’s ability to absorb water and nutrients.
MCQ 58
Which of the following plant parts is responsible for the production of seeds?
A) Stamen
B) Petal
C) Carpel
D) Sepal
Answer: C) Carpel
Explanation: The carpel contains the ovary, which produces ovules that develop into seeds after fertilization.
MCQ 59
What type of flower arrangement has flowers clustered at the top of a stem?
A) Spike
B) Panicle
C) Raceme
D) Umbel
Answer: D) Umbel
Explanation: In an umbel, flowers are arranged on short stalks that radiate from a common point at the top of the stem.
MCQ 60
What part of the plant is primarily responsible for structural support?
A) Leaves
B) Roots
C) Stems
D) Flowers
Answer: C) Stems
Explanation: Stems provide structural support for the plant, allowing it to grow upright and hold leaves and flowers.
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