MCQ 61:
What part of the plant contains the reproductive organs?
A) Leaf
B) Stem
C) Flower
D) Root
Answer: C) Flower
Explanation: Flowers contain the reproductive organs of flowering plants, including the stamen and pistil.
MCQ 62:
Which type of plant is adapted to live in wet environments?
A) Xerophytes
B) Mesophytes
C) Hydrophytes
D) Halophytes
Answer: C) Hydrophytes
Explanation: Hydrophytes are specially adapted to thrive in aquatic or very moist environments.
MCQ 63:
Which structure in plants is primarily responsible for anchoring the plant to the soil?
A) Stem
B) Roots
C) Leaves
D) Flowers
Answer: B) Roots
Explanation: Roots anchor the plant in the soil and provide stability.
MCQ 64:
What is the term for the process by which plants lose water vapor?
A) Photosynthesis
B) Respiration
C) Transpiration
D) Germination
Answer: C) Transpiration
Explanation: Transpiration is the process through which water vapor is released from plant leaves into the atmosphere.
MCQ 65:
Which of the following is a characteristic of monocots?
A) Two cotyledons
B) Floral parts in multiples of four or five
C) Vascular bundles in a ring
D) Parallel leaf venation
Answer: D) Parallel leaf venation
Explanation: Monocots have leaves with parallel venation, while dicots have reticulate venation and typically two cotyledons.
MCQ 66:
Which plant structure is responsible for producing gametes?
A) Flower
B) Leaf
C) Root
D) Stem
Answer: A) Flower
Explanation: Flowers are the reproductive structures that produce gametes (pollen and ovules).
MCQ 67:
Which of the following is a function of plant stems?
A) Water absorption
B) Nutrient storage
C) Support for leaves and flowers
D) Photosynthesis
Answer: C) Support for leaves and flowers
Explanation: Stems provide support for leaves and flowers and transport water and nutrients between roots and leaves.
MCQ 68:
Which hormone promotes cell division in plants?
A) Auxin
B) Gibberellin
C) Ethylene
D) Cytokinin
Answer: D) Cytokinin
Explanation: Cytokinins promote cell division and growth, playing a crucial role in various plant developmental processes.
MCQ 69:
Which of the following is a non-flowering plant?
A) Orchid
B) Rose
C) Pine tree
D) Sunflower
Answer: C) Pine tree
Explanation: Pine trees are gymnosperms and do not produce flowers, while orchids, roses, and sunflowers are flowering plants (angiosperms).
MCQ 70:
What type of fruit is formed from a cluster of flowers?
A) Simple fruit
B) Aggregate fruit
C) Multiple fruit
D) Accessory fruit
Answer: C) Multiple fruit
Explanation: Multiple fruits develop from a cluster of flowers, such as pineapples and figs.
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