MCQ 91
Which plant organ is responsible for photosynthesis?
A) Roots
B) Leaves
C) Stems
D) Flowers
Answer: B) Leaves
Explanation: Leaves contain chlorophyll and are the main sites for photosynthesis in plants.
MCQ 92
Which part of the flower develops into a seed?
A) Ovary
B) Stamen
C) Anther
D) Petal
Answer: A) Ovary
Explanation: The ovary contains ovules, which develop into seeds after fertilization.
MCQ 93
What is the main function of xylem in plants?
A) Transport nutrients
B) Transport water
C) Support the plant
D) Store energy
Answer: B) Transport water
Explanation: Xylem’s primary function is to transport water and minerals from the roots to the rest of the plant.
MCQ 94
Which part of the flower is typically the most colorful?
A) Sepal
B) Petal
C) Stamen
D) Carpel
Answer: B) Petal
Explanation: Petals are often brightly colored to attract pollinators and aid in reproduction.
MCQ 95
Which of the following is a feature of monocots?
A) Broad leaves
B) Two cotyledons
C) Parallel venation
D) Reticulate venation
Answer: C) Parallel venation
Explanation: Monocots typically exhibit parallel venation in their leaves, while dicots usually have reticulate venation.
MCQ 96
Which part of the flower is responsible for producing pollen?
A) Stigma
B) Style
C) Anther
D) Ovary
Answer: C) Anther
Explanation: The anther is the part of the stamen that produces pollen, containing the male gametes.
MCQ 97
What is the term for the outer protective covering of a flower bud?
A) Petal
B) Sepal
C) Bract
D) Receptacle
Answer: B) Sepal
Explanation: The sepal protects the flower bud before it blooms, often forming the outermost whorl of the flower.
MCQ 98
Which plant part stores food for the plant?
A) Leaves
B) Roots
C) Stems
D) Flowers
Answer: B) Roots
Explanation: Roots store food and nutrients, particularly in storage roots like carrots and beets.
MCQ 99
What type of fruit is formed from a single ovary of a flower?
A) Aggregate
B) Multiple
C) Simple
D) Accessory
Answer: C) Simple
Explanation: Simple fruits develop from a single ovary of a single flower, such as cherries and peaches.
MCQ 100
What structure in plants is responsible for nutrient transport?
A) Xylem
B) Phloem
C) Stomata
D) Cuticle
Answer: B) Phloem
Explanation: Phloem is the tissue responsible for transporting nutrients and sugars throughout the plant.
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