MCQ 81
Which part of the flower contains the male gametes?
A) Stigma
B) Ovary
C) Anther
D) Style
Answer: C) Anther
Explanation: The anther produces and contains pollen grains, which carry the male gametes.
MCQ 82
What type of leaf arrangement has three or more leaves growing from a single node?
A) Alternate
B) Opposite
C) Whorled
D) Rosette
Answer: C) Whorled
Explanation: In a whorled arrangement, three or more leaves grow from a single node on the stem.
MCQ 83
Which type of inflorescence has flowers clustered at the end of the stem?
A) Spike
B) Umbel
C) Head
D) Raceme
Answer: B) Umbel
Explanation: In an umbel, flowers are arranged on short stems that arise from a common point at the end of the stem.
MCQ 84
Which of the following plant structures is responsible for gas exchange?
A) Stomata
B) Roots
C) Leaves
D) Flowers
Answer: A) Stomata
Explanation: Stomata are small openings on leaves that allow for the exchange of gases, including oxygen and carbon dioxide.
MCQ 85
What type of fruit is formed from the fusion of many ovaries from a single flower?
A) Simple
B) Aggregate
C) Multiple
D) Accessory
Answer: B) Aggregate
Explanation: Aggregate fruits are formed from multiple ovaries of a single flower, like raspberries and blackberries.
MCQ 86
What part of the seed provides energy to the developing embryo?
A) Seed coat
B) Cotyledon
C) Endosperm
D) Hilum
Answer: C) Endosperm
Explanation: The endosperm provides the necessary nutrients and energy for the developing embryo in the seed.
MCQ 87
Which type of leaf venation is typically found in dicots?
A) Parallel
B) Reticulate
C) Circular
D) Straight
Answer: B) Reticulate
Explanation: Dicot leaves usually exhibit reticulate venation, where veins form a network.
MCQ 88
What structure protects the developing flower bud?
A) Petal
B) Sepal
C) Stamen
D) Carpel
Answer: B) Sepal
Explanation: Sepals protect the developing flower bud before it opens, often forming the outermost part of the flower.
MCQ 89
What type of root is a carrot?
A) Fibrous
B) Taproot
C) Adventitious
D) Aerial
Answer: B) Taproot
Explanation: A carrot is a taproot, which is a type of root that grows deep into the soil for stability and nutrient storage.
MCQ 90
What is the primary role of petals in flowers?
A) Protection
B) Attraction
C) Support
D) Nutrient storage
Answer: B) Attraction
Explanation: Petals are primarily responsible for attracting pollinators with their color and fragrance.
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