51. Which part of the plant is primarily responsible for photosynthesis in the flower?
A) Petals
B) Leaves
C) Stamen
D) Ovary
Answer: B) Leaves
52. What is the main advantage of cross-pollination?
A) It requires less energy
B) It increases genetic diversity
C) It guarantees seed production
D) It occurs more frequently
Answer: B) It increases genetic diversity
53. Which type of pollination is most common in grasses?
A) Entomophily
B) Anemophily
C) Hydrophily
D) Ornithophily
Answer: B) Anemophily
54. What type of cells form the pollen grain?
A) Spore cells
B) Gametophyte cells
C) Seed cells
D) Endosperm cells
Answer: B) Gametophyte cells
55. What is the purpose of the filament in a flower?
A) To support the ovary
B) To attract pollinators
C) To connect the anther to the flower
D) To produce nectar
Answer: C) To connect the anther to the flower
56. Which type of flower is missing either stamens or carpels?
A) Perfect flower
B) Complete flower
C) Imperfect flower
D) Simple flower
Answer: C) Imperfect flower
57. What does the term “angiosperm” refer to?
A) Non-flowering plants
B) Flowering plants that produce seeds
C) Plants that reproduce asexually
D) Plants with spores
Answer: B) Flowering plants that produce seeds
58. Which part of the plant often provides nourishment to the developing embryo?
A) Seed coat
B) Endosperm
C) Ovary
D) Cotyledon
Answer: B) Endosperm
59. What structure is responsible for producing ovules in the flower?
A) Stamen
B) Carpel
C) Petal
D) Sepal
Answer: B) Carpel
60. Which of the following is a characteristic of self-pollination?
A) Increases genetic diversity
B) Occurs in perfect flowers
C) Requires external pollinators
D) Results in hybrid seeds
Answer: B) Occurs in perfect flowers
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