NEET Biology: Sexual Reproduction in Flowering Plants — Practice Set 10 (10 MCQs)

NEET Biology: Sexual Reproduction in Flowering Plants — Practice Set 10

Q1. Which of the following structures secretes chemical attractants (LURE peptides) to guide the pollen tube in the embryo sac?

A. Self-pollination increases homozygosity and reduces genetic diversity among offspring.
B. Self-pollination results in high genetic variability among offspring.
C. Self-pollination always leads to hybrid vigor.
D. Self-pollination is solely determined by environmental factors.

A. Double fertilization involves the fusion of two sperm cells with two egg cells.
B. Double fertilization results in the formation of a zygote and a triploid endosperm.
C. Double fertilization occurs in both angiosperms and gymnosperms.
D. Double fertilization produces two embryos in one ovule.

A. Self-pollination can lead to inbreeding depression and reduced genetic diversity among offspring.
B. Self-pollination increases genetic variation.
C. Self-pollination always results in more vigorous offspring than cross-pollination.
D. Self-pollination eliminates the risk of inbreeding depression.

A. The filament supports the anther, ensuring its optimal position for pollen release.
B. The filament produces pollen grains.
C. The filament develops into the fruit after fertilization.
D. The filament secretes nectar to attract pollinators.

Biology — Sexual Reproduction in Flowering Plants

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Which of the following structures secretes chemical attractants (LURE peptides) to guide the pollen tube in the embryo sac?

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