KCET · BIOLOGY · STD 12 - 1. Sexual Reproduction in Flowering Plants
Which pair of the following cells in the embryo sac are destined to change their ploidy after fertilization?
- A Egg cell and central cell
- B Antipodals and synergids
- C Synergids and egg cell
- D Central cell and antipodals
Answer & Solution
Correct Answer
(A) Egg cell and central cell
Step-by-step Solution
Detailed explanation
(A) Egg cell and central cell,
Synergids and antipodals are the cells that are present in the embryo sac at the time of fertilization. The synergids and antipodal cells degenerate after that and the ovary converts into a fruit. Egg cell is haploid prior to fertilization and after fertilization it becomes diploid zygote. Central cell is haploid prior to fertilization but after fertilization it becomes triploid.
Synergids and antipodals are the cells that are present in the embryo sac at the time of fertilization. The synergids and antipodal cells degenerate after that and the ovary converts into a fruit. Egg cell is haploid prior to fertilization and after fertilization it becomes diploid zygote. Central cell is haploid prior to fertilization but after fertilization it becomes triploid.
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