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NEET 2023
Exam
NEET
Year
2023
Subject
Botany
Chapter
Sexual Reproduction in Flowering Plants

NEET 2023 · Botany · Sexual Reproduction in Flowering Plants

In angiosperms the correct sequence of events in formation of...

In angiosperms the correct sequence of events in formation of female gametophyte in the ovule is (A) 3 successive free nuclear divisions in functional megaspores. (B) Degeneration of 3 megaspores. (C) Meiotic division in megaspore mother cell. (D) Migration of 3 nuclei towards each pole. (E) Formation of wall resulting in seven celled embryo sac. Choose the correct answer from the options given below.

Options

  1. A(B),(C),(A),(D),(E)(B),(C),(A),(D),(E)
  2. B(C),(B),(A),(D),(E)(C),(B),(A),(D),(E)
  3. C(A),(B),(C),(D),(E)(A),(B),(C),(D),(E)
  4. D(C),(E),(A),(D),(B)(C), (E), (A), (D), (B)

Correct answer

B. (C),(B),(A),(D),(E)(C),(B),(A),(D),(E)

Step-by-step solution

In angiosperms the correct sequence of events in formation of female gametophyte in the ovule is - The megaspore mother cell undergoes meiosis and forms four haploid megaspores.(C) - One remains functional and three degenerate.(B) - 3 successive free nuclear divisions in functional megaspore take place.(A) - Migration of 3 nuclei towards each pole.(D) - Formation of wall resulting in seven celled embryo sac.(E) The correct sequence is (C),(B),(A),(D),(E)(C),(B),(A),(D),(E)
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