NEETBotanySexual Reproduction in Flowering Plants
Match List-I with List-II regarding the development of reproductive structures in angiosperms from their respective mother cells. List-I List-II (A) Functional megaspore (I) 1 Meiosis and 3 Mitosis (B) Mature embryo sac (II) 1 Meiosis only (C) 2-celled pollen grain (III) 1 Meiosis and 1 Mitosis (D) 3-celled mature male gametophyte (IV) 1 Meiosis and 2 Mitosis Choose the correct answer from the options given below:
Options
- A(A)-(II), (B)-(I), (C)-(III), (D)-(IV)
- B(A)-(II), (B)-(IV), (C)-(III), (D)-(I)
- C(A)-(III), (B)-(I), (C)-(II), (D)-(IV)
- D(A)-(II), (B)-(I), (C)-(IV), (D)-(III)
Correct answer
A. (A)-(II), (B)-(I), (C)-(III), (D)-(IV)
Step-by-step solution
In angiosperms, the Megaspore Mother Cell (MMC) undergoes 1 meiotic division to form 4 haploid megaspores, out of which usually one remains functional. Thus, a functional megaspore requires 1 meiosis only (A - II). The functional megaspore undergoes 3 sequential free-nuclear mitotic divisions to form an 8-nucleate, 7-celled mature embryo sac (B - I). The Pollen Mother Cell (PMC) undergoes 1 meiotic division to form 4 functional microspores. Each microspore undergoes 1 mitotic division to form a 2-celled pollen grai