In which type whole of the megaspore mother cell takes part in the formation of the female gametophyte
A) Monosporic 8 nucleate B) Monosporic 4 nucleate C) Bisporic D) Tetrasporic
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D) tetrasporic
megaspore mother cell divides into 4 cells
here tetra denotes that all the four types of cells are taking part in the formation of female gametophyte .
megaspore mother cell divides into 4 cells
here tetra denotes that all the four types of cells are taking part in the formation of female gametophyte .
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Answer:
Option (D) Tetrasporic
Explanation:
A diploid MMC or megaspore mother cell grows in size and undergoes a meiotic division. This results in a linear tetrad of 4 haploid megaspore cells.
Thus a haploid megaspore is the first cell of the female gametophyte. Tetrasporic development takes place when no meiotic division is accompanied by cytokinesis. As a result, the linear megaspore tetrad contains 4 nuclei in a commonly shared cytoplasm.
Hence option (D) is correct.
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