Directions : In the following question more than one of the answers given may be correct. Select the correct answer and mark it according to the code:
In Polygonum type of embryo sac, the cells are: (1) haploid (2) diploid (3) triploid (4) polyploidyA) 1,2 and 3 are correct
B) 1 and 2 are correct
C) 2 and 4 are correct
D) 1 and 3 are correct
Correct Answer: B
Solution :
The polygonum type of embryo sac is derived from only one of the four megaspore nuclei formed as a result of meiosis in the megaspore mother cell, whereas it is the most common mode of embryo sac development. In angiosperms there are a substantial number of plants where two or all the four megaspore nuclei take part in the formation of female gametophyte. In polygonum type of embrhyo sac, the cells are haploid and diploid both.
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