The 13–celled male gametophyte of Selaginella shows
(a) 8 cells of the antheridium + 5 prothallial cells
(b) 9 cells of the antheridium + 4 prothallial cells
(c) 10 cells of the antheridium + 3 prothallial cells
(d) 8 jacket cell + 4 androgonial + 1 prothallial cells
Answer: d
(25)
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