A) One fuses with egg other(s) degenerate(s) in the synergid.
B) All fuse with the egg.
C) One fuses with the egg, other(s) fuse(s) with synergid nucleus.
D) One fuses with the egg and other fuses with central cell nuclei.
Correct Answer: D
Solution :
| In flowering plants, out of the two male gametes discharged in synergids, one fuses with the egg and other fuses with the secondary or definitive nucleus present in central cell. |
| \[Egg(n)+1st\text{ }male\text{ }gamete(n)\xrightarrow[{}]{{}}Zygote(2n)\] |
| \[\underset{(central\text{ }cell\text{ }nuclei)}{\mathop{\underset{(2n)}{\mathop{Secondary\text{ }nucleus}}\,}}\,+2nd\text{ }male\text{ }gamete(n)\xrightarrow[{}]{{}}\] |
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