NEETBiologySexual Reproduction in Flowering PlantsMCQ+4 / −1
What is the fate of the male gametes discharged in the synergid?
- AOne fuses with the egg, other (s) fuse (s) with synergid nucleus.
- BOne fuses with the egg and other fuses with central cell nuclei.
- COne fuses with the egg, other (s) degenerate (s) in the synergid.
- DAll fuse with the egg.
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Correct answer: B
In flowering plants,
Out of the two male gametes, one gametes fuses with the nucleus of the nucleus of the egg cell and forms the zygote. The process is known as syngamy.
The other male gamete fuses with the two polar nuclei located in the central cell to form a triploid primary endosperm nucleus (PEN). Since, the process involves the fusion of three haploid nuclei, it is known as triple fusion.
Since two kinds of fusions (syngamy and triple fusion) take place in an embryo sac it is known as double fertilisation
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