Differentiate between egg cells and secondary nucleus found in em…

Question

Differentiate between egg cells and secondary nucleus found in embryo sac of angiosperms.

✓

Answer

Differences between Egg cell and Secondary nucleus :

S.No.	Egg Cell	Secondary Nucleus
1	It is situated closely to micropyle inembryo sac.	It is situated almost in the middle of embryo sac.
2	Egg cell is surrounded by synergids on either side.	It is not surrounded by any structure.
3	It has only one nucleus which has haploid no. of chromosomes.	It has two haploid nuclei which fuse together forming diploid secondary nucleus.
4	It fuses with male gamete to produce zygote (2n).	It fuses with male gamete to produce primary endosperm nucleus (3n).

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