In angiosperms, pollen grain germinates to produce two male gametes. Which one of the following functions is carried out by these gametes?
- A. Both the gametes fuse with a single egg cell
- B. Both the gametes fuse with two different egg cells
- C. One gamete fuses with the egg cell and the other one eventually degenerate
- D. One gamete fuses with the egg cell and the other one fuses with a diploid secondary nucleus ✓
Correct Answer: D. One gamete fuses with the egg cell and the other one fuses with a diploid secondary nucleus
Explanation
In angiosperms, double fertilization takes place. One male gamete fuses with the egg cell to form a zygote, and the other fuses with the diploid secondary nucleus to form the triploid primary endosperm nucleus.
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