Question

The following diagram shows the cross section through the carpel of a flower just before fertilisation. Where will the male and female gametes be just before fertilisation

Answer 1

Answer:

ans. is d

Explanation:

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Answer 2

The male and female gametes will, just before the fertilization, be in d) 3, 5

Fertilization in plants

Fertilization in plants in of double fertilization. It is the very characteristic feature of the angiosperms.

Double fertilization Triple fusion

• Fertilization in angiosperms is known as double fertilization and triple fusion. Here there are two male gametes involved.
• One of the male gametes fuses with the egg cell and forms the zygote. The other male gamete fuses with the central nuclei and forms a triploid PEN.
• In the figure, the male gamete is at the end of the pollen tube entering the embryo sac through integuments- part labeled as 3 and the female gamete is in the embryo sac labeled as 5.

Hence, the double fertilization and the triple fusion results in a diploid zygote and a triploid endosperm. This is a specialized type of fertilization seen in angiospermic plants.