Advertisements
Advertisements
प्रश्न
Give any four points of significance of double fertilization.
Give the significance of double fertilization.
उत्तर
- It is a unique feature of angiosperms.
- It ensures that the parent plant invests a seed with a food store only if the egg is fertilized.
- The diploid zygote develops into an embryo, which consequently develops into a new plant.
- The triploid PEN develops into nutritive endosperm tissue.
- It restores the diploid condition by the fusion of the haploid male gamete with the haploid female gamete (i.e., through syngamy).
- It also helps to avoid polyembryony.
APPEARS IN
संबंधित प्रश्न
Where and how does triple fusion take place?
(a) Explain the events after pollination leading to the formation of a seed in angiosperms.
(b) Mention the ploidy levels of the cells of different parts of an albuminous seed.
Given ahead is a diagrammatic sketch of the sectional view of a germinating pollen grain. Study the same and then answer the question that follows:
What happens to the part labelled '5' during the process?
The question has four options. Choose the correct answer:
One male gamete fuses with the egg and forms a diploid zygote. This process is called
The question has four options. Choose the correct answer:
The study of fruits is known as
Long Answer Question:
Draw a labeled diagram of the L.S. of anatropous ovule and list the components of the embryo sac and mention their fate after fertilization.
Pollen tube was discovered by
Male gametes in angiosperms are formed by the division of ______.
Write a short note on Heterostyly.
Name the nuclei involved in triple fusion.
