Advertisements
Advertisements
प्रश्न
Name the part of gynoecium that determines the compatible nature of pollen.
उत्तर
Stigma
APPEARS IN
संबंधित प्रश्न
Double fertilization is reported in plants of both, castor and groundnut. However, the mature seeds of groundnut are non-albuminous and castor are albuminous. Explain the post fertilization events that are responsible for it.
Why do you think the zygote is dormant for sometime in a fertilised ovule?
(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.
During double fertilization second male gamete fuses with ___________.
What happens to the following after fertilization?
Ovules
What is ‘double fertilization’? Describe it with the help of a neat and well-labeled diagram. Give its importance.
What is a fruit?
The question has four options. Choose the correct answer:
When only ovary forms fruits they are 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.
After fertilization the ovule becomes ______.
Match the following
| I) | External fertilization | i) | pollen grain |
| II) | Androecium | ii) | anther wall |
|
III) |
Male gametophyte | iii) | algae |
| IV) | Primary parietal layer | iv) | stamens |
Which of the following happens during triple fusion?
By which of the following double fertilization is exhibited?
Identify the function of filiform apparatus.
If the cells of the nucellus in the angiosperm ovule contain 24 chromosomes, then ____________ chromosomes will be present in the endosperm of a self-pollinated flower.
The female gametophyte of a typical dicot at the time of fertilisation is ______.
Fusion of one of the male gametes with egg nucleus is referred to as ______.
In ______ sepal is seen on the fruit after fertilization.
All the events from pollen deposition on the stigma until pollen tubes enter the ovules are together referred to as ______.
Give a term for the following:
Fusion of male gamete and secondary nucleus in angiosperms.
