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प्रश्न
What is Mellitophily?
उत्तर
Pollination carried out by Bees is said to be mellitophily.
संबंधित प्रश्न
What is double fertilisation? Describe the process in brief.
'Formation of primary endosperm nucleus is called triple fusion'. Give reason
What is triple fusion?
Match the items in Column A with those in Column B.
|
Column A |
Column B |
|
(a) Generative nucleus |
(i) Pollen tube |
|
(b) Germ pore |
(ii) Endosperm nucleus |
|
(c) Exine |
(iii) Testa |
|
(d) Secondary nucleus |
(iv) Fertilization |
|
(e) Integument |
(v) Male nuclei |
|
(f) Egg nucleus |
(vi) Rough |
What happens to the following after fertilization?
Stamens
What is ‘double fertilization’? Describe it with the help of a neat and well-labeled diagram. Give its importance.
The question has four options. Choose the correct answer:
The study of fruits is known as
Describe the process of double fertilization.
Why fertilization process in angiosperms is called as double fertilization?
The correct order of haploid, diploid, and triploid structure in fertilized embryo sac is
Syngamy results in the formation of ______.
Caruncle develops from
Pollen tube was discovered by
In angiosperms, for formation of which of the following triple fusion is necessary?
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 ______.
Find out the CORRECT sequence of events taking place in pollen - pistil interaction.
- Pollen tube enters one of the synergids and bursts to release male gametes.
- Pollen tube enters the ovule through the micropyle of the ovary.
- The pollen tube grows through the stigmatic tissue and then style.
- Pistil recognizes the correct pollen and accepts it.
Select the option that shows the correctly identified 'U', 'X', 'Y' and 'Z' in a developing dicot embryo.
What is Siphonogamy?
