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प्रश्न
Name the nuclei involved in triple fusion.
उत्तर
The nuclei involved in this triple fusion are the two polar nuclei or secondary nucleus and the second male gamete.
संबंधित प्रश्न
Read the following statement and answer the questions that follow :
"A guava fruit has 200 viable seeds."
(a) What are viable seeds?
(b) Write the total number of :
(i) Pollen grains (ii) Gametes
in producing 200 viable guava seeds.
c) Prepare a flow-chart to depict the post-pollination events leading to viable-seed production in a flowering plant.
Explain the events up to double fertilisation after the pollen tube enters one of the synergids in an ovule of an angiosperm.
What happens to the following after fertilization?
Ovules
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:
Name the parts labelled 1, 2, 3, 4 and 5.
Given ahead is a diagrammatic representation of the process of fertilization. Study the same and then answer the question that follows:
Name the parts labelled 1, 2, 3, 4, 5 and 6.
Even though each pollen grain has 2 male gametes, why at least 20 pollen grains are required to fertilize 20 ovules in a particular carpel?
Describe the process of double fertilization.
Transmitting tissue is found in
Caruncle develops from
In majority of plants pollen is liberated at
What is Mellitophily?
Pollen tube was discovered by
The success of seed plants on land is mainly due to ______.
Identify the CORRECT statement with reference to cellular endosperm.
In a breeding experiment, the selected male parent is diploid and the female parent is tetraploid. What will be the ploidy level of the endosperm that will develop after double fertilisation?
Double fertilization was first discovered by Nawaschin (1898) in ______.
Fusion of one of the male gametes with egg nucleus is referred to as ______.
After fertilization, the seed coat of seeds develops from ______
All the events from pollen deposition on the stigma until pollen tubes enter the ovules are together referred to as ______.
Name the following:
A diploid nucleus in central cell of embryo sac in plants.
