Advertisements
Advertisements
प्रश्न
Which are the three cells found in a pollen grain when it is shed at the three celled stage?
उत्तर
One vegetative cell and two male gametes.
APPEARS IN
संबंधित प्रश्न
'Formation of primary endosperm nucleus is called triple fusion'. Give reason
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.
Differentiate between outbreeding and outcrossing.
During double fertilization second male gamete fuses with ___________.
What is the function of the pollen tube? Explain it with the help of a diagram.
What is ‘double fertilization’? Describe it with the help of a neat and well-labeled diagram. Give its importance.
Explain the pollination process in Salvia
After fertilization the ovule becomes ______.
Transmitting tissue is found in
Explain the development of a Dicot embryo
In double fertilization, the first male gamete fuses with the egg and the second male gan1ete fuses with which of the following?
By which of the following double fertilization is exhibited?
Identify the function of filiform apparatus.
From the following identify the fate of the male gametes discharged in the synergid.
Through which route the pollen tube can enter the ovule?
Double fertilization and triple fusion were discovered by ______.
Double fertilization is a distinctive feature of ______.
After fertilization, the seed coat of seeds develops from ______
Identity the part of embryo sac which takes part in formation of primary endosperm nucleus during fertlisation
Name the following:
A diploid nucleus in central cell of embryo sac in plants.
