14. Answer in Details I

Write a brief account on pollination.

 

a. Pollination is the transfer of pollen grains from the anthersepal to the stigma.

 

b. In naturalartificial pollination, the pollen grains are manually transferred from male flower to the female flower. This may happen either in the field or in the laboratory.

 

c. In naturalartificial pollination, pollen grains reach the stigma of the flower naturally through the agents of pollination such as wind, water, insects, birds, etc.

 

d. In crossself pollination, transfer of pollens occur from the stamen to the pistil of the same flower through the agents of pollination.

 

e. It occurs mostly in bisexualunisexual flowers.

 

f. The self pollinating flowers do not produce more pollens as the stigma is very near to it. FalseTrue

 

g. The new plant produced through self pollination shows difference in characteristics. FalseTrue

 

h. In selfcross pollination, transfer of pollens occur from the stamen of another flower to the pistil of another flower through the agents of pollination.

 

i. It occurs mostly in unisexualbisexual flowers.

 

j. The cross pollinating male flowers produce less pollen so that it reaches the female flower which may not be in its vicinity. TrueFalse

 

k. The new plant produced through cross pollination have characteristics of both the plants. FalseTrue