Question

Q 9. Read the following information carefully regarding pollination in
flowers and answer the questions given at last :
Insects visit flowers and
carry away pollen on their
bodies. If the pollens land on
My Pollination
the stigma of the same am
flower it is called SELF
POLLINATION. When the
pollen of the flower lands on the stigma of another flower of the
same plant or that of a different plant of the same kind, it is called
CROSS POLLINATION.
A) What will happen if pollen of Rose plant will fall on the stigma of Lotus plant.
B)
Give any two examples each, of plants showing self-pollination
and cross pollination .
C)
Write two advantages of cross pollination over self - pollination .​

Answer 1

1. If pollen of rose gets deposited on stigmas of lily flower, then germination will not take place because though many pollens land on the stigma of flowers, only the pollens of flowers belonging to the same species germinate to form the pollen tube to reach the ovary.
2. Self-pollination occurs when the pollen from the anther is deposited on the stigma of the same flower, or another flower on the same plant. Cross-pollination is the transfer of pollen from the anther of one flower to the stigma of another flower on a different individual of the same species.
3. The offspring are healthier. The seeds are produced in larger number and are more viable. The seeds develop and germinate properly and grow into better plants. Results in new varieties because cross-pollination can be carried out between two different varieties of the same species or even two species.