Deposited by- Abhishek Kumar

Kishan Singh

SEXUAL REPRODUCTIONIN PLANTS

PARTS OF FLOWER

CARPEL AND ITS PARTS

STAMEN AND ITS PARTS

SELF POLLINATION Self-pollination is a form 

of pollination that can occur when a flower has both stamen and a carpel (pistil) in which the cultivar or species itself fertile and the stamens and the sticky stigma of the carpel contact each other in order to accomplish pollination. The term is inaccurately used in many cases where an outside pollinator is actually required; such plants are merely self fertile, or self pollen zing.

CROSS POLLINATION The transfer of pollen from the male

reproductive organ (an anther or a male cone) of one plant to the female reproductive organ of another plant. Insects and wind are the main agents of cross-pollination. Most plants reproduce by cross-pollination, which increases the genetic diversity of a population. Mechanisms that promote cross-pollination include having male flowers on one plant and female flowers on another, having pollen mature before the stigmas on the same plant are chemically receptive to being pollinated, and having anatomical arrangements that make self-pollination less likely.

AGENTS RESPONSIBLE FOR POLLINATION

      AIR

   WATER

GERMINATION

Germination is the process in which a plant or fungus emerges from a seed or spore, respectively, and begins growth. The most common example of germination is the sprouting of a seedling from a seed of an angiosperm or gymnosperm. However the growth of a spore ling from a spore, for example the growth of hyphae from fungal spores, is also germination. In a more general sense, germination can imply anything expanding into greater being from a small existence or germ.

     After the processes of sexual fertilization in plants, the zygote divides  several  times  to  form  an  embryo  within  the  ovule.  The ovule develops a tough coat and is gradually converted into the seed.  The  ovary  grows  rapidly  and  ripens  to  form  a  fruit.

MR. M.R Gujjar