Class 7

Transfer of pollen grain from anther to stigma is called pollination .

In sexual reproduction a male and a female gamete fuse to form a zygote.

female gamete is ovum or, egg.

Anther contains pollen grains which produce male gametes.

Flowers which contain both stamens and pistil are called bisexual flowers.

Flowers which contain either only pistil or only stamens are called unisexual flowers.

pistil is the female reproductive part of plants

Stamens are the male reproductive part of pants.

Spore formation:- Spores are asexual reproductive bodies. Each spore is covered by a hard protective coat to withstand unfavourable conditions such as high temperature and low humidity. So they can survive for a long time. Under favourable conditions, a spore germinates and develops into a new individual. Plants such as moss and ferns also reproduce …

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Whan water and nutrients are available algae grow and multiply rapidly by fragmentation. An alga breaks up into two or more fragments. These fragments or pieces grow into new individuals . This process continues and they cover a large area in a short period of time.