Question

1. what are the conditions required for germination of seed.
2. name the various methods of seed dispersal and give an example each .
3. how was seeds dispersed by animals ?
4. describe how fertilisation takes place after a pollen is deposited on the stigma of a flower .​

Answer 1

Explanation:

1)what are the conditions required for germination of seed

Temperature, moisture, air, and light conditions must be correct for seeds to germinate.

2)name the various methods of seed dispersal and give an example each

There are five main modes of seed dispersal: gravity, wind, ballistic, water, and by animals. Some plants are serotinous and only disperse their seeds in response to an environmental stimulus

3)how was seeds dispersed by animals ?

Animals can disperse seeds by excreting or burying them; other fruits have structures, such as hooks, that attach themselves to animals' fur. Humans also play a role as dispersers by moving fruit to new places and discarding the inedible portions containing the seeds.

4)describe how fertilisation takes place after a pollen is deposited on the stigma of a flower

After pollen grains land on the stigma, a pollen tube grows from the pollen grain, through the style, and into the ovary. Sperm cells inside the pollen grain travel down the pollen tube and into the ovary which contains the ovules. Fertilization occurs when one of the sperm cells fuses with the egg inside of an ovule

Answer 2

Answer:

1. air, light and water conditions.

2.By air (rhizopus)

By water (spores of liverwort)

3. By animals(Chor-kata)

4. Pollen tube grows through which the pollen grains are moved to the ovary and fertilizers the ovules