Question

7. Where does fertilisation take place in a
em flower? in
8. Differentiate between (i) seed and fruit and
(ii) self pollination and cross pollination.
9. Mention the conditions necessary for seed
germination.
10. Describe the process of germination in bean
and maize seeds.
11. Name the two types of seed germination.
12. Draw labelled diagrams showing stages of
hypogeal germination
13. Draw labelled diagrams showing stages of
epigeal germination.
19​

Answer 1

Answer:

Explanation:

7. The pollen tube penetrates the style and reaches the ovary. Male nucleus is transferred through this pollen tube. Finally, fusion of male and female nuclei takes place inside the ovary. This step is called fertilization

8.Self pollination is the transfer of pollen grains from the anther of a flower to the stigma of same flower or to the stigma of another flower borne on the same plant while as Cross pollination is the transfer of pollen grains from the anther of one flower to the stigma of another flower borne on different plant but the

9.All seeds need water, oxygen, and proper temperature in order to germinate. Some seeds require proper light also. Some germinate better in full light while others require darkness to germinate. When a seed is exposed to the proper conditions, water and oxygen are taken in through the seed coat.

10.Germination in bean seed is called epigeal germination. ... Germination starts with the uptake of water which bursts the seed coat and radicle comes out and grows downwards. Region of plumules elongates and seed comes out of the soil. The plumule emerges between the two cotyledons.

11. Epigeal Germination: In this type of germination, the hypocotyl elongates rapidly and arches upwards pulling the cotyledons which move above the soil. ...

Hypogeal Germination: In this type of germination, the epicotyl elongates and the cotyledons remain below the soil.