Question

C. Long answer questions:
1. How do pollen grains adapt themselves?
2. What is the importance of dispersal of fruits and seeds?
3. What is the importance of seed formation in the plants ?
4. What is the basis of classification of seeds ?
5. What is meant by germination ?​

Answer 1

Answer:

C. Long answer questions:

1. Pollen grain are dispersed to one of their kind with the help of animals, wind and water. The pollen grains are transferred to intersect male and female gametes. ...Plants adapted for wind pollination have small, light Pollan so that it can be carried by the wind. They have feathery stigmas to catch the Pollen.

2. dispersal of seeds is very important for the survival of plant species. If plants grow too closely together, they have to complete for light, water and nutrients from the soil. Seed dispersal allows plants to spread out from a wide area and avoid competing with one another for the same resources.

3. Seeds provide a protective coat so that the embryo plant can develop when it finds a nice piece of soil. Seeds are a protective structure that lets a plant embryo survive for long periods of time before it germinates.

4. state classification is a process in which different varieties of seeds are categorised into different classes on the basis of their morphology features. ...The features of seed used our area, perimeter, compactness, length of kernel, width of kernel, asymmetry Coefficient and length of kernel groove.

5. The beginning of growth, as of a seed, spore, or bud. The germination of most seeds and spores occurs in response to want and water is known as germination.

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Answer 2

Explanation:

Seeds and fruits are formed by fertilization. In angiosperms, two structures are formed as a result of double fertilization – a diploid zygote and a triploid primary endosperm cell. The zygote develops into an embryo, whereas, the endosperm cell gives rise to endosperm. It provides nourishment to the growing embryo. Both fruits and seeds are an important part of angiosperms.