E. Give reasons for the following.
1. Coconut is a huge fruit but it floats on water.
2. Birds help in seed dispersal.
3. Sexual reproduction in plants involve the fertilization of gametes.
4. Pollination is essential for the formation of fruits.
5. Fungal spores remain dormant until favorable conditions are met.
Answers
Answer:
1. Even though coconut is large and heavy, it contains an outer fibrous coat which has the ability to float on water
2.The seed dispersal by birds and other mammals are able to attach themselves to the feathers and hairs of these vertebrates, which is their main method of dispersal.
3.Sexual reproduction requires genetic material (DNA) from two parents. The parent plants have male and female sex cells, called gametes. The genetic material from the male and female gametes combines to produce offspring. This process is called fertilization.
4. Pollination is important because it leads to the production of fruits we can eat, and seeds that will create more plants. ... When a pollinator visits a flower it is looking for food but while feeding these insects ac- cidentally transfer pollen grains between flowers and help the plants produce fruits and seeds.
5.Spores are products of both sexual and asexual reproduction and act as the prime units of dispersal in fungi. ... Spores under these conditions are exogenously dormant and will only germinate when environmental conditions become favourable.
Explanation:
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