Question

36. (a) List two reasons for the appearance of variations among the progeny formed by
sexual reproduction
(5M)
b)
1 Name the part marked 'A' in the diagram,
2. How does 'A' reach part 'B'?
3. State the importance of part 'C'.
What happens to the part marked 'D' after fertilization is over?​

Answer 1

a) The two major reasons for appearance of variation among the progeny formed from sexual reproduction are; crossing over in which the DNA gets exchanged between the homologous chromosomes during the meiosis that causes variation in the offspring.

b)

1) A is the pollen grain om stigma

2) A is pollen grain which reach the part B that is stigma by pollination.

3) After fertilization occurs, each ovule develops into a seed. Each seed contains a tiny, undeveloped plant called an embryo. The ovary surrounding the ovules develops into a fruit that contains one or more seeds

Hope it helps.