Question

Stions.
Ix
17 Read the following and answer any four questions from 17 (i) to 17 (v)
Human beings show sexual reproduction. Male parent produces male gametes
called sperms. Female parent produces female gametes called ova. Sperms have
tail and are therefore, motile. They are produced in large numbers in the testes.
Ovum is bigger, non-motile and only one ovary produces one ovum in one
month. There is no food stored in the sperms whereas ova contain stored food.
Both the gametes are microscopic unicellular and have half the number of
chromosomes as compared to the body cells.
17 (i) What is reproduction ? What are the two types ? Which one of the two
confers new characteristics on the offspring and how ?
17 (ii) “Cell division is a type of reproduction in unicellular organisms”. Justify
17 (111) List two functions performed by testes in human beings
17 (iv) Ment
Mention the information source of making proteins in the cell
In what respect is the human male gamete different from the female gamete ?
What is the importance of this difference ?
17 (V)​

Answer 1

Explanation:

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