Light — Science STD 8 — Question

State whether the following statements are true or false:
A girl should not be allowed to work in the kitchen during menstruation.

State whether the following statements are true or false:
Man (father) is responsible for the sex of the body.

State whether the following statements are true or false:
The number of oscillations per second of a vibrating object is called its time-period.

State whether the following statements are true or false:
The sex chromosomes in all the gametes (sperms) of a man are not identical.

State whether the following statements are true or false:
Half the female gametes contain X chromosomes and the other half contain Y chromosomes.

State whether the following statements are true or false:
Each normal cell in our body contains 23 chromosomes and the other half contain Y chromosomes.

State whether the following statements are true or false:
A piece of fresh potato does not conduct electricity at all.

State whether the following statements are true or false:
The basic living unit of an organism is organ.

State whether the following statements are true or false:
A charged glass rod attracts a charged plastic straw.

State whether the following statements are true or false:
The plates of earth's crust are continuously moving.