Physical Health and Hygiene — Biology STD 10 — Question

The apparatus to record the rate of transpiration in a cut shoot.

Define the following:
Sexual reproduction

What are the problems faced by India owing to the ‘population explosion’?

Give appropriate term of the following:
The rupture of follicle and release of ovum from the ovary.

Name the Following: Disorder caused by excess of thyroid hormone.

Define the following:
Population density

Name the following :
The phenomenon by which living or dead plant cells absorb water by surface attraction.

Suppose a normal woman has never borne a child; How many mature eggs would she have produced in her lifetime? Your calculation should be based on two clues-
(a) Eggs are produced at the rate of 1 egg every 28 days (one menstrual cycle)
(b) A woman’s total reproductive period is 13 – 45 years.

Define the term Mutation.

What is sex-linked inheritance?