Mitosis

Biology

PRACTICAL ACTIVITIES TO DEMONSTRATE CONTINUOUS VARIATIONS

PRACTICAL ACTIVITIES TO DEMONSTRATE CONTINUOUS VARIATIONS.

Height of students

Students should work in pairs, use chalk and metre rule to mark level of top of head onto the wall.
Or door as one student stands straight without shoes, next to the wall or door.
The height for each student is recorded on chalk board.
The frequency distribution of height is recording as the height is grouped into various classes.
A histogram to represent frequency against height is drawn.
The normal bell shaped curve is observed.

Biology

REPRODUCTION IN PLANTS AND ANIMALS

REPRODUCTION IN PLANTS AND ANIMALS.

Introduction:

The process by which mature individuals produce offspring is called reproduction.
Reproduction is a characteristic of all living organisms and prevents extinction of a species.
There are two types of reproduction: sexual and asexual reproduction.
Sexual reproduction involves the fusion of male and female gametes to form a zygote.
Asexual reproduction does not involve gametes.