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 […]
PRACTICAL ACTIVITIES TO DEMONSTRATE CONTINUOUS VARIATIONS Read More »
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.
REPRODUCTION IN PLANTS AND ANIMALS Read More »
What is growth? Growth is the irreversible increase in dry mass, size and complexity of an organism brought about by the synthesis of new protoplasm. For growth to be effective, building up of materials (anabolism) must exceed the rate of breaking down (catabolism). In plants, growth is indefinite and apical while it is definite and
Growth is defined as an irreversible increase in volume, size, and number of parts, length and weight of an organism It is an organic process which takes sometimes to accomplish. The three processes involve in growth are Cell division:- is a process by which cell increases in number and is achieved by cell division called