BIOLOGY

It is sometimes very difficult to determine growth in organism. Growth varies from one organism to another. Parameters normally used to measure growth in organisms include: Mass. Length, height or ...

The entire surface of the body is covered by skin. In man, the skin is about 1 to 2mm thick except the skin of the palm and soles with thickness ...

A cartilage is a tough elastic and semitransparent tissue devoid of blood vessels and nerves. Functions of cartilage It prevents friction between two bones and allows smooth and free movement ...

Carbohydrates are organic compounds containing carbon, hydrogen and oxygen atoms. The ratio of hydrogen to oxygen is 2:1 in all carbohydrates. Starch, sugar, glycogen and cellulose are carbohydrates. They are ...

Nastic/sleeping movements The pinnate and bipinnate leaves of many leguminous plants open and close as a result of certain changes in temperature, light intensity or humidity of the atmosphere. The ...

Enzymes are organic catalysts of protein origin produced by living cells which help to speed up or slow down the rate of chemical reactions but remain chemically unchanged at the ...

Food substances are chemical compounds and therefore can be tested chemically. Test for carbohydrates Test for glucose (a reducing sugar) To a little solution of glucose, add small quantities of ...

1) Hibernation: Hibernation is a behavioural adaptation in which some small mammals such as shrews, monotremes and bats spend cold season (winter) in inactive condition or deep sleep in a ...

Stomata Stomata are openings in the epidermal layer of leaves of plants. Two guard cells surround each stoma. The guard cells are bean-shaped. The inner cellwalls of the guard cells ...

Auxins help primarily in influencing cell elongation and enlargement hence sometimes referred to as growth hormones. Actions of auxins are to stimulate or inhibit growth hence they are regarded as ...