REPRODUCTIVE SYSTEMS IN PLANTS

The flower is the reproductive structure of flowering plants. It contains the male and female sex organs which enable them to exhibit sexual reproduction. Fertilization inside the flower often leads ...
Read More

ADAPTATION

Adaptation is defined as the possession of the characteristics or traits or behaviour or structure or features that evolved over a period of time which enable an organism to survive ...
Read More

TOLERANCE

Tolerance is the ability of living organisms to withstand or tolerate little unfavourable changes in the environment which affect their survival. Living organisms can only live in a particular habitat ...
Read More

DECOMPOSITION IN NATURE

Decomposers Decomposers are fungi or bacteria which live saprophytically or feed on dead remains of plants, animals and organisms leading to or resulting in recycling of nutrients by breaking down ...
Read More
SKIN

SKIN

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 ...
Read More
CARTILAGE

CARTILAGE

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 ...
Read More
CARBOHYDRATES

CARBOHYDRATES

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 ...
Read More
NASTIC AND TACTIC MOVEMENT

NASTIC AND TACTIC MOVEMENT

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 ...
Read More
DIGESTIVE ENZYMES

DIGESTIVE ENZYMES

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 ...
Read More
FOOT TESTS

FOOD TESTS

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 ...
Read More
Loading...