An ecosystem is composed of all of the following except:

One of the following are usually worm-like, cylindrical or flattened

In plants, the structures that play roles similar to the arteries and veins of animals are the

The sexual reproductive units produced by mature individuals of sexually reproducing species of organism is called

In a food web, tertiary consumers belong to which trophic level

The cocoon into which an earthworm lays its egg is produced in the

Maize is best stored against insect attack

Which of these animals is not metamerically segmented

The rhesus factor of blood was first identified in a category of

Two plants with red flowers were back crossed, which of the following results indicates that the plants are heterozygous red flower, where red flowers are dominants?

The reproduction of cell is controlled by which of the following:

One of the following is not an excretory structure

The hereditary factor of the material for inheritance is

A sudden change in a gene or genes is called

The muscle cell fluid of an athlete was tested immediately after a 100m race and was found to contain a high concentration of lactic acid. Explain what could have caused this. The

In the mammal, the autonomic system consists of

S phase in growth curve is known as?

The random way genes recombine during meiosis and fertilization leads to

Genetically modified food products have not become universally accepted because

The theory that new organs or characteristics develop in organisms when there is a need for them was postulated by

Circulation of blood to all parts of the body excepts the lungs is through

Daughters receives their X-chromosome from their

In a cell, the genes are carried by

In bony fishes, the swim bladder is used for

Principles of heredity can be applied in one of these

Which of these does not have respiratory and circulatory systems

In insects, the structure that performs the same function as the kidney in man is the

Manufactured food in the plants is transported through the

The random way genes recombine during meiosis and fertilization leads to

Which of the following is used mainly for balancing in fish?

The primary structure responsible for pumping blood for circulation through the mammalian circulatory systems is the

The order of food passage in the digestive system is

The roots hairs are

Octopus is popularly known as __________ fish

The sterile individuals in the honey bee are known as

The genetic make- up of an organism is called

One of this is not a continuous variation

One of the following is usually worm-like, cylindrical or flattened

Plants that are adapted to grow in dry land where water content is low are

Which of the following is NOT a function of the nucleus of a cell?

Ribosomes are found in all living cells. What is their function?

The division of nucleus is known as

Spear grass has underground structure called

Which of the following constitutes the main internal tissue of leaf?

What happens to a man whose pancreas has been surgically removed?

One of this is not a shape of fingerprints

Carbohydrates are stored in animal cells as

In a food web, tertiary consumers belong to which trophic level

Which of the following factors is not associated with aquatic habitat

What is the term used to describe the sum total of biotic and abiotic factors in the environment of the organism?