Biology — 2000

Amoeba obtains its oxygen requirements

Which of the following best describes a colony of volvox?

The hydra has two body layers of cells called

All the following organelles have membranes except

Which of these has the most complex level of organization?

The unit contained in a cell structure responsible for changes in form and shape of organisms is called

The plant cell mostly stores food as

The presence of a large member of mitochondria in a cell indicates that

Which of the following statements is incorrect about diffusion?

In which of the following organisms is ammonia excreted as a waste product?

The following are the functions of supporting tissues in plant except

Which of the following organisms has the largest surface area-to-volume ratio?

Which of the following plant parts does not perform supportive function?

The following are useful effect of micro-organisms except

Which of the following structures is not present in the vascular bundles of a dicot stem?

When a mammal respires anaerobically for a long time

Which of the labelled structures in the diagram are involved with the entry of carbondioxide for photosynthesis?

Which of the labelled structures in the diagram will shrink when plasmolysis occurs?

The condition shown in the above diagram is due to

Which of the following solutions will induce the condition shown in the diagram?

Which of the following conditions will cause a decrease in body temperature?

The organs constantly in touch with the liver are

Which of the following is responsible for the increased heart beat of a boy who saw a python? increased production of

The nerves that arise from the brain are known as

The neurone that relay the message of effector organs are called

Each neurone consists of the following structures' except

The simplest form of nervous pathway which links receptors with effectors is known as the

Which of the following parts of the eye is sensitive to light?

What happens to an ovule of a flower, after fertilization? It

Which of the following is not a dry indehiscent fruit?

Which of the following groups consists of only micro-nutrients?

The first stable product of photosynthesis is

Which of the following statements about nitrogen is not correct? Nitrogen is needed for

A very poor growth in plants and discolouration of leaves signifies the deficiency of

Vitamin C which is water soluble is

Vitamin C deficiency results in

Members of the vitamin B complex are

Which of the following statements about phosphorous is not correct?

Vitamin E is concerned with

A balanced meal for an adult person may consist of

Which of the following food substances turns bright red when warmed with suddan III solution?

Mammals require a relatively high amount of carbohydrates because

All the available places on earth which support life constitute the

The abiotic factor which determines the depth to which light penetrates in a pond is

Which of the following organisms is a producer?

Which of the following groups consists of heterotrophs?

Which of the following organisms will not bring about decomposition?

Which of the following is not released during decay of living matter?

In commensalism

Parasitism can best be defined as an association between two organisms in which

Which of the following best describes the adaptation of the earthworm to its habitat?

Trypanosomiasis is associated with

The major reason why foods should be properly covered is that

Which of the following is not a means of conserving natural resources?

Which of the following resources is non-renewable?

Character which falls to express itself in the first filial generation but emerges in the second is

The concept of use and disuse of parts was postulated by

Which of the following represents Mendel’s second law of inheritance? The factors for two pairs of contrasting characters are

Which of the following terms is not associated with fingerprint and classification?

During blood transfusion, agglutination could be prevented if a patient having blood group O is given blood from group