Which of the following statements about living things is correct?

Organ level of organization in living things is found in

Diagrams X and Y below are illustrations of transverse sections of a part of plants. Study them and answer questions 3 to 5.

Which of the following statements is not correct? Diagrams X and Y are sections of

Diagrams X and Y below are illustrations of transverse sections of a part of plants. Study them and answer questions 3 to 5.

The part responsible for conducting water and dissolved mineral salts from the soil to the leaves is labelled

Diagrams X and Y below are illustrations of transverse sections of a part of plants. Study them and answer questions 3 to 5.

The part labelled II is the

The organelles in cells which are also referred to as suicidal bags are the

The process that brings about the shrinking of a Spirogyra cell when placed in a strong solution is

The region of a plant stem in which cells divide to increase its diameter is the

The total number of caudal vertebrae in animals X and Y is 4 and 27 respectively. The animals are likely to be

Which of the following blood components has the greatest affinity for oxygen and carbon (IV) oxide?

Use the following processes to answer questions 11 and 12. I — Ribs move upward and outward II — Diaphragm relaxes III — Volume of thorax increases IV — Air is forced out of the lungs Which of the processes take place during inspiration?

Use the following processes to answer questions 11 and 12. I — Ribs move upward and outward II — Diaphragm relaxes III — Volume of thorax increases IV — Air is forced out of the lungs Which of the processes is a direct result of contraction of the intercostal muscles?

The process by which the amount of water and solutes in the blood are controlled is known as

The table below shows the effect of hormones I, II, III and IV on some parts of the human body. Where (✓) represents effect and (x) represents no effect of hormone on the corresponding part of the body. Study it and answer questions 14 and 15.

Which of the following hormones are I, II, III and IV respectively?

The table below shows the effect of hormones I, II, III and IV on some parts of the human body. Where (✓) represents effect and (x) represents no effect of hormone on the corresponding part of the body. Study it and answer questions 14 and 15.

The hormone responsible for anxiety is

The diagram below is an illustration of some parts of a mammalian ear. Study it and answer questions 16 to 18.

The parts labelled I are the

The diagram below is an illustration of some parts of a mammalian ear. Study it and answer questions 16 to 18.

Which of the parts are correctly grouped? Inner ear middle ear outer ear

The diagram below is an illustration of some parts of a mammalian ear. Study it and answer questions 16 to 18.

The middle ear is connected to the pharynx by the part labelled

The diagrams below are illustrations of two different cells involved in a biological process in mammals. Study them and answer questions 19 to 21.

Which parts of P and Q fuse to complete the biological process?

The diagrams below are illustrations of two different cells involved in a biological process in mammals. Study them and answer questions 19 to 21.

Which of the following statements about P and Q is correct?

The diagrams below are illustrations of two different cells involved in a biological process in mammals. Study them and answer questions 19 to 21.

If the number of chromosomes in the skin cells of mammals is 46, how many chromosomes would be found in P and Q respectively?

The diagrams below are illustrations of two different cells involved in a biological process in mammals. Study them and answer questions 19 to 21. In which of the following structures is simple sugar produced?

An evidence of the occurrence of photosynthesis in an experiment is the

The major sources of vitamin A are

Diagram J is a protease while diagrams K, L, M and N are food substances. Study them and answer questions 25 to 27.

Which of the illustrated food substances would form a reaction with protease J?

Diagram J is a protease while diagrams K, L, M and N are food substances. Study them and answer questions 25 to 27.

Protease J would react with the particular illustrated substance because enzymes

Diagram J is a protease while diagrams K, L, M and N are food substances. Study them and answer questions 25 to 27.

After a reaction between protease J and the food substance, the end-product would be

The property of clayey soil that prevents it from supporting thick vegetation is its

Which of the following practices will not maintain soil fertility?

A group of organisms of the same species living in a particular place is known as

The diagram below is an illustration of an experiment on sedimentation of soil. Use it to answer questions 31 and 32.

The organic component of the soil is labelled

The diagram below is an illustration of an experiment on sedimentation of soil. Use it to answer questions 31 and 32.

The part labelled IV is

Which of the following pyramids is not used in ecology? Pyramid of

Study the food chain illustrated below and use it to answer questions 34 to 36.

J → K → L → M → N

Organism J is normally sustained by energy from

Study the food chain illustrated below and use it to answer questions 34 to 36.

J → K → L → M → N

Which of the following statements about organism L is correct?

Study the food chain illustrated below and use it to answer questions 34 to 36.

J → K → L → M → N

The position occupied by each of organisms J, K, L, M and N in the food chain is known as the

Which of the following features is not an adaptation of plants to aquatic habitats?

The biological association that contributes directly to succession in a community is

The conservation of natural resources is enhanced by the following practices except

The burning of farmlands should be discouraged because it

The use of a lighter instead of matchsticks is a way of conserving

An accident victim was successfully transfused with blood from the father whose blood group is AB. The blood group of the accident victim is

Which of the following traits in humans is an example of physiological variation?

Individuals belonging to blood group O are universal donors because

Two tall plants were crossed and all the F1 plants were tall. When the F1 plants were selfed, some of the F2 plants were tall while others were short. What are the possible genotypes of the original plants?

Which of the following statements best describes a test cross? It is a

Which of the following statements about sex-linked traits is not correct?

When two carriers of sickle cell anaemia produce an offspring, the probability of the offspring being a sickler is

Which of the following organisms exhibits adaptive colouration?

Which of the following sequences is the correct evolutionary trend in organisms?