Biology JAMB, WAEC, NECO AND NABTEB Official Past Questions

Study specimens L, M, N, P, Q, R and S carefully and use them to answer questions 4(a) to 4(d).

(a) Name two specimens which can be used for the following: (i) transaction; (ii) protection; (iii) statement.

(b) Stating observable features in specimens L, M, N, P,Q and R, Suggest one reason each for the answers given in 4(a)i), (ii) and (iii) above.

(c) State. (i) two observable similarities; (ii) two differences between specimens P and R.

(d)(i) Sate how observable features of specimen M adapt the specimen to its functions. 

(ii) Arrange specimens L, , N and S in the increasing order of  complexity of the organism to which they belong.

Study specimens E, F, G1 and G2 carefully and use them to answer questions 2(a) to 2(d).

(a)(i) Name the life process in mammals that is associated with specimens E. 

(ii) State two structural similarities between the surface of specimen E and the skin of specimen F.

(b)(i) Name the habitat in which specimen F will function efficiently. 

(ii) Explain how two observable features of specimens F adapt the organism to its habitats.

 (C)(i) Using the blade provided cut a thin transverse section of the stem of specimens G add two drops of freshly prepared iodine solution to the cut section.

          Record your observation and inferences :

(ii) In which part of the stem is food stored.

(iii) Name two tissues used for transportation of materials in specimens G,

 (iv) List two supporting tissues present in specimen G,

(d) Make a drawing 10-12 cm long of a cut transverse section of the stem of specimen G, and label fully.

Study specimens A, B C and D carefully and use them to answer questions 1(a) to 1(d).

(a)(i) Name tne phylum to which each of specimens A and D belong. 

(ii) Name the habitat or each Specimens A and D.

 (b)(i) Name the type of reproduction common to specimens A, B, C and D.

(ii) List the method of reproduction of each of specimens A, B,C and D giving one reason each for the method of reproduction listed.

(c) In a tabular form, state three observable differences between specimens B and C.

 (d) Make a drawing 8-10 cm long of specimens A to show the essential parts and label fully.

(a)(i) What is excretion?
(ii) List the excretory organs in humans and name one waste product excreted by each organ

(B) Name the excretory organs in:
(i) insects
(ii) earthworms. 
 

(a) Describe the carbon cycle.

(b) State the functions of:
(i) nitrogen fixing bacteria
(ii) nitrifying bacteria
(iii) denitrifying bacteria; in nature. 
 

(a)(i) What is conservation?
(ii) State six factors responsible for the decline of the abundance and variety of wildlife.

(b) Outline six ways in which the government can improve the situation in (a)(ii) above.

(c)(i) What is Eutrophication?
(ii) State two causes of eutrophication.
 

(a)(i) What is ecological succession?
(ii) Describe the process of ecological succession on a bare plot of land.

(b) Explain the following terms:
(i) biosphere
(ii)population
(iii)community
(iv)ecosystem.

(c) Name one instrument each used for measuring:
(i) relative humidity
(ii) wind speed 
 

(a) What is photosynthesis?

(b) List: (i) four external factors
(ii) two internal factors; that affect the rate of photosynthesis.

(c)(i)List the major products of the light dependent stage of photosynthesis.
(ii)State the importance of each of the products listed in (c)(i) above.

(d)(i) Explain why there are no green plants at the lower depths of some lakes.
(ii) State why decomposers are important to flowering plants. 
 

(a) (i) What is respiration?
(ii) In a tabular form, state four differences between gaseous exchange and aerobic respiration

(b)(i) Explain the term residual air.
(ii) What is the importance of residula air to mammals?

(c) State four characteristic features associated with respiratory structures.

(d)(i) What is oxygen debt?
(ii) Outline three activities that can result in oxygen debt. 
 

Darwin noticed that organisms in similar habitats across the world looked alike. This illustrates

A scientist who was involved in the development of evolution theory is

Which of the following features is used by chameleons to escape predation?

The function of the drone in a colony of bees is to

Which of the following structures is only formed during cell division in animal cells?

Which of the following traits may be considered in marriage counseling?

A man’s who suffers from haemophilia marries a woman who is a carrier, what percentage of their children are likely to be haemophilie?

If a boy has blood type O and his mother has blood type A,what is the genotype of his father?

The gene that is only located on X-choromosome is said to be

When a man who is Rh-positive marries a woman who is Rh-negative, there will be incidence of

A man’s blood group is AB. What is the probability of the man giving birth to a child with blood group O?

In genetics, linkages refer to the linking of genes of the