Biology JAMB, WAEC, NECO AND NABTEB Official Past Questions

Study specimen R and answer questions 4(a) to 4(c).

(a) (i) Name the phylum of specimen R. (ii) State two reasons for the answer in 4(a)(i).

(iii) State the habitat of specimen R. (b) (i) State two structural features that adapt specimen R to its habitat. (ii) State three ways in which specimen R is of economic importance.

(c) Make a drawing,8cm- 10cm long of the dorsal view of specimen R and label fully.

Study specimens S and T and answer questions 4(d) to 4(e).

(d) What type of fruits are specimens S and T?

(e) (i) State four observable differences between specimens S and T.

(ii) State three observable similarities between specimens S and T.

Study specimens C, D and E carefully and answer questions 1(a) to 1(C).

(a) (i) Name the phylum to which specimens C and E belong. (ii) State two reasons for the answer in 1(a)(i).

(b) State three observable structural differences between the following specimens. (i)C and D (ii) C and E.

(C) What is the relationship between specimens C and D?

(d)(i)) Name the habitat of specimen D. (ii) State two ways in which specimen D is adapted to its habitat.

(C) Make a drawing, 8cm – 10cm long of the dorsal view of specimen C and label fully.

Study specimens F and G carefully and answer questions 2(a) and 2(b).

(a) State three observable features of biological importance in: (i) specimen F; (ii) Specimen G.

(b) (i) Classify specimens F and G as either stem tuber or root tuber. (ii) Give two reasons each for the answer in 2(b)(i).

Study specimens H and J and answer questions 2(c) to 2(e).

(C) Classify specimens H and J into the class to which both belong.

(d) (i) state four observable differences between specimens H and J. (ii) State four observable similarities between specimens H and J.

 (e) (i) State the feeding habits of each of specimens H and J. (ii) Name two observable features used for feeding in specimen J.

(a) Explain briefly the process of perceiving smell in humans.

(b) State the adaptive features of the egg of a domestic fowl

(c) (i) What are autotrophs?
(ii) Name two unicellular organisms that are autotrophs

(d) State five functions of the World Health Organisation

(e) Name two example each of plants and animals that live in a freshwater pond.

(f) In the table below, state five differences between the skin of a mammal and the epidermis of a leaf.

(g) A farmer has two plots of land; plots A and B. on Plot A the farmer planted several seeds of maize. On plot B, the farmer planted several seeds of maize and pepper in a small area. What type of competition would be observed on
(i) Plot A 
(ii) Plot B

 (a) A child belongs to blood group 0 and the mother be-longs to group B. With the aid of genetic cross, state the possible blood groups of the father.

 (b) (i) Name two forms of adaptive communication in animals

(ii) State two reasons why organisms communicate with one an-other.

(a) Name one instrument used for collecting:

(i) soil organism from a soil sample

(ii) tiny insects from a leaf or a stem.

(b) make a diagram 6 cm – 8 cm long of the instrument named in (a)(ii) above and label fully.

(c) Explain briefly the relationship between three examples of symbiotic organisms.
 

(a) State four characteristics of enzymes

(b) (i) List two digestive enzymes produced in the duodenum of humans

(ii) Name the substrate that each enzyme listed in 2(b)(i) acts on.

(iii) State the products of each enzyme activity in 2(b)(ii)

(c) (i) State one way in which chlorophyll is important in plants

(ii) Name two macroelements that are required for the formation of chlorophyll in plants.

(iii) State one deficiency symptom of each macroelement named in 2 (c) (ii) above

(d) Outline the proce-dure used for testing for starch in a leaf 
 

(a) (i) What is classification of living things?

(ii) Name the scientist that developed the Binomial Sys-tern of Classification

(iii) State three reasons why it is necessary to classify living things

(iv) List seven major groups into which taxonomists classify living things in order of hierarchy

(b) state two features each which viruses have in common with: (i) living things

(ii) non-living things

(c) Name two viral disease each of:
(i) plants

(ii) humans 
 

The gradual cumulative, adaptive and heritable changes in an organism over a long period of time resulting in new species is called

Which of the following is NOT characteristic of social insects?

One of the structural adaptations of mammals for movement on land is the development of the

Which of the following statements is true about mutation?

Assuming that A is the gene for normal skin color and is dominant, while a is the gene for albinism and its recessive, what is the likely genotype of the couple which had 50% normal and 50% albino offspring?

An apple plant can produce sexually and asexually and it has 40 chromosomes in its leaf cells. How many chromosomes would be in each gamete and somatic cell?

Which of the following characters is not a morphological variation?

The type of variation illustrated above is

Which of the following resources cannot be renewed?

Which of the following practices is not used in conserving water?

The establishment of game reserves and parks is a method of

Which of the following pairs of organisms is in a mutualistic relationship?

Which of the following materials is not easily biodegradable?