Waec Biology Past Questions and Answers

Question 1731:

• WAEC 2017

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

A. Hollow bones
B. Pentadactyl limb
C. Fused thoracic bones
D. Streamlined body

Question 1732:

• WAEC 2017

Which of the following is NOT characteristic of social insects?

A. All members are identical
B. There is division of labour
C. The members dwell in the same habitat
D. Some members protect the queen

Question 1733:

• WAEC 2017

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

A. Adaptation
B. Survival
C. Organic evolution
D. Interspecific competition

Question 1734:

• WAEC 2017

(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

Question 1735:

• WAEC 2017

(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