Biology 2017 Waec Past Questions and Answers

Question 51 :

• 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 52 :

• 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

Question 53 :

• WAEC 2017

(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.

Question 54 :

• WAEC 2017

(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.