Question

4(a)(i) What are conservation laws?
(ii) State three conservation laws.
(b)(i) State two reasons why animals are poached.
(ii) Name five animals that are commonly poached.
(c) State four effects of excessive use of the forest.
(d) Explain briefly the following terms: (i) blood transfusion; (ii) antigen.

Accepted Answer

(a)(i) A conservation law states that a particular parameter of a system does not change as the system evolves over time.
(ii) Conservation laws: Law of conservation of matter; Law of conservation of energy.

(b)(i) Reasons animals are poached: Food requirement/for adventure; Medicinal values of some animal parts; Cultural and religion's views.
(ii) Animals commonly poached: Tigers; Rhinos; Gorillas; Elephants; Sea turtles; Amur leopard; African pangolins.

(c) Effects of excessive use of the forest: Habitat destruction of wild animals; Climate change; Desertification; Soil erosion; Flooding.

(d)(i) Blood transfusion is the transfer of blood or a blood component from one healthy person (a donor) to a sick person (a recipient).
(ii) An antigen is a molecule that initiates the production of an antibody and causes an immune response.

WAEC Biology 2022 Theory — Question 4

Sign up free to unlock