Waec Biology 2010 Past Questions and Answers

Question 61:

• WAEC 2010

Which of the following animals exhibits territoriality?

A. Rabbit
B. Earthworm
C. Lizard
D. Toad

Question 62:

• WAEC 2010

(a) Write the chemical equation for each of the following processes:
(i) aerobic respiration
(ii) anaerobic respiration in plants
(iii) anaerobic respiration in animals.
(b) State four functions which the liver of a patient suffering from cancer of the liver will not be able to perform.
(c) Make a diagram 8 -10 cm long of a flame cell and label fully.
(d) Name one appropriate hormone each responsible for the following conditions in plants:
(i) ripening of fruits
(ii) breaking dormancy in seeds
(iii) weed control
(iv) leaf fall.

Question 63:

• WAEC 2010

(a)(i) Name two types of germination of seeds giving one example of each type.
(ii) Describe a simple experiment to demonstrate that oxygen, water and warmth are necessary for germination of seeds.
(b) State two distinguishing features each of
(i) epiphytes
(ii) parasites
(c) Give two examples o parasitic plants.

Question 64:

• WAEC 2010

(a) Write short notes on each of the following:
(i) ecological niche
(ii) population density
(iii) climax continually
(b) Describe briefly the interactions between abiotic and biotic components of an ecosystem.

Question 65:

• WAEC 2010

(a) List four characteristics which can be genetically transmitted in humans.
(b)(i) Name two sites eac• in plants and animals where meiosis occurs.
(ii) State two differences between meiosis and mitosis
(c) A woman with blood group 'A' (heterozygous) claimed that her son who has blood group '0' was fathered by Mr. James who has blood group 'A' (homozygous). With the aid of suitable genetic diagrams
(i) prove or disprove the woman's claim
(ii) give reasons to support your answer.