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Biology Past Questions and Answers

Waec Biology Questions

Question 286:

Which of the following is not an adaptation of plants or animals to desert environment?

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A Well developed tap root system
B Small leaves with thick Epidermis
C Stems with spike-like leaves
D Metabolic waste in the form of uric acid in some animals
E Broad leaves for storage

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Question 287:

A climax community is characterised by

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A A stable composition of plant and animal species
B Rapid changes in the composition of species
C Constant changes in appearance of the habitat
D Different species occurring at different times
E Gradual change in animal population

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Question 288:

Which of the following is not a characteristic of overcrowding in plant and animal community?

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A Population outstripping available space
B Population exceeding available food
C Competition within the population
D Increase in primary production
E Population increasing at the same rate as the birth rate

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Question 289:

The use of predators or parasites to control pests in the farm is known as

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A Predator control
B Chemical control
C Biological control
D Animal control
E Parasitic control

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Question 290:

Which of the following substances cannot control the growth of harmful micro organisms?

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A Antibiotics
B Hypertonic salt solution
C Disinfectants
D Isotonic sugar solution
E Antiseptics.

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