Which of the following conditions is NOT necessary for photosynthesis to take place?
ChlorophyII
Light
Carbon(II)oxide
Carbon(IV)oxide
Correct answer is C
No explanation has been provided for this answer.
One of the following is an effect of clay soil on vegetation
Supports luxuriant vegetation such as forest
Supports scanty vegetation
Does not support light vegetation
Support arid vegetation
Correct answer is A
Clay soil's effect on vegetation is that it supports light vegetation such as forest and luxuriant vegetation.
Which of the following is an example of continous variation?
Human blood groups
Sex difference in humans
Haemoglobin types
Height in humans
Correct answer is D
Continuous variations are variations that change gradually within a population e.g height in humans.
The following processes are involved during expiration in man except
The intercostal muscles relax
The thoracic cavity first increases in volume
The sternum moves inward
The ribs are moved downwards and inwards
Correct answer is B
During the respiration process in man, under the expiration process, the thoracic cavity does not increase in volume.
One of the following is not the theory of natural selection stated by Charles Dawin
Characteristics acquired through use or disuse are transmitted offspring
Variations appear by themselves in a population
Heredity variations are transmitted to offspring
Species that are the fittest for the environment contribute more offsprings to the next needs of the generation
Correct answer is A
Charles Darwins theory is that of natural selection not of use and disuse.