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BIOLOGY

JAMB 2010 - Question 44

Biology 2010 JAMB Past Questions - Question 44: Thyroxine and adrenalin are examples of hormones which control

Choose the most appropriate option for the gap .

Thyroxine and adrenalin are examples of hormones which control

A: tongue rolling.

B: behavioural patterns

C: colour variation

D: blood grouping

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Correct Answer

Explanation

Thyroxine controls the rate at which glucose isoxidised in our body to release energy. the energy so released is used for growth, development and engaging in other activities depending on the age of the individual. Adrenalin takes care of our response to emergency situations. Colour variation or changes in some animals is controlled by special pigmented cells called chromatophores located on their body surface e.g. as in chameleon. blood grouping is a physiological variation controlled by three genes or alleles.