NEET 2007 Biology question

Compared to a bull a bullock is docile because of:

(1)lower levels of adrenalin / noradrenalin in its blood
(2)higher levels of thyroxin
(3)higher levels of cortisone
(4)lower levels of blood testosteroneCorrect

Answer: (4)

Solution

A bullock is a castrated bull; removal of the testes eliminates the main source of testosterone, the male sex hormone responsible for aggression and male characteristics. The

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Question ID VK-089786