548
Question
In Cockroach moulting is induced by secretion of
In Cockroach moulting is induced by secretion of
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Solution
The correct option is A Prothoracic gland
When an immature insect has grown sufficiently to require a larger exoskeleton, sensory input from the body activates certain neurosecretory cells in the brain. These neurons respond by secreting brain hormone which triggers the corpora cardiaca to release their store of prothoracicotropic hormone (PTTH) into the circulatory system. This sudden "pulse" of PTTH stimulates the prothoracic glands to secrete molting hormone.So the correct answer is 'Prothoracic gland'.
When an immature insect has grown sufficiently to require a larger exoskeleton, sensory input from the body activates certain neurosecretory cells in the brain. These neurons respond by secreting brain hormone which triggers the corpora cardiaca to release their store of prothoracicotropic hormone (PTTH) into the circulatory system. This sudden "pulse" of PTTH stimulates the prothoracic glands to secrete molting hormone.
So the correct answer is 'Prothoracic gland'.
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