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Multiple Choice
Which is a correct statement about prolactin?
A
It is produced by the posterior pituitary in all vertebrates.
B
It regulates the balance between salt and water in saltwater fish such as the barracuda.
C
It regulates larval development in beetles and grasshoppers.
D
It stimulates the mammary glands to produce milk in birds.
E
It controls fat metabolism and reproduction in birds.
Verified step by step guidance
1
Understand that prolactin is a hormone with diverse roles in different vertebrates, not just mammals.
Recognize that prolactin is produced by the anterior pituitary gland, not the posterior pituitary.
Identify that prolactin's role in mammals includes stimulating milk production, but this is not applicable to birds.
Acknowledge that prolactin does not regulate salt and water balance in saltwater fish or larval development in insects.
Learn that in birds, prolactin is involved in controlling fat metabolism and reproduction, which is the correct statement about its function in this context.