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Thursday, 01 October 2026
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Biology Past Questions and Answers

Topic: Hormonal control

Jamb Biology Questions - Hormonal control

Question 6:
The gland usually found in the position labelled I is the
  • A Adrenal
  • B Thyriod
  • C Pancreatic
  • D Pituitary
View Answer & Explanation
Question 7:
Nervous control differs from hormonal control in that the former
  • A Involves only chemical transmision
  • B Is a lower process
  • C Produces short-term changes
  • D Has no specific pathway
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Question 8:
If a nursing mother is not producing enough milk, her hormonal system is probably deficient in
  • A Prolactin
  • B Testosterone
  • C Thyroxin
  • D Insulin
View Answer & Explanation
Question 9:
From the diagram above Birth control by vasectomy is achieved by severing the structure labelled
  • A I
  • B II
  • C III
  • D IV
View Answer & Explanation
Question 10:
In the diagram, the change in the length of the neck of the giraffes shown was brought about by
  • A Geographical isolation
  • B Predation
  • C Symbiosis
  • D Natural selection
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