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Monday, 06 April 2026
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Biology Past Questions and Answers

Biology Questions

Question 136:
The digestive enzyme that coagulates proteins in milk is
  • A Ptyalin
  • B Pepsin
  • C Renin
  • D Trypsin
  • E Amylase
View Answer & Explanation
Question 137:
The hepatic portal vein is characterized by
  • A Beginning and ending with capillaries
  • B Connecting the liver and the kidney
  • C Carrying deoxygenated blood
  • D Ending with large capillaries
  • E Having no capillaries
View Answer & Explanation
Question 138:
The blood vessel which carries digested food from the small intestine to the liver is the
  • A Renal vain
  • B Renal artery
  • C Hepatic artery
  • D Hepatic portal vein
  • E Coelic artery
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Question 139:
The maize grain is regarded as a fruit and not a seed because
  • A It is covered by a sheath of leaves
  • B The testa and fruit wall fuse after fertilization
  • C It has both endosperm and cotyledon
  • D It has coleorhiza and coleoptile
  • E The pericarp and seed coat are separated
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Question 140:
Identical twins are produced under one of the following conditions
  • A Two oval fertilized at the same time by two sperm
  • B One ovum ferilized divides to give two embryos
  • C One ovum fertilized, twins formed shortly before birth
  • D Two ova fertilized by one sperm
  • E One ovum fertilized by two sperm
View Answer & Explanation