Biology Exam Past Questions and Answers | JAMB, WAEC and NECO

Biology is the study of life and living things. It can be divided into different areas that look at the structure, function, anatomy, and behavior of organisms.

• Question 1:

  The correct sequence for the perception of smell in mammals is?

  Options:
  A) chemicals --> olfactory nerve endings --> brain
  B) dissolved chemicals --> nasal sensory cells --> brain
  C) chemicals --> mucus membrane sensory cells --> brain
  D) dissolved chemicals --> sensory cells --> olfactory nerve --> brain
  Show Answer
  The correct answer is D .
• Question 2:

  The study which involves the inter-relationship between groups of organisms or species of organisms living together in an area is

  Options:
  A) Autecology
  B) Ecological niche
  C) Synecology
  D) Ecosphere
  Show Answer
  The correct answer is C .
• Question 3: Urea is produced in the Options:
  A) Liver
  B) Bladder
  C) Spleen
  D) Kidneys
  E) Gall bladder
  Show Answer
  The correct answer is A .
• Question 4:

  Which of the following statement describes an autonomic nervous system

  Options:
  A) It always stimulates effectors
  B) Activities are voluntary
  C) It dials with external stimuli and their responses
  D) It affects glands, cardia muscles and smooth muscles
  Show Answer
  The correct answer is D .
• Question 5: An onion is a bulb because it Options:
  A) has a tuberous stem
  B) has a reduced stem and thick fleshy leaves
  C) has adventitous roots
  D) bears many buds at the nodes
  Show Answer
  The correct answer is B .
• Question 6: a potometer was used to compare the rate of loss of the same volume of water from a plant under different environmental conditions as under a fan, at the sea shore, under the sun, in the airy laboratory and in cupboard. What time was likely to have been obtained in a cupboard? Options:
  A) 15 secs
  B) 30secs
  C) 25secs
  D) 20secs
  E) 28secs
  Show Answer
  The correct answer is B .
• Question 7:

  Which of the reproductive system in mammals secretes a part of the seminal fluid which raises the pH of the fluid in the female reproductive system?

  Options:
  A) Cowper's gland
  B) Prostate gland
  C) Vas deferens
  D) Seminal Vesicle
  Show Answer
  The correct answer is A .
• Question 8: Plant growth can be artificially stimulated by the addition of Options:
  A) gibberellin
  B) kinin
  C) abscisic acid
  D) ethylene
  Show Answer
  The correct answer is A .
• Question 9:

  

  In the diagram, the part labelled I is the

  Options:
  A) nuclear membrane
  B) cell wall
  C) endoplasmic recticulum
  D) plasmellema
  Show Answer
  The correct answer is D .
• Question 10: Parental care is exhibited by Options:
  A) snails
  B) earthworms
  C) birds
  D) toads
  Show Answer
  The correct answer is C .