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 711: Which of these is not an enzyme? Options:
  A) Pepsin
  B) Gastrin
  C) Amylase
  D) Chymotrypsin
  E) Trypsin
  Show Answer
  The correct answer is B .
• Question 712: In mammals, the exchange of nutrients and metabolic products occurs in the Options:
  A) lymph
  B) lungs
  C) heart
  D) liver
  Show Answer
  The correct answer is A .
• Question 713:

  Most fishes do not sink in water because of the presences of:
  I. swim bladder
  II. air bladder
  III. air sacs
  IV. air in spongy bones

  Options:
  A) II and III are correct
  B) I and II are correct
  C) I, II, III and IV are correct
  D) III and IV are correct
  Show Answer
  The correct answer is B .
• Question 714: The pollutants that contribute to the depletion of the ozone layer in the atmosphere are Options:
  A) radioactive materials
  B) oxides of sulphur
  C) oxides of carbon
  D) chlorofluorocarbons
  Show Answer
  The correct answer is D .
• Question 715:

  

  Which of the labelled parts is the venga caval opening?

  Options:
  A) 1
  B) 2
  C) 3
  D) 4
  E) 5
  Show Answer
  The correct answer is C .
• Question 716: Which of these statement below is not a characteristic of wind pollinated flower? Options:
  A) Stigmas are usually large and feathery
  B) Nectar is usually absent
  C) The pollen grains have rough spiny surfaces
  D) The flowers are not scented
  E) The pollen is light and smooth
  Show Answer
  The correct answer is C .
• Question 717:

  

  Which of the structure is the molar?

  Options:
  A) 1
  B) 2
  C) 3
  D) 4
  Show Answer
  The correct answer is A .
• Question 718:

  I. Rattus rattus II. Agama agama III. Bufo regularis IV. tilipia zilli

  The order of evolutionary advancement to the above vertebrates is

  Options:
  A) I, II, III, IV
  B) I, IV, III, II
  C) II, III, IV, I
  D) IV, III, II, I
  Show Answer
  The correct answer is D .
• Question 719: The flow of air and water in or out of the mesophyll layer of a leaf is controlled by the Options:
  A) stomata
  B) lenticels
  C) air space
  D) guard cell
  Show Answer
  The correct answer is D .
• Question 720: Muscles are indirectly attached to bones by means of Options:
  A) ligaments
  B) membranes
  C) tendons
  D) sutures
  Show Answer
  The correct answer is C .