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 1261:

  Which component of blood is responsible for carrying oxygen to the body tissues?

  Options:
  A) Platelets
  B) White blood cells
  C) Red blood cells
  D) Plasma
  Show Answer
  The correct answer is C .
• Question 1262: In mosses the structure which performs the function of water absorption is the _________? Options:
  A) root hairs
  B) rhizoids
  C) capsule
  D) hyphae
  Show Answer
  The correct answer is B .
• Question 1263: The mode of feeding in Amoeba and Hydra is Options:
  A) heterotrophic
  B) holophytic
  C) autotrophic
  D) symbiotic
  Show Answer
  The correct answer is A .
• Question 1264: The absence of anti-diuretic hormone in humans results in Options:
  A) decreasing dehydration
  B) drastic dehydration
  C) eliminating dehydration
  D) increasing dehydration
  Show Answer
  The correct answer is D .
• Question 1265: one of the adaptation of life on trees by a monkey is its possession of digits which are Options:
  A) extensible
  B) big
  C) opposable
  D) long
  Show Answer
  The correct answer is C .
• Question 1266: The ability of the cockroach to live in cracks and crevices is enhanced by the possession of Options:
  A) wings and segmented body
  B) compound eyes
  C) claws on the leg
  D) dorso-ventrally flattened body
  Show Answer
  The correct answer is D .
• Question 1267: The following events take place during conjugation in spirogyra 1. The protoplasm of each of the conjugating cell separate from the cell wall to form a Gamete; the gamete of one filament passes through the conjugation tube to meet the gamete of the other filament 2. The zygote soon become surrounded by thick brown wall to become zygospore which burst after a short rest and germinate to produce a new filament 3. The nuclei of the gametes fuse to form a zygote 4. The protuberance meet and where they touch the cell-wall disappear so that a conjugation tube joining the two cell is formed 5. protuberance appear on the wall of the cell of two filament of spirogyra lying side by side opposite one another. Now what is the correct sequence in which the above sequence occur? Options:
  A) 1,2,3,4,5
  B) 1,2,4,5,3
  C) 3,4,5,2,1
  D) 5,4,1,3,2
  E) 5,4,3,1,2
  Show Answer
  The correct answer is D .
• Question 1268:

  Which of the following statements about viruses is true?

  Options:
  A) Viruses can reproduce outside of a host cell
  B) Viruses require a host cell to replicate
  C) Viruses possess a cellular structure
  D) Viruses are living organisms
  Show Answer
  The correct answer is B .
• Question 1269:

  Flatworms and roundworms are said to be invertebrates because?

  Options:
  A) they are small animals
  B) they can live inside the vertebrates
  C) some of them are unicellular
  D) they have no backbones
  Show Answer
  The correct answer is D .
• Question 1270: Green plants are important in the ecosystem because they are Options:
  A) primary consumers
  B) producers
  C) decomposers
  D) secondary consumers
  E) scavengers
  Show Answer
  The correct answer is B .