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 621: The stage in the life history of a moth responsible for the destruction of agricultural crops is the Options:
  A) nymph
  B) imago
  C) pupa
  D) caterpillar
  Show Answer
  The correct answer is D .
• Question 622:

  A flowering plant having both the male and female flowers on the same plant is said to be

  Options:
  A) Regular
  B) Irregular
  C) Monoecious
  D) Dioecious
  Show Answer
  The correct answer is C .
• Question 623: If you cross breed a tall variety (Tt) of maize with a short variety (tt), the ratio of tall to short plants in the offspring will be Options:
  A) 2:1
  B) 1:2
  C) 1:1
  D) 1:3
  E) 3:1
  Show Answer
  The correct answer is C .
• Question 624:

  Some of the features of an animal are scales,teeth, nares, and backbone. The animal is likely to be a?

  Options:
  A) toad
  B) bird
  C) lizard
  D) rat
  Show Answer
  The correct answer is C .
• Question 625: The function of the clitellum in the earthworm is to Options:
  A) aid digestion
  B) prevent desiccation
  C) assist locomotion
  D) secrete cocoon
  Show Answer
  The correct answer is D .
• Question 626: The specific number of chromosomes in each somatic cell is represented by Options:
  A) 2^N
  B) 23
  C) 2N
  D) N
  Show Answer
  The correct answer is C .
• Question 627:

  In which of the following groups of animals are flagella and cilia found?

  Options:
  A) Flatworms
  B) Annelids
  C) Coelenterates
  D) protozoa
  E) Nematodes
  Show Answer
  The correct answer is D .
• Question 628: ‘Jointed skeleton’ is absent in the Options:
  A) Cockroach
  B) Spider
  C) Millipede
  D) Snail
  E) Dragon fly
  Show Answer
  The correct answer is D .
• Question 629:

  In the enzyme (amlyase) reactions of starch → sugar

  Starch is referred to as the

  Options:
  A) substrate
  B) product
  C) enzyme
  D) enzyme-substrate complex
  E) reaction mixture
  Show Answer
  The correct answer is A .
• Question 630: The smallest living organism which share the characteristics of both living and non-living matter are Options:
  A) bacteria
  B) fungi
  C) viruses
  D) protozoa
  Show Answer
  The correct answer is C .