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 2151:

  

  The biomass is likely to increase in the sequence

  Options:
  A) 1 → 2 → 4 → 5
  B) 1 → 3 → 4 → 5
  C) 3 → 5 → 6 →7
  D) 5 → 4 → 3 → 1
  Show Answer
  The correct answer is D .
• Question 2152: A characteristic of vertebrates that is unique to mammals is Options:
  A) the presence of pentadctyl limbs
  B) parental care
  C) the possession of scrotum
  D) pulmonary circulation
  Show Answer
  The correct answer is C .
• Question 2153: Which of the following is the direct consequence of transferring energy from one trophic level to another? Options:
  A) An increase in biomass
  B) A decrease in the efficiency
  C) An increase in the total numbers of resulting individuals
  D) A decrease in the resulting biomass
  Show Answer
  The correct answer is D .
• Question 2154: In the reproduction of mosses, water is essential because Options:
  A) they live in moist habitats
  B) they cannnot reproduce without water
  C) the male ganetes must swim to fertilize the ovum
  D) they produce spores
  Show Answer
  The correct answer is C .
• Question 2155: The rate of transpiration of a leafy shoot would be highest under Options:
  A) damp, cold, still air
  B) damp, warm, moving air
  C) dry, warm, moving air
  D) dry, cold, moving air
  E) dry, warm, still air
  Show Answer
  The correct answer is C .
• Question 2156:

  One of the following is a process of transmission of hereditary characteristics by chromosomes

  Options:
  A) Genes relating to the same character occupy identical locations on the chromosomes
  B) Separation of homologous chromosomes into four daughter cells
  C) Separation of gametes during fertilization
  D) Dictating the formation of a protein by a gene in a chromosome
  Show Answer
  The correct answer is D .
• Question 2157:

  Which type of reproduction involves the fusion of gametes from two parents?

  Options:
  A) Sexual reproduction
  B) Asexual reproduction
  C) Binary fission
  D) Budding
  Show Answer
  The correct answer is A .
• Question 2158:

  The butterfly is of great economic importance because

  Options:
  A) of it's use in scientific studies
  B) it sucks nectar from flowers
  C) it adds to the beauty of the environment
  D) it pollinates flowers of crops and other plants
  Show Answer
  The correct answer is D .
• Question 2159: When oil is poured into the breeding site of mosquitoes, it Options:
  A) deprives the larvae of water
  B) kills the adults
  C) suffocates the pupae
  D) slows doen egg development
  Show Answer
  The correct answer is C .
• Question 2160: Which of the following food substances is digested in the stomach? Options:
  A) Carbohydrate
  B) Fats and oil
  C) Fats and proteins
  D) Proteins
  E) Carbohydrates and fats
  Show Answer
  The correct answer is D .