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 1761:

  Which process in the nutrient cycle converts atmospheric nitrogen into a form that plants can utilize?

  Options:
  A) Denitrification
  B) Nitrogen fixation
  C) Ammonification
  D) Nitrification
  Show Answer
  The correct answer is B .
• Question 1762: Which of the following is likely to have a higher concentration of the mitochondria? Options:
  A) Sperm cell
  B) white blood cell
  C) Egg cell
  D) Red blood cell
  Show Answer
  The correct answer is A .
• Question 1763: IF an organism obtains its food by means of haustoria, it is said to be Options:
  A) holophytic
  B) heterophytic
  C) saprophytism
  D) parasitic
  Show Answer
  The correct answer is D .
• Question 1764: Which of these food chains is NOT possible in a forest? Options:
  A) Diatom → fly → toad → snake
  B) Fly → toad → snake→ hawk
  C) Leaves → antelope → man → lion
  D) Leaves → caterpillar → bird → lion
  E) Leaves →goat → man→ lion
  Show Answer
  The correct answer is E .
• Question 1765: The enzyme that is present in the saliva is Options:
  A) rennin
  B) lipase
  C) pepsin
  D) ptyalin
  Show Answer
  The correct answer is D .
• Question 1766: Which enzymes are contained in the pancreatic juice? Options:
  A) Ptayalin, lipase and pepsin
  B) Maltase, erepsin and trypsin
  C) Renin, sucrase and lipase
  D) Amylase, lipase and trypsin
  Show Answer
  The correct answer is D .
• Question 1767: The mammalian stomach can carry out a number of processes except Options:
  A) absorption of glucose
  B) secretion of hydrochloric acid
  C) secretion gastric juice
  D) churning of food
  E) production of trypsin
  Show Answer
  The correct answer is E .
• Question 1768: The most abundant group of organisms in the animal kingdom is Options:
  A) mammalia
  B) aves
  C) annelida
  D) insecta
  Show Answer
  The correct answer is D .
• Question 1769: In an agricultural ecosystem, the biotic component consists of Options:
  A) crop, pest and beneficial insects
  B) crops, temperature and humidity
  C) pests, beneficial insects and water
  D) crops, water and soil
  Show Answer
  The correct answer is A .
• Question 1770: Hormones that help regulate blood calcium levels are produced by the Options:
  A) Adrenal
  B) thyroid
  C) pancreas
  D) parathyroid
  Show Answer
  The correct answer is D .