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 1121: The best method of propagating sugarcane is by Options:
  A) Seeding sowing
  B) Layering
  C) Grafting
  D) Stem cuttings
  Show Answer
  The correct answer is D .
• Question 1122:

  Which of the following is a plant hormone responsible for promoting cell elongation and growth?

  Options:
  A) Abscisic acid
  B) Gibberellins
  C) Ethylene
  D) Cytokinins
  Show Answer
  The correct answer is B .
• Question 1123: Oxygen liberated during photosynthesis has been demonstrated to come from Options:
  A) carbondioxide
  B) air
  C) water
  D) chlorophyll
  Show Answer
  The correct answer is C .
• Question 1124: A collection of population of all living organisms that exist in a habitat is referred to as Options:
  A) niche
  B) ecosystem
  C) community
  D) environment
  Show Answer
  The correct answer is C .
• Question 1125:

  Which of the following distinguishes a butterfly from a moth?

  Options:
  A) the wings of butterfly rest horizontally but those of moth rest vertically
  B) Both are active during the day
  C) they have similar antennae
  D) the abdomen of moth is fatter than that of butterfly
  Show Answer
  The correct answer is D .
• Question 1126: One adaptation shown by hydrophytes in freshwater habitats is the Options:
  A) leaves reduced to spines
  B) poor development of roots and xylem tissues
  C) waxy cuticle on shoot surface
  D) well developed roots and supporting system
  Show Answer
  The correct answer is B .
• Question 1127: During the bending of the arm, the biceps muscles Options:
  A) contracts and the triceps muscles relaxes
  B) relaxes and the triceps muscles contracts
  C) and the triceps muscles contract
  D) and the triceps muscles relax
  Show Answer
  The correct answer is A .
• Question 1128: The most important physical factor which affects an organism living in the intertidal zone of the seashore is Options:
  A) pH
  B) salinity
  C) wave action
  D) temperature
  Show Answer
  The correct answer is C .
• Question 1129: Which of the substance listed below is a trace element of plants? Options:
  A) Potassium
  B) Sodium
  C) Copper
  D) Phosphate
  E) Nitrate
  Show Answer
  The correct answer is C .
• Question 1130: Pineapple is an example of Options:
  A) a dehiscent fruit
  B) an aggregate fruit
  C) a composite fruit
  D) a simple fruit
  Show Answer
  The correct answer is C .