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 971: Which of the following factors can reduce the population of a community? Options:
  A) Immigration
  B) edaphic
  C) predation
  D) mutualism
  Show Answer
  The correct answer is C .
• Question 972:

  

  Using the diagram, sexual reproduction is illustrated in

  Options:
  A) ii
  B) i
  C) iii
  D) iv
  Show Answer
  The correct answer is B .
• Question 973: Leaching is Options:
  A) Washing away of humus from the soil surface
  B) reducing of soil aeration by pressure
  C) soil erosion by means other than rainfall
  D) loss of organic matter due to exposure to direct sunlight
  E) washing out chalk and limestone from upper layers of by heavy rains
  Show Answer
  The correct answer is A .
• Question 974: In the life history of butterfly, destruction of crops is caused by the Options:
  A) maggot
  B) nymph
  C) caterpillar
  D) pupa
  Show Answer
  The correct answer is C .
• Question 975: The term caryopsis is used to describe a fruit in which the Options:
  A) testa and pericarp are separate
  B) seed and endocarp are fused
  C) testa and pericarp are fused
  D) seed coat and fruit wall are impermeable
  Show Answer
  The correct answer is C .
• Question 976: Most commercial fertilizers are rich in salts of Options:
  A) sodium, iron and calcium
  B) nitrogen, phosphorus and potassium
  C) iron, copper and nitrogen
  D) calcium, sodium and phosphorus
  Show Answer
  The correct answer is B .
• Question 977:

  Which of the following features is not a characteristic of arteries? Arteries

  Options:
  A) possess valves at intervals throughout their length
  B) have thick muscular and elastic walls
  C) carry blood away from the heart
  D) transport oxygenated blood with the exception of the pulmonary artery
  Show Answer
  The correct answer is A .
• Question 978: The wings of a bat and those of a bird are examples of Options:
  A) convergent evolution
  B) continuous variation
  C) coevolution
  D) divergent evolution
  Show Answer
  The correct answer is A .
• Question 979:

  

  After circulation in the lungs, the blood returns to the left auricle through

  Options:
  A) 1
  B) 4
  C) 5
  D) 6
  Show Answer
  The correct answer is D .
• Question 980: Any dry fruit which can break into several parts each containing one seed is a Options:
  A) capsule
  B) aggregrate fruit
  C) legume
  D) schizocarp
  E) follicle
  Show Answer
  The correct answer is D .