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 481:

  In demonstrating the importance of mineral elements in plants, the culture bottle must be darkened to?

  Options:
  A) prevent algal growth in culture solution
  B) allow root growth
  C) prevent breakdown of mineral elements
  D) prevents photosynthesis in the root
  Show Answer
  The correct answer is A .
• Question 482: The distribution of plants in a rain forest is governed mainly by Options:
  A) vegetation
  B) soil types
  C) amount of sunlight
  D) rainfall pattern
  Show Answer
  The correct answer is D .
• Question 483: When spirogyra cell is immersed in a salt solution more concentrated than its cell sap, it Options:
  A) Remains unchanged
  B) Takes up water an burst
  C) Absorbs a little water
  D) Loses water and shrivels
  E) Becomes turgid
  Show Answer
  The correct answer is D .
• Question 484: The farmer cannot check soil erosion effectively by Options:
  A) Constructing is ridges of planting across the slope
  B) Cultivating cover crops
  C) Practising strip farming
  D) Clearing the land of vegetation
  E) Constructing terraces
  Show Answer
  The correct answer is D .
• Question 485: In the whistling pine, leaves are reduced to brown scales and young stems are green. This is an adaptation for Options:
  A) obtaining food
  B) conserving nutrients
  C) storing water
  D) reducing transpiration
  Show Answer
  The correct answer is D .
• Question 486: Which of the following is an example of carnivorous plant? Options:
  A) hydra
  B) bladderwort
  C) yeast
  D) spirogyra
  Show Answer
  The correct answer is B .
• Question 487: A pollutant that is mostly associated with acid rain is Options:
  A) Nitrogen (IV) Oxide
  B) Ozone
  C) Fluorine
  D) Carbon (IV) Oxide
  Show Answer
  The correct answer is A .
• Question 488: The dental formula 13/3 c1/1 pm4/4 m2/3 is that of a Options:
  A) goat
  B) rabbit
  C) man
  D) dog
  Show Answer
  The correct answer is D .
• Question 489: The center for controlling body temperature in the brains is the Options:
  A) cerebrum
  B) cerebellum
  C) medulla
  D) hypothalamus
  Show Answer
  The correct answer is D .
• Question 490: 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 .