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 1321: Which of these is not a function of the mammalian skin/ Options:
  A) Protection against bacteria infection
  B) Excretion of waste and water
  C) Production of vitamin d when exposed to sun light
  D) production of pigments to reduce temperature
  E) Regulation of body temperature
  Show Answer
  The correct answer is D .
• Question 1322:

  The waste product of insects is?

  Options:
  A) uric acid
  B) urine
  C) Mucilage
  D) sweat
  Show Answer
  The correct answer is A .
• Question 1323: The organism that has a hydrostatic skeleton is Options:
  A) Tilapia
  B) Hydra
  C) mosquito larva
  D) earthworm
  Show Answer
  The correct answer is D .
• Question 1324: In a bakery, yeast is added to flour to make bread rise. This is possible because yeast produces Options:
  A) alcohol
  B) oxygen
  C) carbon dioxide
  D) energy
  E) ethanol
  Show Answer
  The correct answer is C .
• Question 1325: Which of the following is NOT true of wind-pollinated flowers? Options:
  A) A large amount of pollen produced
  B) Light smooth pollen grains
  C) Small inconspicuous flowers
  D) Scented petals
  E) Large pendulous anther
  Show Answer
  The correct answer is D .
• Question 1326: The two keys cation involved in the action potential of nervous transmissions are Options:
  A) Na⁺ an Fe²⁺
  B) Mg²⁺ and K⁺
  C) Na⁺ and K⁺
  D) Fe²⁺ and Mg²⁺
  Show Answer
  The correct answer is C .
• Question 1327: Mycorriza is an associationn between fungi and Options:
  A) protozoans
  B) Roots of higher plants
  C) Bacteria
  D) Filamentous algae
  Show Answer
  The correct answer is B .
• Question 1328: The veins of the leaf are formed by the Options:
  A) vascular bundles
  B) cambium cells
  C) palisade tissue
  D) spongy mesophyll
  Show Answer
  The correct answer is A .
• Question 1329: 28 g soil sample was heated to a constant weight of 24 g. When further heated to red hot and cooled, it weighed 18 g. What is the percentage of humus in the soil? Options:
  A) 22.2
  B) 55.6
  C) 75.0
  D) 25.0
  E) 35.7
  Show Answer
  The correct answer is A .
• Question 1330: If a flower is protandrous then it Options:
  A) must be unisexual
  B) has an undeveloped androecium
  C) has no androecium
  D) must be insect-pollinated
  E) can prevent self pollination
  Show Answer
  The correct answer is E .