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 1091: Organisms living in an estuarine habitat are adapted to Options:
  A) withstand wide fluctuations in temperature
  B) survive only in water with low salinity
  C) withstand wide fluctuations in salinity
  D) feed only on phytoplankton and dead organic matter
  Show Answer
  The correct answer is C .
• Question 1092:

  Swollen, bleeding gums are another common sign of which vitamin?

  Options:
  A) Vitamin K
  B) Vitamin B
  C) Vitamin C
  D) Vitamin D
  Show Answer
  The correct answer is C .
• Question 1093:

  

  Why is the part labelled 5 thicker than 6?

  Options:
  A) 5 is the left ventricle and 6 the right ventricle
  B) 6 is the left ventricle and 5 the right ventricle
  C) 5 receives blood from the left auricle and 6 from the right
  D) 5 pumps blood round the body and 6 pumps blood into the lungs
  E) 5 deals with oxygenated blood and 6 deals with deoxygenated blood
  Show Answer
  The correct answer is D .
• Question 1094: In woody plants, grass and water vapour are transported across the stems by the Options:
  A) xylem fibres
  B) medullary rays
  C) sieve tubes
  D) phloem fibres
  E) phloem parenchyma
  Show Answer
  The correct answer is A .
• Question 1095: If a ring of bark and phloem is removed from a stem, the Options:
  A) plant dies immediately
  B) plant dies after two days
  C) movement of food is not affected
  D) movement of minerals is hardly affected
  Show Answer
  The correct answer is D .
• Question 1096: The mode of nutrition of sun dew and bladder wort can be described as Options:
  A) saprophytic
  B) holozoic
  C) chemosynthetic
  D) autotrophic
  Show Answer
  The correct answer is B .
• Question 1097: Woman do not suffer from colour blindness because Options:
  A) the trait is sex-linked
  B) only men are colour blind
  C) the genes are recessive and sex-linked
  D) the genes occur on both the X and Y chromosomes
  Show Answer
  The correct answer is C .
• Question 1098:

  I. Adoption of appropriate nocturnal habits ll. Burrowing lll. Adjusting their internal body temperature. IV Possession of many sweat pores.

  Which of the above are ways in which desert animals adapt to extreme heat of the environment?

  Options:
  A) I and IV only
  B) ll and lll only
  C) l and ll only
  D) l, ll and lll only
  Show Answer
  The correct answer is B .
• Question 1099:

  

  The lime water in container B turned milky because

  Options:
  A) carbon dioxide was produced by plant
  B) during respiration carbon dioxide entered C
  C) oxygen reacts with lime water to produce milkiness
  D) soda lime did not remove carbon dioxide from air
  E) the delivery tubes were not well connected
  Show Answer
  The correct answer is A .
• Question 1100: The major site of photosynthesis in the leaf is the Options:
  A) palisade parenchyma
  B) mesophyll parenchyma
  C) upper epidermis
  D) lower epidermis
  Show Answer
  The correct answer is A .