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 1081:

  

  Use the diagram above to answer this question.

  The structure that controls loss of water vapour during transpiration is labelled

  Options:
  A) l
  B) ll
  C) lll
  D) lV
  Show Answer
  The correct answer is D .
• Question 1082: If a plant homozygous for round and yellow (RR : YY), is crossed with a wrinkle green type (rr : yy) all of the resulting seeds will be Options:
  A) blue and wrinkled
  B) round and yellow
  C) wrinkled and yellow
  D) round and greenish yellow
  Show Answer
  The correct answer is B .
• Question 1083: Fibrinogen and prothrombin play important roles in the Options:
  A) deamination of proteins
  B) clotting of blood
  C) detoxication of substances
  D) storage of vitamins
  Show Answer
  The correct answer is B .
• Question 1084: 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 1085: What will happen wen two equal sized pieces of unripe pawpaw labelled X and Y are dropped into equal volumes of concentrated salt solution and distilled water respectively? Options:
  A) pawpaw X will become turgid
  B) both will increase in size
  C) pawpaw Y will become turgid
  D) both will decrease in size
  Show Answer
  The correct answer is C .
• Question 1086: Parenchyma cells are serves as supporting tissue when they Options:
  A) contain chloroplast
  B) have crystals
  C) become flaccid
  D) become turgid
  Show Answer
  The correct answer is D .
• Question 1087: In Nigeria, the guinea savanna belt borders the Options:
  A) mangrove swamps and the sahel savanna
  B) rainforests and the sudan savanna
  C) desert and the sudan savanna
  D) rainforests and the deserts
  Show Answer
  The correct answer is B .
• Question 1088:

  

  The point marked I is referred to as

  Options:
  A) myelin sheath
  B) dendrites
  C) axon
  D) node of Ranvier
  Show Answer
  The correct answer is D .
• Question 1089: In epigeal germination, the cotyledons are Options:
  A) carried above the ground by the elongation hypocotyl
  B) pulled underground by the elongating epicotyl
  C) pulled underground by the elongating epicotyl
  D) carried above the ground by the elongating epicotyl
  Show Answer
  The correct answer is A .
• Question 1090:

  Use the diagram to answer the question.

  The process of water loss and intake indicated by the arrows labelled i and ii are respectively

  Options:
  A) evaporation and osmosis
  B) osmosis and exhalation
  C) osmosis and diffusion
  D) urination and diffusion
  Show Answer
  The correct answer is B .