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 31: when the two alleles present in an organism are of the same type, the genotype is described as Options:
  A) heterozygous
  B) heterogamous
  C) homozygous
  D) homologous
  Show Answer
  The correct answer is C .
• Question 32: The major function of contractile vacuole in amoeba is Options:
  A) to secrete enzyme to digest food particles
  B) to store excess food materials
  C) to excrete nitrogenous waste
  D) to absorb water from the surrounding
  E) to collect and expel water in the cytoplasm
  Show Answer
  The correct answer is E .
• Question 33: A soil consisting of alumina and iron (II)oxide is known as Options:
  A) loamy soil
  B) clayey soil
  C) laterite
  D) podzol
  Show Answer
  The correct answer is C .
• Question 34: Millet , sorghum, maize and onions are common crops growth in Nigeria in the Options:
  A) tropical rainforests
  B) sudan savanna
  C) montane forests
  D) sahel savanna
  Show Answer
  The correct answer is B .
• Question 35:

  

  The grand period of growth is represented by

  Options:
  A) N
  B) M
  C) L
  D) K
  Show Answer
  The correct answer is A .
• Question 36: If a nursing mother is not producing enough milk, her hormonal system is probably deficient in Options:
  A) prolactin
  B) testosterone
  C) thyroxin
  D) insulin
  Show Answer
  The correct answer is A .
• Question 37: Which of the following characterizes the white mangrove? Options:
  A) Prop roots
  B) Buttress roots
  C) Breathing roots
  D) Stilt roots
  Show Answer
  The correct answer is C .
• Question 38: The activity of ptyalin is likely to decrease with an increase in the concentration of Options:
  A) oxygen
  B) starch
  C) protein
  D) acid
  Show Answer
  The correct answer is D .
• Question 39:

  

  The correct figured sequence for the following labeled parts (stigma, ovary wall, embryo sac, integument and micropyle) is

  Options:
  A) 12453
  B) 24135
  C) 21435
  D) 14325
  E) 31425
  Show Answer
  The correct answer is C .
• Question 40: In which part of the human body does the secretion of the growth hormone occur? Options:
  A) Head region
  B) Waist region
  C) Neck region
  D) Gonads
  Show Answer
  The correct answer is A .