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 1661:

  

  In the diagram, Which of the following can be decided from the distribution?

  Options:
  A) species II is found only in locations where it rains all year round
  B) species III inreases in number as rainfall increases
  C) the distribution of species IV is not dependent on rainfall
  D) species I thrives under conditions of moderate to high rainfall
  Show Answer
  The correct answer is D .
• Question 1662: A tall plants crossed with a dwarf one produces offspring of which half are tall and half are dwarf. What are the genotypes of the parents? Options:
  A) TT, TT
  B) Tt, tt
  C) TT, tt
  D) Tt, Tt
  Show Answer
  The correct answer is B .
• Question 1663:

  

  Use the diagram above to answer this question.

  Insulin is produced by the endocrine organ labelled

  Options:
  A) IV
  B) III
  C) II
  D) I
  Show Answer
  The correct answer is B .
• Question 1664: The flippers of a whale and the fins of a fish are examples of Options:
  A) divergent evolution
  B) coevolution
  C) continous variation
  D) convergent evolution
  Show Answer
  The correct answer is D .
• Question 1665:

  Which of the following statements is true regarding sex-linked traits?

  Options:
  A) Sex-linked traits are located on the sex chromosomes
  B) Sex-linked traits are inherited only from the mother
  C) Sex-linked traits are more commonly observed in females
  D) Sex-linked traits are not influenced by hormonal factors
  Show Answer
  The correct answer is A .
• Question 1666: In bryophytes, sex organs are produced in the Options:
  A) protonema
  B) sporophyte
  C) gametophyte
  D) rhizoid
  Show Answer
  The correct answer is C .
• Question 1667: Which of the following is NOT true of spirogyra? Options:
  A) Reproduces by conjugation
  B) Reproduces by fragmentation
  C) Consist of branched filaments
  D) Consist of unbranched filaments
  Show Answer
  The correct answer is C .
• Question 1668: The process of transforming the chemical energy of cellular fuels into the high energy bonds of ATP in plants is Options:
  A) autotrophism
  B) photosysnthesis
  C) photolysis
  D) respiration
  Show Answer
  The correct answer is D .
• Question 1669: On what structure are the units of inheritance situated? Options:
  A) Golgi bodies
  B) Ribosomes
  C) Chromosomes
  D) Endoplasmic reticulum
  Show Answer
  The correct answer is C .
• Question 1670: For effective functioning of a bird's quill feather, hooks fit on the ridge of the Options:
  A) Vane
  B) rachis
  C) barbules
  D) barbs
  Show Answer
  The correct answer is C .