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 1171: A mammal with red fur and long ears was crossed with another having white fur and short ears. If the offspring had a red fur and short ears, the Options:
  A) character are linked
  B) character are not linked
  C) parents are related
  D) parents are not related
  Show Answer
  The correct answer is A .
• Question 1172: When a short-sighted person views a distant object without spectacles, the image is formed Options:
  A) on the retina
  B) in front of the retina
  C) behind the retina
  D) on the blind spot
  Show Answer
  The correct answer is B .
• Question 1173: Which of the following is one of Lamarck's theories? Options:
  A) Some variations are more favourable to existence in a given environment than others
  B) All living organisms are constantly involved in a struggle to existence
  C) The size of a given population remains fairly constant
  D) New species originates through the inheritance of acquired traits
  Show Answer
  The correct answer is D .
• Question 1174: A plant parenchyma cell also acts as a supporting tissue when it Options:
  A) becomes flaccid
  B) contains crystals
  C) becomes turgid
  D) is pigmented
  Show Answer
  The correct answer is C .
• Question 1175:

  In which of the following groups of animals are flagella and cilia found?

  Options:
  A) Flatworms
  B) Annelids
  C) Coelenterates
  D) protozoa
  E) Nematodes
  Show Answer
  The correct answer is D .
• Question 1176: Which is the correct order of water loss from the leaf? 1 Mesophyll 2 Veins 3 Substomatals cavity 4 Stomata Options:
  A) 3 → 2 → 1 → 4
  B) 2 → 3 → 1 → 4
  C) 2 → 1 → 3 → 4
  D) 1 → 2 → 3 → 4
  Show Answer
  The correct answer is C .
• Question 1177: The following events take place during conjugation in spirogyra 1. The protoplasm of each of the conjugating cell separate from the cell wall to form a Gamete; the gamete of one filament passes through the conjugation tube to meet the gamete of the other filament 2. The zygote soon become surrounded by thick brown wall to become zygospore which burst after a short rest and germinate to produce a new filament 3. The nuclei of the gametes fuse to form a zygote 4. The protuberance meet and where they touch the cell-wall disappear so that a conjugation tube joining the two cell is formed 5. protuberance appear on the wall of the cell of two filament of spirogyra lying side by side opposite one another. Now what is the correct sequence in which the above sequence occur? Options:
  A) 1,2,3,4,5
  B) 1,2,4,5,3
  C) 3,4,5,2,1
  D) 5,4,1,3,2
  E) 5,4,3,1,2
  Show Answer
  The correct answer is D .
• Question 1178: In which of the features do bryophytes differ from pteridophytes? Options:
  A) Absence of flower
  B) Alternation of generation
  C) Dependency on water for reproduction
  D) Presence of vascular system
  Show Answer
  The correct answer is D .
• Question 1179: Peripherals arrangement of vascular tissues in dicots is a characteristic of the internal structure of the Options:
  A) leaf
  B) petiole
  C) stem
  D) root
  Show Answer
  The correct answer is C .
• Question 1180: 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 .