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 551:

  The part of the mammalian skin involved in excretion is the

  Options:
  A) sweat glands
  B) malpighian layer
  C) sebaceous gland
  D) horny layer
  Show Answer
  The correct answer is A .
• Question 552: 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 553: The lumbar vertebra when compared with a thoracic vertebra has a Options:
  A) longer neural spines
  B) wider neural canal
  C) thicker centrum
  D) shorter transverse process
  Show Answer
  The correct answer is C .
• Question 554:

  If both parents are heterozygous for a trait. the probability that an offspring will be recessive for that trait is?

  Options:
  A) 1/2
  B) 1/4
  C) 1
  D) 3/4
  Show Answer
  The correct answer is A .
• Question 555:

  Botany is also known as

  Options:
  A) Phytology
  B) Phycology
  C) Pedology
  D) Plantophyta
  Show Answer
  The correct answer is A .
• Question 556: The kidneys of all vertebrates act as osmoregulators. This means that they Options:
  A) keep the composition of the plasma constant
  B) regulate osmotic processes
  C) control the volume of blood entering the kidneys
  D) decrease the osmotic pressure of the blood
  E) increase the osmotic pressure of blood
  Show Answer
  The correct answer is B .
• Question 557: In tapeworm, the two structure that run throughout the length of the body are the Options:
  A) nerve cord and excretory duct
  B) sperm duct and the nerve cord
  C) genital pore and the excretory duct
  D) sperm duct and the genital pore
  Show Answer
  The correct answer is A .
• Question 558:

  The bright colours of the comb and feathers in the peacock are for?

  Options:
  A) sex differentiation
  B) beauty
  C) courtship
  D) defence
  Show Answer
  The correct answer is C .
• Question 559:

  Which of the following is an example of a behavioral adaptation for survival in animals?

  Options:
  A) Sharp teeth
  B) Migration
  C) Wings
  D) Camouflage
  Show Answer
  The correct answer is B .
• Question 560: 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 .