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 1441: The organisms with the least number of individuals in a pyramid of numbers are the Options:
  A) secondary consumers
  B) tertiary consumers
  C) primary producers
  D) primary consumers
  Show Answer
  The correct answer is B .
• Question 1442: The enzyme that is present in the saliva is Options:
  A) rennin
  B) lipase
  C) pepsin
  D) ptyalin
  Show Answer
  The correct answer is D .
• Question 1443:

  Choose the sequence which represents the correct order of organisms in a food chain

  Options:
  A) Grass, snake, toad, grasshopper, hawk
  B) Grass, grasshopper, toad, snake, hawk
  C) Grass, grasshopper, snake, toad, hawk.
  D) Grass, snake, grasshopper, toad, hawk
  Show Answer
  The correct answer is B .
• Question 1444:

  The hormones secreted by pancreas serves to

  Options:
  A) Facilitate the development of facial hairs
  B) Raise the level of calcium in the blood
  C) Lower blood glucose level
  D) Make the body react to emergencies
  Show Answer
  The correct answer is C .
• Question 1445:

  

  The part labelled II is the

  Options:
  A) stigma
  B) anther
  C) filament
  D) style
  Show Answer
  The correct answer is B .
• Question 1446: The fallacy in Lamarck's evolutionary theory was the assumption that Options:
  A) traits are acquired through disuse of body parts
  B) acquried traits are heritable
  C) acquired traits are seldom formed
  D) traits are acquired through the use of body parts
  Show Answer
  The correct answer is B .
• Question 1447: A food web is more stable than a food chain because Options:
  A) it contains more organisms
  B) it has greater energy source
  C) it is not easy to destroy
  D) every organism has an alternative source
  Show Answer
  The correct answer is D .
• Question 1448: A unique characteristics of the cervical vertebrate is the presence of Options:
  A) large centrum
  B) long transverse processes
  C) zgapophysis
  D) vertebrartarial canal
  Show Answer
  The correct answer is D .
• Question 1449: One of the function of xylem is Options:
  A) strengthening the stem
  B) manufacturing food
  C) reducing loss of water
  D) conducting manufactured food
  E) storing unused sugar
  Show Answer
  The correct answer is A .
• Question 1450: 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 .