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 371:

  The blood vessel which carries blood from the alimentary canal to the liver is the?

  Options:
  A) hepatic artery
  B) hepatic vein
  C) hepatic portal vein
  D) mesenteric artery
  Show Answer
  The correct answer is C .
• Question 372: Which of the following vertebrae lacks a centrum? Options:
  A) Atlas
  B) Axis
  C) Thoracic
  D) Lumbar
  Show Answer
  The correct answer is A .
• Question 373: The mangrove swamp in Nigeria is restricted to the Options:
  A) sahel savana
  B) sudan savanna
  C) guinea savanna
  D) tropical rain forest
  Show Answer
  The correct answer is D .
• Question 374: An example of a filter -feeding animal is Options:
  A) shark
  B) butterfly
  C) whale
  D) mosquito
  Show Answer
  The correct answer is C .
• Question 375: Which of the following statement is NOT correct with respect to inhalation in mammals? The Options:
  A) intercostal muscles contract
  B) diaphragm is raised
  C) ribs are raised
  D) Pressure of the thoracic cavity decreases
  Show Answer
  The correct answer is B .
• Question 376:

  The correct sequence for the perception of smell in mammals is?

  Options:
  A) chemicals --> olfactory nerve endings --> brain
  B) dissolved chemicals --> nasal sensory cells --> brain
  C) chemicals --> mucus membrane sensory cells --> brain
  D) dissolved chemicals --> sensory cells --> olfactory nerve --> brain
  Show Answer
  The correct answer is D .
• Question 377: In an agricultural ecosystem, the biotic component consists of Options:
  A) crop, pest and beneficial insects
  B) crops, temperature and humidity
  C) pests, beneficial insects and water
  D) crops, water and soil
  Show Answer
  The correct answer is A .
• Question 378: In man, identical twins occur when Options:
  A) An ovum is fertilized by a sperm and then divide into two, each forming a separate embryo
  B) an ovum fertilized by two sperms and then divides into two, each forming an embryo
  C) two ova are fertilized at the same tine each forming an embryo
  D) two ova are fertilized by a single sperm each forming an embryo after fertilization
  E) one ovum first divides into two and each half is fertilized by a sperm before developing into an embryo
  Show Answer
  The correct answer is A .
• Question 379:

  The noticeable adaptation of the animal to it's aquatic habitat is the possession of

  Options:
  A) webbed digits
  B) four limb
  C) wide mouth
  D) large eyes
  Show Answer
  The correct answer is A .
• Question 380: The following are methods of soil conservation EXCEPT Options:
  A) contour terracing
  B) strip cropping
  C) contour ploughing
  D) mixed grazing
  Show Answer
  The correct answer is D .