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 311:

  

  Use the diagram above to answer this question.

  From the graph above, it can be appropriately deduced that

  Options:
  A) the body temperature in ll varies with that in l
  B) the body of temperature in l is independent of external temperature
  C) l and ll maintain constant body temperature
  D) external temperatures affect the body temperature of l and ll
  Show Answer
  The correct answer is B .
• Question 312: Bacteria inhabiting legume root nodules and which add atmospheric nitrogen to the soil are referred to as Options:
  A) Denitrifying bacteria
  B) Nitrifying bacteria
  C) Nitrogen fixing bacteria
  D) Nitrogen freeing bacteria
  E) Nitrogen putrefying bacteria
  Show Answer
  The correct answer is C .
• Question 313: Milk protein is hydrolyzed by Options:
  A) renin
  B) amylase
  C) lipase
  D) lactase
  E) pepsin
  Show Answer
  The correct answer is A .
• Question 314: What is the function of Trichocyst in paramecium? Options:
  A) Movement
  B) Defence
  C) Excretion
  D) Reproduction
  Show Answer
  The correct answer is B .
• Question 315: Normally any character shown by an organism is due to the effects of Options:
  A) hormones and chromosomes
  B) chromosomes
  C) mutation
  D) hormones and genes
  E) genes and enviroment
  Show Answer
  The correct answer is E .
• Question 316: The arrangement of ovules attached to the sides of a syncarpous ovary with a single chamber is referred to as Options:
  A) free-central placentation
  B) axile placentation
  C) parietal placentation
  D) marginal placentation
  Show Answer
  The correct answer is C .
• Question 317: The organ located within the duodenal loop in the mamal is the Options:
  A) spleen
  B) pancreas
  C) liver
  D) gall bladder
  Show Answer
  The correct answer is B .
• Question 318: A fresh Kolanut weighing 1g was put into salt solution. After 3 hour, the kolanut weighed 1.2g. This simple experiment demonstration that Options:
  A) the salt solution is more concentrated that the cell sap of the kolanut
  B) the cell sap of the kolanut is more concentrated than the salt solution
  C) the salt solution has the same concentration as the cell sap of the kolanut
  D) kolanut cell can multiply in water
  E) the kolanut lost some water molecules to the salt solution
  Show Answer
  The correct answer is B .
• Question 319: 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 320: The complex relationship between the members of a community and between the community as a whole and its physical environment is Options:
  A) Ecosystem
  B) Habitat
  C) Environment
  D) Niche
  E) Micro habitat
  Show Answer
  The correct answer is A .