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 1151: The stem differs from the root in having the xylem and phloem strands Options:
  A) on the same radii
  B) scattered
  C) on alternate radii
  D) towards the pith
  Show Answer
  The correct answer is A .
• Question 1152: In a savanna ecosystem the abiotic factors include Options:
  A) legumes, temperature and sandy soil
  B) water, temperature and soil
  C) minerals, oxygen and reptiles
  D) water, soil and grasses
  Show Answer
  The correct answer is B .
• Question 1153: A gland in the human body secretes two hormones, one of which causes a disease called diabetes when there is a deficiency. Which of these organ produce the hormone? Options:
  A) spleen
  B) Parathyroid
  C) Adrenal body
  D) Thyroid
  E) Pancreas
  Show Answer
  The correct answer is E .
• Question 1154:

  In an ecosystem, the organism which changes light energy into stored chemical energy is the

  Options:
  A) Consumer
  B) Producer
  C) Decomposer
  D) Carnivore
  Show Answer
  The correct answer is B .
• Question 1155:

  Flatworms and roundworms are said to be invertebrates because?

  Options:
  A) they are small animals
  B) they can live inside the vertebrates
  C) some of them are unicellular
  D) they have no backbones
  Show Answer
  The correct answer is D .
• Question 1156: Denitrifying bacteria in nature liberate gaseous nitrogen directly from Options:
  A) ammonium salts
  B) soil nitrates
  C) thunderstorms
  D) soil nitrites
  E) plant and animal proteins
  Show Answer
  The correct answer is B .
• Question 1157:

  Plants which can survive in extremely dry places are called

  Options:
  A) Mesophytes
  B) Xerophytes
  C) Hydrophytes
  D) Angiosperms
  Show Answer
  The correct answer is B .
• Question 1158: The vector for the malaria parasite is a Options:
  A) female edes mosquito
  B) female Anopheles mosquito
  C) female culex mosquito
  D) female culex mosquito
  Show Answer
  The correct answer is B .
• Question 1159:

  

  In the diagram, the experiment demonstrates

  Options:
  A) geotropism
  B) thigmotropism
  C) phototropism
  D) hydrotropism
  Show Answer
  The correct answer is A .
• Question 1160:

  

  The experimental set-up can be used to demonstrate that

  Options:
  A) light is necessary for photosynthesis
  B) oxygen is necessary for photosynthesis
  C) photosynthesis occurs in the leaves of plants
  D) carbon (IV) oxide is necessary for photosynthesis
  Show Answer
  The correct answer is D .