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 381: If both parents are heterozygous for a trait, the probability that an offspring will be recessive for that trait is Options:
  A) $\frac{1}{2}$
  B) $\frac{3}{4}$
  C) $\frac{1}{4}$
  D) 1
  Show Answer
  The correct answer is C .
• Question 382: In man, spermatozoa are never found in the Options:
  A) testis
  B) urethra
  C) epididymis
  D) prostrate glands
  E) vas deferens
  Show Answer
  The correct answer is D .
• Question 383:

  Which of the following is a behavioural adaptation that protects prey from predators?

  Options:
  A) Hibernation
  B) Shedding of leaves
  C) Secreting irritating fluid
  D) Dormancy
  Show Answer
  The correct answer is C .
• Question 384: In snails, the hard calcareous shells are secreted by the Options:
  A) radula
  B) ctenidium
  C) pneumostome
  D) mantle
  Show Answer
  The correct answer is D .
• Question 385: The structure found only in the plant cells are Options:
  A) cell membrane and cytoplasm
  B) chromatin and nucleolus
  C) cell wall and chloroplast
  D) cell membrane and lysosome
  Show Answer
  The correct answer is C .
• Question 386: In the standard experiment to show that oxygen is given off during photosynthesis, sodium bicarbonate is used to Options:
  A) neutralize the acid in water
  B) supply mineral salt to water plant
  C) supply carbondioxide for photosynthesis
  D) kill micro-organisms in water
  Show Answer
  The correct answer is B .
• Question 387:

  The sum total of all observable features of an organism is?

  Options:
  A) phenotype
  B) heterozygous
  C) genotype
  D) homozygous
  Show Answer
  The correct answer is A .
• Question 388: Which of the following scenarios is an example of cohesion? Options:
  A) Water molecules stick to the surface of a mirror.
  B) Water sticks to the walls of blood vessels.
  C) Water molecules stay on the tip of a pine needle because the water is attracted to the surface of the needle.
  D) Water molecules stick to one another and form a bead
  Show Answer
  The correct answer is D .
• Question 389: The function of ribosomes in cell is Options:
  A) protein synthesis
  B) starch synthesis
  C) transport of materials
  D) lipid storage
  Show Answer
  The correct answer is A .
• Question 390:

  Which of the following are components of the skeletal system in humans?

  Options:
  A) Cartilage and blood vessels
  B) Ligaments and tendons
  C) Muscles and nerves
  D) Bones and joints
  Show Answer
  The correct answer is D .