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 1161: The most recently evolved structure in animals is the Options:
  A) hair
  B) cilium
  C) scale
  D) feather
  Show Answer
  The correct answer is A .
• Question 1162: Most irrigated lands often become unproductive in later years because of Options:
  A) loss of fertility
  B) increase in salinity
  C) soil erosion
  D) loss of water
  Show Answer
  The correct answer is A .
• Question 1163: If a woman's genotype is Tt Qq Rr, what would be the gene content of her eggs? Options:
  A) TQr, tqr
  B) TQR, tqr
  C) TqR, tQr
  D) tQr, TQR
  Show Answer
  The correct answer is B .
• Question 1164: The kidneys of all vertebrates act as osmoregulators. This means that they Options:
  A) keep the composition of the plasma constant
  B) regulate osmotic processes
  C) control the volume of blood entering the kidneys
  D) decrease the osmotic pressure of the blood
  E) increase the osmotic pressure of blood
  Show Answer
  The correct answer is B .
• Question 1165:
  

  The main function of the structure labelled I is to

  Options:
  A) store food for the young plant
  B) pull the young shoot above the ground
  C) store water for the seedling
  D) protect the young plumule
  Show Answer
  The correct answer is D .
• Question 1166: The tuber cassava is NOT a stem tuber because it Options:
  A) Is distended with food reserve
  B) Has an aerial shoot portion
  C) Has other structure that could be called root
  D) Lacks axillary buds
  E) Has a bark over its stored food
  Show Answer
  The correct answer is D .
• Question 1167:

  I. Onchocerciasis

  II. Schistosomiasis

  III.Salmonellosis

  IV. Meningitis

  Which of the diseases listed above are associated with water?

  Options:
  A) I and II only
  B) II, III and IV
  C) I, II and III
  D) II and IV
  Show Answer
  The correct answer is C .
• Question 1168: A plant which grows on another plant without apparent harm to the host plant is called Options:
  A) a parasite
  B) an epiphyte
  C) a saprophyte
  D) a predator
  E) a hermaphrodite
  Show Answer
  The correct answer is B .
• Question 1169: In vascular plants, the sieve tubes and companion cells are present in the Options:
  A) cambium
  B) cortex
  C) xylem
  D) phloem
  Show Answer
  The correct answer is D .
• Question 1170: The product after the union of the male and female gamete in animals is called Options:
  A) sperm
  B) egg
  C) embryo
  D) zygote
  Show Answer
  The correct answer is D .