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 291: Plants tend to prevent overcrowding by means of efficient Options:
  A) water uptake
  B) seed germination
  C) pollination
  D) seed dispersal
  Show Answer
  The correct answer is D .
• Question 292: 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 293: Water retention is highest in soils which are rich in Options:
  A) sand, poor in humus and devoid of clay
  B) clay and sand, but poor in humus
  C) clay and humus, but poor in sand
  D) clay, poor in humus and devoid of sand
  E) sand and humus, but poor in clay
  Show Answer
  The correct answer is D .
• Question 294: At fertilization Options:
  A) one chromosome from the male joins another from the female
  B) one gene from the male combines with another from the female
  C) the male nucleus fuses with the female nucleus
  D) one set of chromosome combines with another set from the female
  E) one cell from the male fuses with another from the female
  Show Answer
  The correct answer is C .
• Question 295: Nitrogen is released into the atmosphere when ________ Options:
  A) plants absorbs mineral salt
  B) sugar is completely broken down
  C) through plant uptake
  D) when lightning strike
  Show Answer
  The correct answer is D .
• Question 296: In which of the following organisms does each cell combine the function of nutrition, reproduction and growth? Options:
  A) Rhizophus
  B) Dryopteris
  C) Brachymenium
  D) Spirogyra
  Show Answer
  The correct answer is D .
• Question 297: Th chitin in the exoskeleton of many arthropods is strengthened by Options:
  A) calcium compounds
  B) organic salts
  C) lipids
  D) proteins
  Show Answer
  The correct answer is A .
• Question 298:

  

  The flower shown above is

  Options:
  A) complete, regular, hermaphroditic with superior ovary
  B) incomplete, regular, staminate with inferior ovary
  C) complete, regular, hermaphroditic with inferior ovary
  D) incomplete, irregular, pistillate with superior ovary
  Show Answer
  The correct answer is C .
• Question 299: the larval stage of a mosquito is called Options:
  A) wriggler
  B) grub
  C) maggot
  D) caterpillar
  Show Answer
  The correct answer is A .
• Question 300: The sex of a foetus is determined during Options:
  A) meiosis
  B) copulation
  C) fertilization
  D) placentation
  Show Answer
  The correct answer is C .