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 661: A man with normal haemoglobin (AA) marries a woman who has sickle-cell haemoglobin (SS). They have a child who has a sickle-cell trait. Which of the following genotypes could be associated with the child’s haemoglobin? Options:
  A) AA
  B) OO
  C) AO
  D) AS
  E) SS
  Show Answer
  The correct answer is D .
• Question 662: The theory of survival of the fittest was propounded by Options:
  A) Darwin
  B) Lamarck
  C) Linnaeus
  D) Mendel
  Show Answer
  The correct answer is A .
• Question 663: The stage in the life history of a moth responsible for the destruction of agricultural crops is the Options:
  A) nymph
  B) imago
  C) pupa
  D) caterpillar
  Show Answer
  The correct answer is D .
• Question 664: Blood platelets are important because they are Options:
  A) amoeboid and nucleated
  B) produce antitoxins
  C) produce antibodies
  D) digest harmful bacteria
  E) release thrombin for blood clothing
  Show Answer
  The correct answer is E .
• Question 665: The most important environment factor which epiphytes in the rain forest compete for is Options:
  A) water
  B) nutrients
  C) light
  D) cabinet minister
  E) space
  Show Answer
  The correct answer is C .
• Question 666: In lower plants like mosses, the structure which performs the functions of roots of higher plants is called Options:
  A) root hairs
  B) rootlets
  C) hypae
  D) rhizoids
  E) thalli
  Show Answer
  The correct answer is D .
• Question 667: The ability of an organism to live successfully in an environment is known as Options:
  A) resistance
  B) competetion
  C) succession
  D) adaptation
  Show Answer
  The correct answer is D .
• Question 668: The first step in the process of photosynthesis is the Options:
  A) activation of the chlorophyll
  B) photolysis of water
  C) reduction of carbondioxide
  D) formation of sugar
  Show Answer
  The correct answer is A .
• Question 669: Rhizopus (or mucor)obtain its food from dead organic matter extracellularly. It is said to be Options:
  A) a facultative parasite
  B) saprophyte
  C) an obligate parasite
  D) a commensal
  E) an autotroph
  Show Answer
  The correct answer is B .
• Question 670: In Mucor or Rhizopus carbohydrate is absorb in the form of Options:
  A) starch
  B) sucrose
  C) glucose
  D) glycogen
  E) arabinose
  Show Answer
  The correct answer is C .