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 241:

  The number of plant species obtained from a population study of a garden is as follows: Guinea grass (15), Ipomoea spp (5), Sida spp (7) and Imperata spp (23)

  What is the percentage of occurrence of Imperataspp?

  Options:
  A) 35%
  B) 16%
  C) 46%
  D) 23%
  Show Answer
  The correct answer is C .
• Question 242:

  

  The point marked I is referred to as

  Options:
  A) myelin sheath
  B) dendrites
  C) axon
  D) node of Ranvier
  Show Answer
  The correct answer is D .
• Question 243:

  

  The structure labelled Y is the
  Options:
  A) food vacuole
  B) nucleolous
  C) macronucleus
  D) contractile vacuole
  Show Answer
  The correct answer is C .
• Question 244: The structural adaptation of desert plants for water conservation is Options:
  A) broad leaves with numerous stomata
  B) spongy mesophyll
  C) spiny leaves
  D) prominent stomata in leaves
  Show Answer
  The correct answer is C .
• Question 245:

  Which of the following are components of glomerular filtrate?

  Options:
  A) All the components of blood except mineral salts
  B) Water and salt only
  C) All the components of blood except plasma protein and cells
  D) Blood cells, amino acid, salts and nitrogenous wastes
  Show Answer
  The correct answer is C .
• Question 246:

  

  The structure labelled 4 is for

  Options:
  A) feeding
  B) attachment
  C) excretion
  D) respiration
  Show Answer
  The correct answer is B .
• Question 247: Which of the following statements is NOT true of insectivorous plants? Options:
  A) They obtain part of their food by trapping and feeding on insects
  B) They attract insects simply because of pollination
  C) Thay can grow in soils poor in nitrogenous salts
  D) They can supplement their nitrgen supply by feeding on insects
  E) Example include butterworts, sundews and pitcher plants
  Show Answer
  The correct answer is B .
• Question 248: The cell component that is present in a prokaryotic cell is the Options:
  A) Chloroplast
  B) Ribosome
  C) Mitochondrion
  D) Nuclear envelope
  Show Answer
  The correct answer is B .
• Question 249: Which of the following sequences is the correct arrangement of tissues in the anatomy of a young dicotyledonous stem from the inside to the outside ? Options:
  A) pith , phloem, cambium, xylem, parenchyma, collenchyma and epidermis
  B) Xylem, phloem, cambium, cortex, endodermis, collenchyma and epidermis
  C) Pith,xylem, cmbium,phloem,, collenchyma, parenchyma and epidermis
  D) phloem, xylem, cambium, cortex, endodermis, collenchyma and epidermis
  Show Answer
  The correct answer is C .
• Question 250: The part of cell that is responsible for the production of energy is Options:
  A) cell membrane
  B) cytoplasm
  C) mitochondrion
  D) nucleus
  Show Answer
  The correct answer is C .