biology MCQs – Page 2

Practise multiple-choice questions from biology for competitive examinations and subject revision. Review each marked answer and report any item that may be outdated or unclear.

biology Mcqs
21. On average there are _______ or more thylakoid per granum?
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A. 60

B. 70

C. 40

D. 50
22. From right ventricle blood is pushed into?
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A. brain

B. body

C. aorta

D. pulmonary trunk
23. The arrangement of _________ speaks of the division of labour within cell?
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A. Atoms

B. Organelles

C. Molecule

D. Subatomic particles

24. Oxygen accounts for ____ % of totals human body mass?
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A. 65%

B. 3%

C. 10%

D. 18%

25. Which is a parasitic plant?
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A. ferns

B. cuscuta

C. rose

D. mosses

26. What is the branch of biology in which structure and function of tissues are studied___________?
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A. Morphology

B. Cell Biology

C. Taxonomy

D. Histology
27. The study of fossils is called?
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A. Historical biology

B. Environmental Biology

C. Social biology

D. Palaeontology
28. Haemodialysis means cleaning of____________?
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A. Blood

B. Urine

C. Glomerular filterate

D. Coelomic fluid

29. People living in high altitudes (like mountains) usually have a _________?
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A. smaller number of White Blood Cells

B. larger number of White Blood Cells

C. larger number of Red Blood Cells

D. smaller number of Red Blood Cells

30. 95% of the cytoplasm of RBCs is____________?
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A. Enzymes

B. Other proteins

C. Salts

D. Hemoglobin
31. Which of the following is the basic unit of classification___________?
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A. Species

B. Family

C. Genus

D. Order

32. Breeders have developed new and better varieties of food items by using which technique?
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A. Biological control techniques

B. Hydroponic culture technique

C. Pasteurization

D. Genetic engineering
33. Cuticular transpiration is _____________ of total transpiration?
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A. 3-4%

B. 90%

C. 5-7%

D. 1-2%

34. According to modern system of taxonomy, living organisms have been classi?ed into?
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A. Six Kingdoms

B. Five Kingdoms

C. Two Kingdoms

D. Three Kingdoms

35. Ribosomes and DNA are also present in_________?
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A. golgi complex

B. mitochondria

C. lysosomes

D. endoplasmic reticulum

36. The word BIOLOGY has been derived from_________ word?
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A. Latin

B. Greek

C. English

D. French

37. I can break down fatty acid to succinate__________?
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A. Golgi bodies

B. Peroxisome

C. Glyoxisome

D. Lysosome

38. Viruses are considered living organisms because__________?
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A. They can be crystallized

B. They are microscopic

C. They contain DNA and can be reproduced

D. They occur in plants and animals

39. How many spiracles are present in cockroach_____________?
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A. 40

B. 10

C. 5

D. 20
40. Vaccine was first developed by_______________?
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A. Edward Jenner

B. Jaber Ibn Hayan

C. Louis Pasture

D. Aristotle