Biology MCQs

31. Which of the following is totally impossible outcome of Mendel’s Experiment?
[A] 3 tall 1 short plant
[B] 24 tall and 8 short plants
[C] 8 tall and 0 short plants
[D] 4 tall plants and 1 medium height plant

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32. Which of the following is an oncogenic trait?
[A] a type of trait whose phenotype is influenced by more than one gene
[B] a trait produced by the effect of a gene or an allele.
[C] a gene that has the potential to cause cancer.
[D] None of these

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33. Blue-Green algae are __
[A] Symbiotic Nitrogen-Fixing Cyanobacteria
[B] Free-Living Nitrogen-Fixing Bacteria
[C] Loose Association of Nitrogen-Fixing Bacteria
[D] Symbiotic Nitrogen-Fixing Bacteria

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34. Epidermal cells of which part of plant often secrete a waxy water resistant layer on their outer surface?
[A] Aerial parts only
[B] Roots only
[C] Both aerial parts and roots
[D] Neither aerial parts nor roots

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35. Activity of an enzyme can be modulated by change of
____:
[A] pH
[B] Light
[C] Humidity
[D] Rainfall

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36. Which of the following is an example of Ball and Socket joint in humans?
[A] Hip Joint
[B] Neck Joint
[C] Wrist Joint
[D] Finger Joint

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37. Which enzyme digests proteins in the stomach?
[A] Salivary amylase
[B] Trypsin
[C] Pepsin
[D] Pancreatic canal

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38. With regard to kidneys and its functions, which of the following statements is not correct?
[A] Each nephron has two parts – the glomerulus and the renal tubule
[B] They maintain water balance and expel metabolic waste
[C] Their basic functional units are called nephrons
[D] Reptiles have relatively more nephrons than birds

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39. Normally how many times the human heart beats in a minute?
[A] 72
[B] 75
[C] 82
[D] 85

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40. ___ is the study of viruses:
[A] Mycology
[B] Protozoology
[C] Virology
[D] Parasitology

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