Biology MCQs

31. Where does the fertilization of the egg take place with the sperm?
[A] Ovaries
[B] Fallopian tubes
[C] Uterus
[D] Vagina

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32. Syphilis is a bacterial infection usually spread by __
[A] Sexual contact
[B] Wound infection
[C] Air-borne droplets
[D] None of these

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33. Which of the following species of Plasmodium don’t cause Malaria?
[A] Plasmodium piper
[B] Plasmodium vivax
[C] Plasmodium falciparum
[D] Plasmodium malaria

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34. Which of the following relationship was not studied by Mendel?
[A] Flower colour and seed colour
[B] Height and seed colour
[C] Flower colour and shape of pollen grain
[D] Height and seed coat colour

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35. The number of sex chromosomes in the zygote of humans is __
[A] 2
[B] 1
[C] 3
[D] 4

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36. Bacteria protect themselves from viruses by fragmenting viral DNA?
[A] Ligase
[B] Endonuclease
[C] Exonuclease
[D] Gyrase

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37. Which organism’s plasmid was first used to construct recombinant DNA?
[A] Cyanobacteria
[B] Bacillus subtilis
[C] Saccharomyces cerevisiae
[D] Salmonella typhimurium

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38. How many approaches are there in order to clone the complete genome?
[A] 1
[B] 2
[C] 3
[D] 4

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39. Which organ is the main digester and absorber of food?
[A] Colon
[B] Stomach
[C] Liver
[D] Small intestine

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40. In which one of the following is swim bladder absent?
[A] Cartilaginous fish
[B] Silverfish
[C] Cuttlefish
[D] Bony fish

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