Multiple choice

Which of the following statements is true about E.coli?

  1. It is a parasite present in the liver of humans.

  2. It shows syngamy and meiosis.

  3. It exhibits alternation of generation.

  4. It exists symbiotically in the colon of humans.
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D Correct answer
Explanation

E. coli is a commensal bacterium that normally exists symbiotically in the human colon (large intestine). It's not a liver parasite, doesn't undergo syngamy/meiosis (it reproduces asexually by binary fission), and doesn't show alternation of generations (a plant/algae lifecycle pattern).

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