Multiple choice

Place a moist bread near your window, you will observe small black round structures growing on it. What is that?

  1. The dust gets accumulated in the pores.

  2. Microorganisms

  3. The colour of flour changes due to exposure to atmosphere.

  4. None of these
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

 Yes, it is correct. As microorganisms are present everywhere (in water, air, and soil). In fact, micro-organisms can survive under all types of environment. The black round structure seen growing when observed under microscope was found to be microorganisms.

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