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The Fundamental Unit of Life — Science STD 9 — Question

Rajasthan BoardEnglish MediumSTD 9ScienceThe Fundamental Unit of Life1 Mark
Question
Which of following organisms can be seen only under the microscope?
✓

Answer

  1. Unicellular.
Explanation:
Most unicellular organisms are of microscopic size and are thus classified as microorganisms, for example, Phytoplankton and protozoa range from about 0.001mm to about 0.25mm. Most of the multicellular organisms and vertebrates are visible to the naked eye, which means that it is possible to view them without using the microscope.

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