Question

i. Identify the two organisms as seen under a microscope
ii. Name the phylum to which they belong and mention one of its features.
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Answer 1

Size. Bacteria are the smallest micro-organisms, ranging from between 0.0001 mm and 0.001 mm in size. Phytoplankton and protozoa range from about 0.001 mm to about 0.25 mm. The largest phytoplankton and protozoa can be seen with the naked eye, but most can only been seen under a microscope.