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Which kingdom was added third, for unicellular microscopic life?
AProtista
BAnimalia
CPlantaeaa
DChordataa
Answer & Solution
Correct answer: A. Protista
1. Plants and animals are both multicellular.
2. Microscopes revealed single-celled organisms that fit neither.
3. Protista was added for them.
4. So the answer is Protista.
_Source: NCERT Class 9 Science, Ch 12 'Patterns in Life: Diversity and Classification'_
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