Assertion :Whittaker did not include unicellular green algae in protista. Reason: Distinction between unicellular and multicellular organisms is not possible in case of algae.

Both Assertion and Reason are correct and Reason is the correct explanation for Assertion.

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Both Assertion and Reason are correct but Reason is not the correct explanation for Assertion.

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Assertion is correct but Reason is incorrect.

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Both Assertion and Reason are incorrect.

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Solution

The correct option is D Both Assertion and Reason are incorrect.
R. H. Whittaker proposed the five kingdom classification in the year 1969. This system classifies the organisms into five kingdoms, Monera, Protista, Fungi, Plantae and Animalia. All the unicellular eukaryotic organisms are placed under the kingdom Protista. Here, all unicellular algae were placed in Protista while multicellular algae were grouped into Plantae.
Thus, the correct answer is option D.

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