Directions: In the following questions a statement of Assertion (A) i...
Assertion and Reasoning Question Explanation:
Assertion: Unicellular algae been not kept in kingdom Protista by Whittaker.
Reason: A distinction between unicellular and multicellular organisms is not possible in case of algae.
Explanation:
• Whittaker proposed the five-kingdom classification of living organisms, which are Monera, Protista, Fungi, Plantae, and Animalia.
• Unicellular algae can be found in both kingdom Protista and Plantae, based on their photosynthetic pigments and cell wall composition.
• But, according to the five-kingdom classification, Whittaker placed unicellular algae in the kingdom Plantae because of their photosynthetic ability.
• The reason for not placing unicellular algae in the kingdom Protista is not the difficulty in distinguishing unicellular and multicellular organisms in algae.
• The reason is that the kingdom Protista includes a diverse group of organisms that do not fit into other kingdoms, such as protozoans, slime molds, and water molds.
• Hence, the given assertion is true, and the reason is also correct, but it does not explain the assertion.
• Therefore, the correct answer is option A.
Assertion: Unicellular algae been not kept in kingdom Protista by Whittaker.
Reason: A distinction between unicellular and multicellular organisms is not possible in case of algae.
Correct Answer: A (Both Assertion (A) and reason (R) are true and reason (R) is the correct explanation of Assertion (A))
Directions: In the following questions a statement of Assertion (A) i...
A distinction between unicellular and multicellular organisms is not possible in case of algae. It is because of this unicellular green algae have not been included in kingdom Protista by Whittaker. Unicellular algae forms are placed in kingdom Protista but unicellular green algae are placed in Kingdom Plantae and not included in Protista due to their resemblance with other green algae.
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