Which is not the characteristic of phylum protozoa [CPMT 1984]
A) Pseudopodia
B) Binary fission
C) Contractile vacuole
D) Cell membrane as body covering
Answers
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Explanation:
a. pseudopodia
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Concept: Characteristics of phylum protozoa
Answer: (c) Contractile vacuole is absent.
Explanation:
Locomotion in protozoa is possible with the help of pseudopodia or flagella.
Protozoa reproduce both asexually and sexually. Hence, binary fission is a common form.
Protozoa has an covering called plasma membrane that encloses the cytoplasm and cover the locomotory structures as well.
Protozoa lack contractile vacuole in them. Mostly in the marine protozoans because they are hypotonic to their environment and in order to conserve water they lack vacuole.
Hence, the correct answer is contractile vacuole is absent.
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