Which Protozoan group is characterized by the presence of two nuclei—a macronucleus and a micronucleus?
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Correct answer: Ciliophora
Ciliates, like Paramecium, exhibit nuclear dimorphism. The macronucleus handles day-to-day metabolic functions, while the micronucleus is involved in genetic recombination during conjugation.
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More Protista, Porifera, Cnidaria: Features questions
- The central cavity of a sponge, through which water flows before exiting, is called the:
- Cnidarians are described as 'diploblastic' because their body develops from which two germ layers?
- The 'contractile vacuole' found in many freshwater Protists is primarily used for:
- Which canal system is the most complex and efficient in sponges, characterized by highly folded walls and flagellated chambers?
- Obelia is a classic example of a Cnidarian that exhibits 'Metagenesis.' What does this term refer to?
- Which of the following is a characteristic feature of the Phylum Porifera?