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Vertebrates and Invertebrates

Protista, Porifera, Cnidaria: Features Practice Questions

20 free Protista, Porifera, Cnidaria: Features practice questions for the Zoology, each with the correct answer and a detailed explanation. Open any question below, or take the full set as an interactive quiz.

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All Protista, Porifera, Cnidaria: Features questions

20 questions
  1. Q1. Which specialized cell type in Porifera is responsible for creating water currents and capturing food particles?
  2. Q2. In Cnidarians, the stinging organelles used for defense and prey capture are known as:
  3. Q3. Which of the following body forms in Cnidaria is typically sessile and reproduces asexually?
  4. Q4. Sponges are classified into different classes primarily based on the composition of their:
  5. Q5. Which Protozoan group is characterized by the presence of two nuclei—a macronucleus and a micronucleus?
  6. Q6. The central cavity of a sponge, through which water flows before exiting, is called the:
  7. Q7. Cnidarians are described as 'diploblastic' because their body develops from which two germ layers?
  8. Q8. The 'contractile vacuole' found in many freshwater Protists is primarily used for:
  9. Q9. Which canal system is the most complex and efficient in sponges, characterized by highly folded walls and flagellated chambers?
  10. Q10. Obelia is a classic example of a Cnidarian that exhibits 'Metagenesis.' What does this term refer to?
  11. Q11. Which of the following is a characteristic feature of the Phylum Porifera?
  12. Q12. The locomotory organelles of the Protist group Sarcodina are:
  13. Q13. In the Cnidarian class Anthozoa (corals and sea anemones), which life stage is entirely absent?
  14. Q14. Which amoeboid cell in sponges is 'totipotent,' meaning it can differentiate into any other type of sponge cell?
  15. Q15. The gastrovascular cavity of a Cnidarian serves which two primary functions?
  16. Q16. Malaria is caused by a member of which Protozoan group?
  17. Q17. What is the function of the 'Gemmule' in freshwater sponges?
  18. Q18. Which of the following describes the nervous system of a Cnidarian?
  19. Q19. The symbiotic algae found in the tissues of many corals, providing them with nutrients via photosynthesis, are called:
  20. Q20. Which skeletal element of sponges is made of a sulfur-containing protein and gives them a 'spongy' texture?