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PG TRB ZOOLOGY | Unit I - ANIMAL DIVERSITY AND PHYLOGENY | Polymorphism and Metagenesis in Coelentrates.

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PG TRB ZOOLOGY ONLINE TEST / QUIZ AS PER LATEST SYLLABUS | Unit I - ANIMAL DIVERSITY AND PHYLOGENY | Polymorphism and Metagenesis in Coelentrates.

PG TRB ZOOLOGY ONLINE TEST / QUIZ AS PER LATEST SYLLABUS | Unit I - ANIMAL DIVERSITY AND PHYLOGENY | Polymorphism and Metagenesis in Coelentrates.

1. Which of the following coelenterates exhibits trimorphism, with gastrozooids, dactylozooids, and gonozooids?

2. The phenomenon of alternation of generations between the asexual polyp and sexual medusa is known as:

3. In the life cycle of Obelia, the medusa is produced from the gonozooid by the process of:

4. The stinging or defensive zooids in a polymorphic colony of a siphonophore are called:

5. What is the floating bladder found in Physalia, which helps it to drift on the water surface, called?

6. The asexual polypoid form in Obelia is the:

7. In polymorphism, the different individuals of a colony are structurally and functionally different, and are known as:

8. The nutritive zooids responsible for feeding the colony in a siphonophore are:

9. Which of the following is an example of a dimorphic coelenterate?

10. The asexual reproductive structures in a gonangium of Obelia, which give rise to medusae, are known as:

11. In metagenesis, the polyp reproduces asexually to produce:

12. The reproductive zooids in a coelenterate colony are typically called:

13. Which of the following statements about polymorphism in Coelenterates is correct?

14. The sexual medusa stage in the life cycle of Obelia is characterized by:

15. The presence of both polyp and medusa forms in the life cycle of a coelenterate is an example of:

16. The polyp of Obelia is typically protected by a chitinous exoskeleton called the:

17. In the life cycle of Aurelia, the planula larva attaches to a substratum and develops into the:

18. The gonozooid of Obelia is also known as:

19. Which of the following is not a type of zooid found in a typical siphonophore colony?

20. Metagenesis is primarily observed in which class of Cnidaria?

21. The larval stage in the life cycle of Obelia is called:

22. Which of the following is an example of a siphonophore?

23. The function of the gonozooid in a polymorphic colony is:

24. The stalk-like structure in the gonangium of Obelia, which produces medusae, is the:

25. Metagenesis is a life cycle pattern where the asexual phase is ______ and the sexual phase is ______.

26. In the life cycle of Aurelia, the strobilation process leads to the formation of:

27. Which of the following is not a part of the siphonophore colony?

28. The free-swimming medusae of Obelia are produced from the gonangia by:

29. What is the primary role of the polyp stage in the life cycle of Obelia?

30. The medusa of a coelenterate is a free-swimming form, typically responsible for:

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