PG TRB ZOOLOGY ONLINE TEST / QUIZ AS PER LATEST SYLLABUS | Unit I - ANIMAL DIVERSITY AND PHYLOGENY | General characters and classification of fishes. Accessory respiratory organs in fishes.

PG TRB ZOOLOGY ONLINE TEST / QUIZ AS PER LATEST SYLLABUS | Unit I - ANIMAL DIVERSITY AND PHYLOGENY | General characters and classification of fishes. Accessory respiratory organs in fishes.

1. The study of fishes is known as:

a. Herpetology b. Ichthyology c. Ornithology d. Malacology

2. Which of the following is a cartilaginous fish?

a. Labeo rohita b. Hippocampus c. Scoliodon d. Clarias batrachus

3. The accessory respiratory organ in Anabas testudineus is the:

a. Swim bladder b. Labyrinthine organ c. Pharyngeal diverticula d. Buccopharyngeal epithelium

4. Which of the following is an example of a jawless fish?

a. Lamprey b. Shark c. Salmon d. Catfish

5. The body of a fish is typically divided into:

a. Head and trunk b. Head, thorax, and abdomen c. Head, trunk, and tail d. Head, neck, and trunk

6. The lateral line system in fishes is primarily for:

a. Hearing b. Chemoreception c. Sensing water movements and vibrations d. Vision

7. Which of the following is a characteristic feature of bony fishes (Osteichthyes)?

a. Cartilaginous skeleton b. Placoid scales c. Operculum covering gills d. Absence of a swim bladder

8. The accessory respiratory organ in Heteropneustes fossilis is a pair of:

a. Lung-like sacs b. Highly vascularized gill plates c. Elongated respiratory sacs d. Alveolar sacs

9. The class Chondrichthyes includes:

a. Bony fishes b. Jawless fishes c. Cartilaginous fishes d. Lungfishes

10. Who is considered the father of Ichthyology?

a. Aristotle b. Carl Linnaeus c. Georges Cuvier d. Peter Artedi

11. A homocercal tail fin is characteristic of:

a. Sharks b. Bony fishes c. Lampreys d. Coelacanths

12. The accessory respiratory organ in walking catfish (*Clarias batrachus*) is the:

a. Lungs b. Air bladder c. Arborescent organ d. Skin

13. Which type of scales are found in sharks?

a. Cycloid scales b. Ctenoid scales c. Ganoid scales d. Placoid scales

14. The term 'Agnatha' refers to:

a. Jawless fishes b. Bony fishes c. Cartilaginous fishes d. Lungfishes

15. Which fish uses its swim bladder for both buoyancy control and sound production?

a. Anguilla b. Labeo c. Silurus d. Catla

16. The fish with a snake-like body and no paired fins is:

a. Shark b. Eel c. Ray d. Trout

17. The accessory respiratory organ in lungfishes is the:

a. Skin b. True lungs c. Buccopharyngeal diverticula d. Labyrinth organ

18. The scientific name for the sea horse is:

a. Hippocampus b. Exocoetus c. Labeo d. Torpedo

19. In which class of fish are the scales absent?

a. Chondrichthyes b. Osteichthyes c. Dipnoi d. Cyclostomata

20. The spiracle in cartilaginous fishes is a remnant of the:

a. First gill slit b. Second gill slit c. Fifth gill slit d. Nostrils

21. Which fish has a poisonous sting on its tail?

a. Shark b. Ray c. Mackerel d. Eel

22. The term 'Amphibious fish' refers to fish that:

a. Live in both freshwater and saltwater b. Can live for a short time on land c. Have both gills and lungs d. Lay eggs on land

23. Which accessory respiratory organ is also known as a 'dendritic organ'?

a. Pharyngeal diverticula b. Air sac c. Arborescent organ d. Labyrinth organ

24. The presence of claspers for internal fertilization is a feature of:

a. Chondrichthyes b. Osteichthyes c. Cyclostomata d. Dipnoi

25. The fish that can generate an electric shock is:

a. Torpedo b. Labeo c. Gambusia d. Catla

26. Which of the following is an example of an armored fish?

a. Anguilla b. Syngnathus c. Scoliodon d. Ostracion

27. The fish with a modified operculum to form a lung-like chamber is:

a. Anabas b. Labeo c. Catla d. Hippocampus

28. The function of the pyloric caeca in bony fishes is:

a. Digestion and absorption b. Buoyancy c. Respiration d. Excretion

29. The term 'viviparous' in fishes means:

a. Laying eggs b. Giving birth to live young c. Fertilizing externally d. Breeding in freshwater

30. Which of the following is a representative of the class Dipnoi?

a. Shark b. Coelacanth c. Lungfish d. Tuna

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