Question : Which one of the following pairs belongs to cartilaginous fish?
Option 1: Shark and Tuna
Option 2: Shark and Ray
Option 3: Shaktes and Hilsa
Option 4: Ray and Eel
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Correct Answer: Shark and Ray
Solution : The correct option is Shark and Ray
Cartilaginous Fish (Chondrichthyes) have skeletons made of cartilage, which is a tough, flexible tissue (similar to the material in your nose and ears) rather than true bone. This group includes sharks, rays, and skates. Sharks have sharp, replaceable teeth and are known for their cartilaginous skeletons. Rays have flattened bodies and often have a disc-like shape, while skates are similar but smaller and more kite-shaped. Other fishes like eel, hilsa, tune are Bony Fish (Osteichthyes).
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Question : Which one of the following is not a true fish?
Option 1: Shark
Option 2: Starfish
Option 3: Eel
Option 4: Seahorse
Question : Which one of the following creatures has maximum number of ribs?
Option 1: Crocodile
Option 2: Snake
Option 3: Ray fish
Option 4: Flying fish
Option 1: sliver fish
Option 2: Saw fish
Option 3: Hammer fish
Option 4: sucker fish
Question : Which one of the following is related to Silviculture?
Option 1: Culture of Hilsa
Option 2: Culture of silver carp
Option 3: Culture of oil - producing plants
Option 4: Forest crops
Question : Which one of the following pairs in not correctly matched ?
Option 1: Hevea Tree - Brazil
Option 2: Sumatra - Indonesia
Option 3: Kajan River - Borneo
Option 4: Dekke Toba fish - Brazil
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