NCERT Important Questions Class 9 Science biology Chapter 7
Important NCERT Extra Questions
Chapter 7 Diversity in Living Organisms
NCERT Book Extra Questions for Session 2022-2023
CBSE Board and UP Board Others state Board
Endoskeleton of fishes are made up of cartilage and bone. Classify the following fishes as cartilaginous or bony: Torpedo, Sting ray, Dog fish, Rohu, Angler fish, Exocoetus.
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(i) Cartilaginous endoskeleton, e.g, Torpedo, Sting ray, Dog fish.
(ii) Bony endoskeleton, e.g Rohu, Angler fish, Exocoetus.