GK
GENERAL SCIENCE
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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Fish ____ backbones.
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have
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do not have
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Either A or B
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None of the above
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Explanation:
Detailed explanation-1: -There are two types of fish that have vertebral columns: cartilaginous fish, which have a skeletal structure made of cartilage, and bony fish, who have actual bones. Nearly every fish has a backbone, with the only exception being the hagfish, which have something called a notochord.
Detailed explanation-2: -Most fish swim by pushing their body against the water. They have a flexible backbone lined with large, powerful muscles, so their whole body can bend into S-shaped curves.
Detailed explanation-3: -Lancelets, lampreys and hagfish They do not have a backbone, but they are supported by a jelly-like rod.
There is 1 question to complete.