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प्रश्न
Write a short answer.
What is an exoskeleton? How is it different from a backbone?
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उत्तर
The exoskeleton is a tough outer covering of an animal body. e.g. Crab, lobster have exoskeletons.
Exoskeleton
- It is a rigid external covering of the body that provides support and protection to the body.
- It is present in invertebrates.
- Examples: Crab, lobster, spiders, scorpions, etc.
- It is in the form of a shell, or scales or feathers, etc.
Backbone
- It is an internal skeleton (endoskeleton) that provides support and protection to the body.
- It is a present invertebrate.
- Examples: Humans, fish lions, dogs, etc.
- It is made up of a number of vertebral joined to form a vertebral column.
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संबंधित प्रश्न
Tick (✓) the appropriate answer:
Identify the aquatic animal with scaly skin which breathe with gills
Fill in the blank.
A ................. has an external coiled shell.
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The backbone of vertebrates is made up of a number of small bones called .....................
State if the following statement is true or false. Correct the statement if it is false.
Arthropods have a soft, outer covering called endoskeleton.
Find the odd one out. Give reason.
frog, shark, seahorse, carp
Find the odd one out. Give reason.
snake, alligator, eel, turtle
Write a short answer.
Write two examples of myriapods.
Write a short answer.
How are the bones of birds different from those of other vertebrates?
Answer in detail.
Write two characteristics of the reptiles.
Mention any one major similarity and one major difference in the following pairs of an animal:
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