Question

Question A. 5.

Which of the following phylum is not belong to invertebrates?

• A. Molluscs
• B. Arthropods
• C. Amphibians
• D. Worms

Answer 1

The correct option is C

Amphibians

The correct option is C:

Explanation of the correct option :

1. Amphibian animals have vertebral column or backbone.
2. They also have internal skeleton which gives support and protection to all the internal organs.
3. Hence, Amphibians belong to vertebrates.

Explanation of the incorrect options:

Option A:

Molluscs have very soft body which is protected by a shell. They are invertebrates.

Option B:

Arthropods have chitinous exoskeleton, but they don't have any internal skeleton or backbone.

Option D:

Worms have segmented or unsegmented soft body.

Final answer: Phylum Amphibia does not belong to invertebrates.