Question

Which of the following possess a backbone?

• A. Crab
• B. Monkey
• C. Spider
• D. Starfish

Answer 1

The correct option is B

Monkey

The correct option is B (monkey):

Explanation of the correct answer:

1. The backbone is made up of several small bones joined together inside the body. They are called vertebrae.
2. Monkey comes under the vertebrae category and in the Mammalia group. They have a backbone inside the body, give birth to young ones, and their bodies are covered with hair.

Explanation of incorrect answer:

Crab:

• Crabs are invertebrates. They have jointed legs, so they are called arthropods.
• They have segmented bodies and have a tough outer covering called an exoskeleton.

Spider:

• Spider is also an arthropod, sub-category- Arachnida. They have a fused head and thorax, and four pairs of legs.

Starfish:

• Starfish comes under the category Echinodermata and is invertebrate.
• They have segmented bodies, they are free-living marine animals living on the sand at the bottom of the sea.

Final answer: Monkeys possess a backbone.