Animals based on backbone

Q.

Amongst the following which animal has the most advanced brain?

1. Fish

2. Earthworm

3. Cockroach

4. Snail

Q.

Amongst the following animals, which is more primitive in nature compared to the others?

1. Snake

2. Lizard

3. Shark

4. Octopus

Q. Which of the following parts of the vertebrate body arises from the mesoderm?

1. Spinal cord
2. Bony skeleton
3. Epidermis
4. Lens of the eye

Q.

On classifying animals based on the presence of a backbone, which of the following would be the odd one out?

1. Snake

2. Dolphin

3. Goldfish

4. Silverfish