Chordates and Non Chordates

1. What is the main difference between chordates and non-chordates?

Answer:

The main difference between chordates and non-chordates is that Chordates possess a notochord while non-chordates lack a notochord.

2. Do all chordates have a backbone?

Answer:

No, not all chordates have a backbone. While vertebrates have a backbone, some chordates, such as tunicates and lancelets, have a notochord but lack a true backbone.

3. What is the level of organization in chordates?

Answer:

Chordates have an organ system level of organization, which means their bodies are composed of specialized organs that perform specific functions.

4. How do aquatic chordates respire?

Answer:

Aquatic chordates respire through gills, which extract oxygen from the water.

5. What is the circulation system in non-chordates?

Answer:

Non-chordates have either an open circulatory system or no circulatory system at all. In some non-chordates, like jellyfish, a circulatory system is absent.

Difference between Chordates and Non-Chordates: Chordates and Non-Chordates are two groups of animals based on the presence or absence of a notochord. Notochord is a flexible rod-like structure that provides support. Chordates possess a notochord at some stage of their life. Non-chordates, on the other hand, lack a notochord. In this article, we will cover key distinctions between chordates and non-chordates in detail.