What is the difference between arthropods and echinoderms? Which group is humans more closely related to?
Arthropods and echinoderms are both invertebrates, but they have many different features. Arthropods have jointed appendages, a hard exoskeleton, and a segmented body. Echinoderms have a water vascular system, a spiny skin, and a radial body.
Arthropods are the most diverse group of animals, with over 1 million species. They include insects, spiders, crustaceans, and millipedes. Echinoderms are a much smaller group, with only about 7,000 species. They include starfish, sea urchins, and sea cucumbers.
Humans are more closely related to arthropods than to echinoderms. Both humans and arthropods have a segmented body and jointed appendages. Echinoderms, on the other hand, have a radial body and a water vascular system.
Related Questions
What are the three main characteristics of arthropods?
- Jointed appendages, a hard exoskeleton, and a segmented body.
What are the three main characteristics of echinoderms?
- A water vascular system, a spiny skin, and a radial body.
Which group is humans more closely related to: arthropods or echinoderms?
- Arthropods.
What is the largest group of arthropods?
- Insects.
What is the largest group of echinoderms?
- Starfish.
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