Which of the following is NOT a characteristic of the phylum Echinodermata? (202
Practice Questions
Q1
Which of the following is NOT a characteristic of the phylum Echinodermata? (2022)
Radial symmetry
Water vascular system
Presence of a notochord
Tube feet
Questions & Step-by-Step Solutions
Which of the following is NOT a characteristic of the phylum Echinodermata? (2022)
Step 1: Understand what Echinodermata is. It is a group of marine animals that includes starfish, sea urchins, and sea cucumbers.
Step 2: Learn about the characteristics of Echinodermata. They have a hard, spiny skin, a water vascular system, and are usually radially symmetrical.
Step 3: Identify what a notochord is. A notochord is a flexible rod-like structure that provides support and is found in some animals.
Step 4: Recognize that Echinodermata do not have a notochord. This is a key feature that distinguishes them from another group called Chordata, which does have a notochord.
Step 5: Conclude that the statement 'Echinodermata do not possess a notochord' is correct and is NOT a characteristic of Echinodermata.
