One Distinctive Feature of All Echinoderms

question 4

Multiple Choice

One distinctive feature of all echinoderms:

• A)Jointed legs.
• B)Gill slits.
• C)Endoskeleton.
• D)Water vascular system.
• E)Bilateral symmetry.

---

Definitions:

Sellers

Entities or individuals that make available goods or services for purchasing within the market.

Price Taker

An economic actor that accepts the prevailing market prices and lacks the power to influence those prices due to its small market share.

Natural Monopoly

A market condition where a single supplier is most efficient in serving the entire market's demand, often due to high barriers to entry like significant infrastructural costs.

Perfect Competition

A market structure characterized by a large number of buyers and sellers, homogeneous products, free entry and exit, and perfect information.