The Water Vascular System of Echinoderms

question 49

Multiple Choice

The water vascular system of echinoderms

• A) functions as a circulatory system that distributes nutrients to body cells.
• B) functions in locomotion and feeding.
• C) is bilateral in organisation, even though the adult animal is not bilaterally symmetrical.
• D) moves water through the animal's body during filter feeding.

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Definitions:

Price Elasticity

The measure of demand fluctuation as a response to changing prices of a good.

Agricultural Products

Products stemming from the practice of agriculture, such as crops and animal products, which can be used for food, fuel, and raw materials.

Spending

The act of using money to purchase goods or services, contributing to economic activity.

Food Purchases

Transactions involved in acquiring food products for consumption, influenced by prices, income, preferences, and availability.