In Many Echinoderms Respiration and Waste Removal Take Place by Means

question 43

Multiple Choice

In many echinoderms respiration and waste removal take place by means of finger-like projections that occur near the spines,which are called

• A)madreporite.
• B)ampulla.
• C)nerve ring.
• D)papulae.
• E)endoskeleton.

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Common Stock

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Shares that a company buys back from its shareholders, reducing the amount of outstanding stock on the market.

Par Common Stock

The nominal or face value assigned to common shares in the articles of incorporation, often having little relation to the market value.