Molting and Subsequent Ecdysis in Crustaceans

question 20

Multiple Choice

Molting and subsequent ecdysis in crustaceans

• A)involves production of a new cuticle and shedding of the old one.
• B)is initiated by a stimulus perceived by the central nervous system.
• C)involves a molt-inhibiting hormone produced by the X-organ of the eye stalk,and a molting hormone produced by the Y-organs near the mandibles.
• D)cues on stimuli such as day length,temperature,or humidity.
• E)All of the choices are correct.

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Definitions:

Price Charged

Price charged refers to the amount of money levied on a product or service by a seller, which the buyer must pay to complete the transaction.

Total Revenue Curve

A graphical representation showing how total revenue changes as the quantity sold of a good or service varies, holding all else constant.

Marginal Revenue Curve

A graphical representation showing the change in total revenue with respect to changes in the quantity of goods or services sold.

Downsloping

Characterizes a line or curve on a graph that decreases in value as it moves from left to right, often used in reference to demand curves.