In the Excretory System of an Earthworm, Coelomic Fluid Enters

question 79

Multiple Choice

In the excretory system of an earthworm, coelomic fluid enters the _______, flows through tubules whose cells alter its composition, and then exits the animal via the _______.

• A) nephridiopores; nephrostomes
• B) nephrostomes; bladders
• C) nephridiopores; excretory pores
• D) nephrostomes; nephridiopores
• E) nephrostomes; collecting tubules

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Definitions:

Marginal Cost

Expenses related to the production of an additional unit of any good or service.

Short-Run Supply

A graphical representation that shows the quantity of goods that suppliers are willing and able to produce and sell at different prices in the short-term, with some inputs fixed.

Short Run

A time period in economics where at least one factor of production is fixed, limiting the immediate response to changes in demand or supply.

AVC

Average Variable Cost, the total variable cost divided by the quantity of output, representing the variable cost per unit of output.