Movement of Phloem Sap from a Source to a Sink

question 36

Multiple Choice

Movement of phloem sap from a source to a sink ________.

• A) occurs through the apoplast of sieve-tube elements
• B) depends upon active transport of sugars into the sieve-tube elements
• C) depends on tension, or negative pressure potential
• D) depends on active transport of water into sieve-tube elements at the source
• E) results mainly from diffusion of sugars into companion cells

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Definitions:

Job-Order Costing System

An accounting method that tracks the costs associated with producing a specific batch of products or a specific job.

Predetermined Overhead Rate

The rate used to allocate manufacturing overhead to products, calculated before the period begins based on estimated costs and activity levels.

Direct Labor-Hours

A measure used in accounting to allocate costs, referring to the total hours worked by employees directly involved in the manufacturing process.

Job-Order Costing System

A cost accounting system that accumulates costs incurred according to each job or project, suitable for industries where goods or services are produced on a custom basis.