Phloem Transport Is Described as Being from Source to Sink

question 49

Multiple Choice

Phloem transport is described as being from source to sink. Which of the following would most accurately complete this statement about phloem transport as applied to most plants in the late spring?
Phloem transports ________ from the ________ source to the ________ sink.

• A) amino acids; root; mycorrhizae
• B) sugars; leaf; apical meristem
• C) nucleic acids; flower; root
• D) proteins; root; leaf
• E) sugars; stem; root

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Definitions:

Homeostasis

The tendency of a biological system to maintain stability while adjusting to conditions that are optimal for survival.

Yerkes-Dodson Law

A theory suggesting there is an optimal level of arousal for the best performance of a task; too little or too much arousal can negatively affect task performance.

Moderately Aroused

A state of being neither too relaxed nor too excited, often considered optimal for certain tasks or learning.

Motivated Behavior

Actions that are initiated or influenced by desires and needs, driving individuals towards certain goals.