In the Pressure-Flow Model, What Two Phenomena Starts the Flow

question 35

Multiple Choice

In the pressure-flow model, what two phenomena starts the flow of phloem contents?

• A) active transport of sugar into sieve tubes, water follows by osmosis
• B) water leaving sieve tubes by osmosis, followed by active transport of sugar into sieve tubes
• C) active transport of water into sieve tubes, water entering companion cells by osmosis
• D) water enters companion cells by osmosis, followed by active transport of sugar into sieve tubes
• E) active transport of sugar into companion cells, water follows by osmosis

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