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question 13

Multiple Choice

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Describe the mechanisms involved in the opening and closing of stomata and their physiological implications.

Understand the role of active transport in the translocation of sugars within plants.

Recognize the energetic requirements of phloem sap translocation and the factors influencing it.

Predict how plants might adapt to environmental changes, especially regarding water use efficiency and leaf morphology.

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Definitions:

Method of Concomitant Variations

A research method where one observes the effects of the deliberate variation of one factor on a phenomenon to identify causation.

Necessary Condition

A necessary condition is a condition that must be present for an event or state of affairs to occur; without it, the event or state cannot exist.

Sufficient Condition

A condition or set of conditions that, if satisfied, ensures that a certain statement or outcome must be true.

Method of Concomitant Variations

A scientific principle stating that if two variables vary together in a consistent manner, then one may be a cause of the other.