Scientists Measured the Pressure in the Xylem of Redwood Trees

question 8

Multiple Choice

Scientists measured the pressure in the xylem of redwood trees at different heights and found that the higher they made their measurements,the lower the pressure.They extrapolated this to a pressure of zero,and concluded that the tallest a tree could grow is 122-130 meters.The tallest know tree on Earth is 112.7 meters.Which of the following most likely limits the height of trees?

• A)The amount of transpiration in leaves
• B)The amount of photosynthesis in leaves
• C)The amount of energy needed to pump water to the tops of the trees
• D)The strength of water cohesion
• E)The ability to take up CO₂

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Definitions:

Frontal Lobes

Regions of the brain involved in decision making, problem solving, control of purposeful behaviors, consciousness, and emotions.

Temporal Lobes

Part of the cerebral cortex involved in processing auditory information and is critical for the understanding of language and the formation of memories.

Occipital Lobe

The area of the cerebral cortex situated in the brain's rear, tasked with interpreting visual data.

Occipital Lobe

Positioned at the brain's posterior, this segment of the cerebral cortex is charged with the analysis of visual stimuli.