In an Experiment Investigating the Flow of Water Through Xylem

question 197

Multiple Choice

In an experiment investigating the flow of water through xylem, scientists removed the roots from a tree and then placed the base in a vat of poison.The poison moved up the tree, killing all living cells as it went.How would the results differ if scientists had also removed the leaves of the tree?

• A) The results would have been the same.
• B) The poison would have flowed more forcefully.
• C) The poison would have flowed in the same direction, but much more slowly.
• D) The poison would not have flowed at all.
• E) The flow rate would gradually slow.

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Definitions:

Gastrovascular Cavity

A central cavity in certain simple organisms, such as cnidarians, serving both digestive and circulatory functions.

Tentacle

Flexible, often elongated appendages found in some animals, like octopuses and jellyfish, used for sensation, locomotion, and feeding.

Cnidarians

Cnidarians are a phylum of aquatic invertebrates that include jellyfish, corals, and sea anemones, characterized by a simple body plan with a mouth surrounded by tentacles.

Gills

Respiratory organs found in many aquatic organisms, used for the exchange of gases (oxygen and carbon dioxide) with the water.