If a Beaver Eats the Bark All the Way Around

question 82

Multiple Choice

If a beaver eats the bark all the way around a tree trunk (a process called ʺgirdlingʺ) , why does the tree die?

• A) Cells of the lateral meristem can no longer divide.
• B) Water and minerals are no longer supplied to the leaves.
• C) The phloem is damaged, and the transport of sugars ceases.
• D) The tree cannot continue to photosynthesize.
• E) The tree is susceptible to insect and fungal diseases.

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Definitions:

Concurrent Interference Theory

A theory suggesting that the ability to learn or recall information can be hindered by simultaneous processing of competing information.

Nausea Inducing Substance

refers to a material or compound that causes a feeling of sickness or urge to vomit upon ingestion or exposure.

Long-delay Learning

A learning process where there is a significant time gap between the stimulus and the response or reinforcement, making the learning task more difficult.

Pavlovian Preconditioning

A process in classical conditioning where a neutral stimulus is presented just before a conditioned stimulus, often enhancing the learning of the conditioned response.