When Most Plants Are Initially Exposed to Elevated Carbon Dioxide

question 34

Multiple Choice

When most plants are initially exposed to elevated carbon dioxide levels,they will increase their rate of photosynthesis and grow more rapidly; however,some plants will drop their growth rates over time.A possible result of this phenomenon might be that plants with lower growth rates will

• A) have an increased NPP.
• B) be outcompeted by faster-growing species.
• C) no longer play a role in the nitrogen cycle.
• D) no longer require carbon.

Grasp the concepts of ecological and social intelligence hypotheses and their implications for animal cognition.

Learn about the evolutionary basis and benefits of using tools among animals.

Comprehend the emergent behaviors in simple organisms like Dictyostelium discoides and their implications for understanding behavior without nervous systems.

Understand the concepts of inclusive fitness and how non-reproductive behaviors can contribute to it.

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Definitions:

Fixed-interval

A type of schedule in operant conditioning where a response is rewarded only after a specified amount of time has elapsed, leading to a pattern of response.

Variable-interval

Variable-interval describes a schedule of reinforcement where a response is rewarded after an unpredictable amount of time has passed, in operant conditioning.

Classical Conditioning

A method of learning in which two stimuli are consistently associated; the response initially produced by the second stimulus ultimately becomes triggered by just the first stimulus alone.

Extinction

The process through which the conditioned response is weakened by presenting the conditioned stimulus without the unconditioned stimulus, eventually leading to the cessation of the conditioned response.