The C₄ Pathway Is Necessary in Tropical Plants Because

question 3

Multiple Choice

The C₄ pathway is necessary in tropical plants because:

• A) at high temperatures, the plants cannot maintain sufficient water levels within the cells.
• B) tropical plants do not have proper day/light cycles to maintain the balance of CO₂ necessary for carbohydrate storage.
• C) at high temperatures, the oxygenase activity of rubisco is high.
• D) All of the above.
• E) None of the above.

---

Definitions:

Habituation

A decrease in response to a stimulus after repeated exposure to it, representing a fundamental form of learning.

Sensitization

An increased reaction to a stimulus following repeated exposure, often used in the context of drug tolerance or allergic reactions.

Behavioral Contrast

A phenomenon observed in behavioral psychology where a change in conditions leads to an opposite change in the individual's response rate, evident in both positive and negative reinforcements.

Higher-order Conditioning

A form of classical conditioning in which a stimulus is first made meaningful or significant through its association with another conditioned stimulus rather than with an unconditioned stimulus.