Which of the Following Statements Is Correct with Regard to a "Circadian

question 42

Multiple Choice

Which of the following statements is correct with regard to a "circadian rhythm" in plants?

• A) It may have the same signal transduction pathway in all organisms.
• B) Once set, it cannot be changed.
• C) It works independently of photoperiodic responses.
• D) Once set, it is independent of external signals.
• E) It can be changed to a longer or shorter period by altering the light quality.

---

Definitions:

Neuron

A nerve cell that is the basic building block of the nervous system, responsible for transmitting information throughout the body.

Dendrite

The branched extensions of a neuron that receive signals from other neurons and transmit them toward the cell body.

Axon

An extended, thin part of a neuron responsible for carrying electrical impulses outward from the neuron's main cell body.

Cell Body

The central part of a neuron containing the nucleus and responsible for maintaining the life of the cell.