A Root or Stem Increases in Diameter When

question 31

Multiple Choice

A root or stem increases in diameter when

• A) primary xylem cells divide.
• B) phloem cells divide.
• C) primary xylem cells elongate.
• D) vascular cambium cells divide.
• E) phloem cells elongate.

---

Definitions:

Endocrine Activity

The function of glands that secrete hormones directly into the bloodstream to regulate various bodily processes.

Resistance Stage

The second phase of the stress response, where the body tries to adapt to the stressor.

Approach-avoidance Conflict

A psychological situation where an individual is simultaneously attracted to and repelled by the same goal or object, often leading to stress and indecision.

Avoidance-avoidance

A psychological conflict that arises when an individual must choose between two unattractive options or outcomes.