Plants Are Able to Extract Many Elements from the Soil

question 13

Multiple Choice

Plants are able to extract many elements from the soil by:

• A)photosynthesis.
• B)diffusion.
• C)releasing protons to make the soil more acidic.
• D)having numerous root hairs.
• E)diffusion, having numerous root hairs, and releasing protons to make the soil more acidic.

---

Definitions:

Parasympathetic

Part of the autonomic nervous system responsible for the body's rest and digest response, counteracting the fight or flight system.

Aroused

A state of heightened physiological and psychological activity, including alertness and emotional engagement.

Spinal Cord

A long, thin, tubular bundle of nervous tissue and support cells that extends from the brainstem to the lower back, part of the central nervous system.

Bodily Reflexes

Automatic, involuntary responses of the body to certain stimuli that do not require conscious thought, such as the knee-jerk reflex.