Planaria Feed by

question 48

Multiple Choice

Planaria feed by

• A) attaching to a food item with a sucker and extracting fluids.
• B) tearing and sucking food particles via a muscular pharynx.
• C) externally digesting food items and then ingesting the liquified food.
• D) diffusing in nutrients from the environment through its thin epidermal surface.
• E) filtering the water.

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Definitions:

Homeostatic Response

The process by which organisms regulate internal conditions, such as temperature and pH, to maintain a stable internal environment.

Set Point

The target value that a system regulates towards, such as the human body's regulation of temperature or glucose levels.

Stressor

Any biological, chemical, physical, or psychological factor that causes stress or strain to an organism.

Sensor

In homeostasis, a receptor that detects a change (i.e., a deviation from the homeostatic state).