Turbellarian Flatworms Have a Distinct Head

question 29

Multiple Choice

Turbellarian flatworms have a distinct head.When compared to the head of an insect,what is the flatworm head missing?

• A)Sensory organs
• B)light-sensitive structures
• C)Anterior collection of nerve cells
• D)A mouth

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Definitions:

Gallbladder

A small organ located beneath the liver, storing and concentrating bile produced by the liver before releasing it into the small intestine.

Pharynx

A muscular tube that functions as the part of the digestive and respiratory systems by carrying air from the nose to the larynx and food from the mouth to the esophagus.

Salivary Gland

Glands located in the mouth that produce saliva, which aids in digestion and keeps the mouth moist.

Muscularis Externa

The layer of muscle in the gastrointestinal tract located outside the submucosa, responsible for the movements of peristalsis and segmentation.