Why Was the Feeding Strategy of Riftia Worms Such a Mystery

question 22

Multiple Choice

Why was the feeding strategy of Riftia worms such a mystery to scientists when they were first discovered?

• A) These worms have no mouth.
• B) These worms have no digestive tract.
• C) These worms have no anus.
• D) All of these choices

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Definitions:

Chlamydia

A sexually transmitted infection caused by the bacterium Chlamydia trachomatis, often asymptomatic but treatable with antibiotics.

HIV

Human Immunodeficiency Virus, a virus that attacks the immune system and can lead to the disease AIDS if not treated.

Genus

A class of things regarded as having various subcategories (its species).

Beverage

A drinkable liquid that is not water, often consumed for nourishment, refreshment, or pleasure.