Flatworms Are Very Thin and Can Exchange Materials Across Their

question 56

Multiple Choice

Flatworms are very thin and can exchange materials across their surface.Flatworms lack which of the following anatomical systems?

• A)Respiratory
• B)Nervous
• C)Digestive
• D)Movement
• E)Excretion

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Definitions:

Fiddler Crabs

Small crabs known for their sexually dimorphic claws, where males have one large claw used for communication and territorial disputes.

Pheromones

Chemical substances produced and released into the environment by an animal, affecting the behavior or physiology of others of its species.

Chemical Attractants

Substances that cause organisms to move toward them due to a chemical gradient, often used in cell signaling and navigation.

Haplodiploidy

A sex determination system in some insects where males develop from unfertilized eggs and are haploid, while females develop from fertilized eggs and are diploid.