The Hair, the Outer Layer of Skin, and the Nervous

question 116

Multiple Choice

The hair, the outer layer of skin, and the nervous system develop from the

• A) ectoderm.
• B) endoderm.
• C) mesoderm.
• D) germ disc.

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Definitions:

Producers

Organisms, typically plants and algae, that produce organic compounds from simple substances like carbon dioxide, essentially supporting most food chains.

Consumers

Organisms that obtain their energy and nutrients by eating other organisms, cannot produce food themselves and are part of the food chain.

Ecosystem

A biological community interacting with its environment.

Energy Flow

The passage of energy through the components of an ecosystem, from the sun through producers to consumers and then to decomposers.