Use the Diagram Above to Answer the Following Questions

question 43

Multiple Choice

Use the diagram above to answer the following questions.
-Which letter indicates a choroid plexus, which produces cerebrospinal fluid (CSF) in all four ventricles of the brain?

• A) A
• B) B
• C) C
• D) D
• E) E

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Definitions:

Grassland Habitat

Areas where grasses predominate over other plant types, which support a varied mix of flora and fauna specialized to live in these environments.

Keystone Species

A species that plays a critical role in maintaining the structure of an ecological community, affecting many other organisms in the environment and helping to determine the types and numbers of various other species in the community.

Endemic Species

Species that are native to and can only be found within a specific geographic area.

Indicator Species

Species whose presence, absence, or abundance reflects a specific environmental condition, such as pollution levels.