A Species Can Be Considered Invasive If It

question 50

Multiple Choice

A species can be considered invasive if it

• A) is deliberately introduced.
• B) is accidentally introduced.
• C) is still present 10 years after introduction.
• D) becomes established after only one introduction.
• E) increases in abundance and has negative effects.

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Definitions:

Digestive Tract

A series of hollow organs joined in a long, twisting tube from the mouth to the anus, where food is broken down and nutrients absorbed.

Vagus Nerve

The tenth cranial nerve, which is a long and complex nerve extending from the brainstem to the abdomen, involved in controlling the heart, lungs, and digestive tract, as well as mediating visceral reflexes and sensations.

Sympathetic Innervation

Part of the autonomic nervous system that generally stimulates the body's fight-or-flight response, increasing heart rate and blood flow, among other functions.

Adrenal Medulla

The inner part of the adrenal gland that secretes adrenaline and noradrenaline, involved in the body's response to stress.