Many Plant Species Have Evolved in Ecosystems in Which Fire

question 19

Multiple Choice

Many plant species have evolved in ecosystems in which fire is a natural and essential component to habitat health and growth. These ecosystems include prairies, savannas, chaparrals, and conifer forests. As a result, many of these plants require fire to germinate, to establish, or to reproduce. Fire is an example of __________.

• A) a disturbance
• B) an opportunistic activity
• C) a life zone
• D) both a disturbance and opportunistic activity

Comprehend the null hypothesis in chi-square tests for goodness-of-fit and tests of independence.

Calculate degrees of freedom in chi-square tests.

Understand the implications of p-values in hypothesis testing.

Differentiate between chi-square tests for independence and goodness-of-fit.

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