Chemical Cues That Help Guide a Developing Pollen Tube Toward

question 55

Multiple Choice

Chemical cues that help guide a developing pollen tube toward an ovule are released by the ____.

• A) antipodal cells
• B) synergids
• C) egg
• D) central cell
• E) sperm

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Definitions:

Test Statistic

A value calculated from sample data during a hypothesis test that is used to decide whether to reject the null hypothesis.

Null Hypothesis

In statistical hypothesis testing, it is the hypothesis that there is no effect or no difference, and it serves as the default or starting assumption.

Slope

In the context of linear regression, it's the amount by which the dependent variable is expected to change for a one-unit change in the independent variable.

Alternative Hypothesis

The hypothesis that proposes there is a statistically significant difference between two or more groups or variables.