You Are Studying the Effects of Artificial Gravity on Plant

question 129

Multiple Choice

You are studying the effects of artificial gravity on plant growth for NASA, and grow plants on a horizontal turntable that rotates (spins) fast enough to generate multiple g-forces (many times Earth's gravity) . Which way do the roots and stems grow?

• A)The stem grows up against Earth's gravity, and roots grow in accord with Earth's gravity, independent of the g-forces generated by the turntable.
• B)The stem grows toward the center of the turntable, and the roots grow away from the center, as the g-forces generated by spinning are greater than those due to gravity.
• C)The roots grow toward the center of the turntable, and the stem grows away from the center, as the g-forces generated by spinning are greater than those due to gravity.
• D)The roots grow up against the Earth's gravity, and the stem grows down, independent of the g-forces generated by the turntable.

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Definitions:

Ipsilateral

Located on or affecting the same side of the body, typically in reference to neurological processes or conditions.

Sympathetic Nervous System

A part of the autonomic nervous system responsible for the body's 'fight or flight' response, regulating heart rate, blood pressure, and energy mobilization.

Heart Rate

The number of heartbeats per unit of time, typically expressed as beats per minute (bpm), indicating the heart's efficiency in pumping blood throughout the body.