Question

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?

		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.
		The roots grow up against the Earth’s gravity, and the stem grows down, independent of the g-forces generated by the turntable.
		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.
		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.

Answer 1

ANSWER The roots grow toward the center of the testable, and the stem grows away, from the center, as the g-foscos generated I by spinning a greater than those due to geavity. • Plants are able to sense their environment and actually respond appropriately. One of the key parameters that every planta must respond to is the direction of gravity : stems go up ( opposite to the pull of geavity) land roots go down (in the same direction as the force of gearity). The growing rooklets respond as you estate the devices, effectively altering the direction of gravity. & Artificial geavity is a potentially useful tool, but it's not a universal panacea. The 2/2

force generated by a spinning centrifuge is not exactly the same as gravity. If you have a small centrifuge you have to spin it pretty fast to create og levels high enough to be effective 3/3