Bending Plant Roots with Gravity Quiz

Note: The correct answers are marked in green here for you, but this marking will not be visible to the students when they view the assignment.

a. ...plant roots get thicker the longer they grow b. ...plant shoots grow in the direction of light c. ...plants respond to the direction of gravity when they grow d. ...plants in the tropics grow faster than anywhere else

Correct.

Incorrect.

a. They have special cells in the tip of their roots which can sense the direction of gravity b. They have special cells which sense the light that is coming from above c. Their root tips can sense soil moisture, which increases the deeper you go into the ground d. Plants cannot sense which way is up and down

Correct.

Incorrect.

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a. Up b. Down c. Left d. Right

Correct.

Incorrect.

a. Soil moisture b. temperature c. Light d. All of the above

Correct.

Incorrect.

a. Downwards, as plant roots always grow in that direction b. Upwards, as without gravity the roots will react by growing in the opposite direction as usual c. In all directions, as without gravity plants get disoriented as they cannot sense which way is up or down d. Plants cannot grow in space without gravity

Correct.

Incorrect.

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