-In addition to demonstrating that auxin stimulates elongation, this diagram also shows that
A) application of additional auxin causes greater bending.
B) the application of auxin causes growth.
C) removing shoot tips also removes auxin receptors.
D) the lower parts of the shoot are able to detect light.

Question

-In addition to demonstrating that auxin stimulates elongation, this diagram also shows that
A) application of additional auxin causes greater bending. 
B) the application of auxin causes growth. 
C) removing shoot tips also removes auxin receptors. 
D) the lower parts of the shoot are able to detect light.

Quizplus · Accepted Answer

The diagram shows that the application of auxin causes upward growth in the stem segments. This demonstrates that auxin stimulates elongation/growth. Choice A is incorrect because the diagram does not show any bending caused by auxin. Choice C is incorrect because the diagram does not provide any information about auxin receptors being present in shoot tips. Choice D is incorrect because the diagram does not provide any information about the lower parts of the shoot detecting light.

-In Addition to Demonstrating That Auxin Stimulates Elongation, This Diagram