Which is an example of a response?

A.
ivy growing around the pole of a fence

B.
water lost from the lungs during breathing

C.
outside temperature dropping at night

D.
the angle of the sun changing during the day

Question

Which is an example of a response? 	
	
 
A.
	ivy growing around the pole of a fence
	
 
B.
	water lost from the lungs during breathing
	
 
C.
	outside temperature dropping at night
	
 
D.
	the angle of the sun changing during the day

anonymous · Answer

This one's tricky. 

A is the response. 

Plants can actually sort of feel things around them. 
And when the ivy touches the pole, it can feel it. 

That's why the ivy grows around the fence pole. 
It's responding to the feeling of the pole. 

There's a word for that. 
It's called "thigmotropism." 

B, C, and D are describing things that just happen on their own