The answer is <span>D- thigmotropism
</span>
Tropism is plant growth in a response to a stimulus.
Through the process of elimination:
A - phototropism is plant growth in a response to light.
B - Photoperiodism is an organism reaction to the lengths of days and nights.
C - Gravitropism is plant growth in a response to gravity.
D - Thigmotropism is plant growth in a response to contact
Since <span>a grapevine makes a contact with a fence, this is an example of thigmotropism.</span>
The correct answer is FALSE
<span>If you are performing an experiment in which you must use heat to denature a double helix and create two single stranded pieces, then the nucleotides will all denature at the same time because of the polymerase chain reactions that occur.</span>
