Question

You want to determine which part of a plant is actually sensitive to light for phototropism. Which of the following would be a good first experiment? A. Shine the light from one side only. B. Then measure the auxin diffusing down the stem on the light areas. C. Remove the apical tip and apply auxin before beginning light treatments. D. Cover one part (for instance, the tip or base) before beginning light treatments.

Answer 1

cover one part (for instance, the tip or base) before beginning light treatments

Step-by-step explanation:

• The orientation of the plant either towards the light or away from the light source is termed as phototropism.
• If the plant gets oriented towards the light source then this is positive phototropism and if it gets oriented away from the light source then this is negative phototropism.
• Several ways exists using which one can prove which part of the plant is sensitive to light for phototropism and one of the ways is to cover the tip or the base of the plant and then provide the light stimulus to see that which part is necessary for phototropism to occur.

Answer 2

Prototropism is the response of the living thing when subjected to the light of the sun. The response could be that the object moves towards it or away from it. From the choices above, the answer to the question is letter "C. remove the apical tip and apply auxin before beginning light treatments."