Phototropism occurs when a plant bends in the direction of a light source. A common light source is the Sun. The plant hormone auxin is released in response to the Sun. What causes the plant to bend toward the light? A. The hormone auxin causes cells on the shady side of the plant to elongate.
B. The hormone auxin causes cells on the lighted side of the plant to elongate.
C. The hormone auxin causes cells on the shady side of the plant to shrink.
D. The hormone auxin causes cells on the lighted side of the plant to shrink.

A.

Explanation:

Phototropism is most often observed in plants, but can also occur in other organisms such as fungi. The cells on the plant that are farthest from the light have a chemical called auxin that reacts when phototropism occurs.

it also supports my hypothesis. if you rest first you can squeeze the clothespin more times. from the data i collected the average of the eight people concluded exercise makes your muscles more fatigued and less able to squeeze the clothespin compared to resting before squeezing.

small, big, or no change could occur in the phenotype. it could cause something as simple as a cats ears to curl backwards or something as frighting as death. it could also occur in the protien-coding area and have an effect on that but no effect on the amino acids. what has to occur is a changing in the hox gene or the control gene.