After a plant is set on a windowsill for several days, it’s owner comes back to find its stem bent at a sharp angle toward the glass window. which of the following describes this movement of the plant in response to stimuli?

a. gravitropism
b. thigmotropism
c. negative phototropism
d. positive phototropism

D. + phototropism

Explanation:

This is due to accumulation of harmone auxin on the tip of the stem.

This harmone accumulate on that part where light comes.

D. positive phototropism

Explanation:

Tropism is a response shown by the plant towards an external stimulus like gravity, light, touch and water. The phototropism can be define as a response shown by the plant towards the sunlight. The positive phototropism can be shown when a plant part bends towards the incident beam of sunlight. This is typically shown by aerial parts like stems and leaves. The negative phototropism is shown by the roots which grow underground they do not require sunlight.

According to the given situation, the plant is showing the response towards the sunlight stimuli by bending therefore, it is an example of positive phototropism.

the function of the protein macromolecule is to move things in and out of the cell and transport other molecules in the body. there are many functions of proteins. they are the basic building blocks of living things and are responsible for the growth and repair of body cells and tissues.

explanation:

the most common type of reef is the fringing reef. this type of reef grows seaward directly from the shore. they form borders along the shoreline and surrounding islands.