Question

plants, like animals, use hormones to send chemical messages between cells and tissues. plant hormones are transported through their vascular tissue. auxins are a group of plant hormones responsible for the elongation of shaded shoot cells. which picture below best illustrates the effect of auxins? select one: a. image b. image c. image d. image

Explanation:

Auxins drive phototropism: when shoots are shaded, auxins accumulate in shaded cells, making those cells elongate more, so the shoot bends toward light. Option a shows a plant bending toward a light source, which matches this auxin effect. Option b shows thigmotropism (touch response), option c shows seed germination/growth stages, option d shows gravitropism (response to gravity).

Answer:

a. [Image of plant bending toward a light source]