Question

the graph describes the population of dandelions in a field over the course of one summer.
population of dandelions
graph with “number of organisms” (y - axis) and “time” (x - axis); curve starts flat, then increases rapidly
which statement best describes the growth of the dandelions?
a. linear growth occurs because the field provides abundant but limited resources during the summer.
b. logistic growth occurs because the field provides unlimited resources during the summer.
c. exponential growth occurs because the field provides unlimited resources during the summer.
d. fluctuating growth patterns occur because the population reached the carrying capacity of the field during the summer.

Explanation:

• Option A: Linear growth has a constant slope, but the graph is curved (not linear), so A is wrong.
• Option B: Logistic growth has an S - curve (with a carrying capacity and limited resources), but the graph here is exponential (J - curve) and the option says unlimited resources which is for exponential, not logistic, so B is wrong.
• Option C: The graph shows a J - shaped curve, which is characteristic of exponential growth. Exponential growth occurs when resources are unlimited (or at least appear so in the short - term for the population), matching the description in option C.
• Option D: The graph does not show fluctuating growth; it shows an increasing curve, and reaching carrying capacity is part of logistic growth (S - curve), not what's shown here, so D is wrong.

Answer:

C. Exponential growth occurs because the field provides unlimited resources during the summer.