Suppose Late Succession Plants That Are Surrounded by Early Succession

Multiple Choice

Suppose late succession plants that are surrounded by early succession plants grow at a rate of 0.7 cm per day. If the early succession plants are removed experimentally, the late succession plants are observed to grow at a rate of 0.6 cm per day. This experiment shows that the early succession plants have a _______ effect on the late succession plants, and this observation is most consistent with the _______ model of succession.

A) positive; facilitation
B) positive; tolerance
C) positive; inhibition
D) negative; facilitation