Question

The population of bison in a prairie ecosystem has significantly declined. What will most likely happen to the grass population the bison feeds on?
a.
The grass population will increase.
b.
The grass population will decrease.
c.
The grass population will be wiped out.
d.
The grass population will remain unchanged.

Answer 1

a. The grass population will increase — with fewer bison grazing, there is less herbivory pressure, so plants can grow and reproduce more.