Why is tolerance a mechanism that can be found in both early and late seral stages?

Question

Quizplus · Accepted Answer

Tolerance is a mechanism that enables plants to thrive in stressful or limiting environments. Early seral species need to be tolerant of harsh environmental conditions such as drought or poor soil nutrients, while late seral species need to be tolerant of deep shade and competition for resources. Therefore, tolerance is important for both early and late seral stages, albeit for different reasons. Options A and B are incorrect because tolerance is not necessarily related to moisture or temperature, respectively. Option D is also incorrect because both early and late seral species may face different types of disturbances, and not all early seral species are tolerant to insects, nor are all late seral species tolerant to fire.

Why Is Tolerance a Mechanism That Can Be Found in Both