Seeds of the lodgepole pine do not germinate unless:
A) Stimulated by fire, which indicates ground has been cleared and seedlings have a chance to become established.
B) Stimulated by fire, which is a stimulus indicating no predators will eat the seeds.
C) Stimulated by predators, which feed on the seeds and disperse them.
D) Stimulated by winter rainfall, which provides a stimulus for seeds to germinate.

Question

Quizplus · Accepted Answer

Lodgepole pine seeds have a tough seed coat that requires heat to soften and open. Fire clears the ground of competitors and also provides mineral-rich ash that the seedlings can use for nutrients. Therefore, the stimulation by fire is necessary for the seeds to germinate and establish themselves as new lodgepole pine forests.

Seeds of the Lodgepole Pine Do Not Germinate Unless