Question

why is the understory of a forest always in constant shade​

Answer 1

A gap in the canopy caused by the death of a tree stimulates the potential emergent trees into competitive growth as they grow upwards to fill the gap. The under story experiences greater humidity than the canopy, and the shaded ground does not vary in temperature as much as open ground.

Answer 2

Under-story of a forest

Explanation:

The layer of small trees, shrubs and plants in a forest is known as the understory. Ii is comprised of saplings, small trees, bushes, shrubs and other tiny vegetation.

The understories in forests are always in shade due to the canopy effect. The taller trees in a forest often have thick leaves which form an upper layer known as canopy that prevents the penetration of sunlight to lower levels of the forest.