Question

2
which structure would be most beneficial for a plant in a tundra biome?
a. tall, thin trunks that conserve water
b. shallow roots that do not reach the frozen soil
c. thick, tall trunks that release water
d. deep roots that can access groundwater stores

Explanation:

In a tundra biome, the soil has a permafrost layer (frozen soil) near the surface. So plant roots can't go deep (eliminating D). Tall, thin trunks (A) or thick, tall trunks (C) would be vulnerable to cold, wind, and snow. Shallow roots (B) that don't reach frozen soil allow plants to access the unfrozen topsoil, which is adapted to tundra conditions.

Answer:

B. shallow roots that do not reach the frozen soil