Estivation is dormancy during hot and dry periods; how does it differ from hibernation?

Estivation is dormancy during hot and dry periods; how does it differ from hibernation?

• A. Estivation is dormancy during hot/dry periods; hibernation occurs in cold seasons.
• B. Estivation occurs during cold seasons; hibernation occurs during hot periods.
• C. Estivation is an active breeding phase; hibernation is sleep-like inactivity.
• D. Estivation increases metabolism; hibernation decreases metabolism.

Answer: (A)

The main idea is that both estivation and hibernation are dormancy strategies animals use to survive unfavorable conditions, but they occur in different seasons. Estivation is the state during hot, dry periods to conserve water and energy in arid environments, while hibernation is the state during cold seasons to save energy when temperatures are low and food is scarce. This timing difference is what the correct choice captures: estivation happens in hot/dry conditions, and hibernation happens in cold conditions. The other ideas don’t fit: estivation is not a cold-season state, and it is not an active breeding phase. Also, both dormancies involve reduced metabolism to conserve resources; estivation does not increase metabolism.

The main idea is that both estivation and hibernation are dormancy strategies animals use to survive unfavorable conditions, but they occur in different seasons. Estivation is the state during hot, dry periods to conserve water and energy in arid environments, while hibernation is the state during cold seasons to save energy when temperatures are low and food is scarce. This timing difference is what the correct choice captures: estivation happens in hot/dry conditions, and hibernation happens in cold conditions.

The other ideas don’t fit: estivation is not a cold-season state, and it is not an active breeding phase. Also, both dormancies involve reduced metabolism to conserve resources; estivation does not increase metabolism.