Question

The productivity of a freshwater ecosystem depends on water movement.

Which of the following freshwater ecosystems has very low to no water flow?
A. Slough
B. Bog
C. Stream
D. Swamp

Answer 1

B. Bog is a freshwater ecosystem that has very low to no water flow. A bog is a type of wetland that accumulates peat, a deposit of dead plant material. Bogs are characterized by a waterlogged environment with very low oxygen levels, which limits the decomposition of dead plant material. As a result, bogs have low nutrient levels and support a unique set of plant and animal species adapted to the acidic, low-nutrient conditions. Unlike streams, sloughs, and swamps, bogs typically do not have flowing water, which is why their productivity depends more on other factors such as the availability of sunlight and nutrients.

Answer 2

The correct answer is B. Bog.

A bog is a type of freshwater ecosystem that has very low to no water flow. It is a wetland that is characterized by a thick layer of peat, which is formed from dead and decaying plant material. Bogs receive most of their water from precipitation, rather than from surface or groundwater sources. The lack of water flow in a bog means that nutrients are not replenished as quickly as they are in other freshwater ecosystems, which can limit the productivity of the ecosystem.