AP BIOLOGY

ECOLOGY

ENERGY FLOW AND PRIMARY PRODUCTION

Question [CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
The fresh water ecosystem with the least primary productivity is
A
swamps and marshes
B
salt marshes
C
lakes and streams
Explanation: 

Detailed explanation-1: -The highest net primary productivity in terrestrial environments occurs in swamps and marshes and tropical rainforests; the lowest occurs in deserts.

Detailed explanation-2: -Answer and Explanation: The bog freshwater ecosystem is the least productive.

Detailed explanation-3: -In the deeper, open-water areas, algae are the dominant green plants. Collectively, these plants form the base of the freshwater food web. Their conversion, through photosynthesis, of inorganic nutrients and minerals to living (organic) matter is called primary production.

Detailed explanation-4: -Because of the effect of water level fluctuations in the water body, the lake is oligotrophic. Oligotrophic lakes have poor primary productivity and biomass, as well as low nutrient concentrations (N and P).

There is 1 question to complete.