Question

Which one of the following is not a function of an ecosystem?
A. Energy flow
B. Decomposition
C. Productivity
D. Stratification

Answer 1

An ecosystem is referred to as a geographic region or area where plants, animals, and other organisms, weather and landscape, work together to make a bubble of life. Ecosystems consist of biotic-living, and abiotic factors/ nonliving parts. Biotic factors are considered plants, animals, and also other organisms.

Complete answer:
You should know, simply we define ecosystem as a community or group of living organisms which live and interact with each other in a specific environment.
The World Ocean is believed as the largest existing ecosystem on our planet that covers 71% of the Earth's surface, is a source of livelihood for over 3 billion people
There are four important functions of the ecosystem – Productivity, Decomposition, Energy flow, and Nutrient cycling.
Remember, Stratification is not a function of ecosystem and is defined as the vertical layering of a habitat (the arrangement of vegetation in layers). It classifies vegetation layers largely according to the difference in heights of plant growths.

Therefore, the correct answer is option D.

Additional information:
We also divide, Types of Ecosystem into: Forest Ecosystems, Tundra Ecosystems. Grassland Ecosystems and Desert Ecosystems.
You should know that the importance of Ecosystem is that it provides habitat to wild plants as well as animals, promotes various food chains/ food webs, it also controls essential ecological processes and also promotes lives. It is also involved in the recycling nutrients between- biotic and abiotic components.

Note: Remember, Humans are very much dependent on Earth's ecosystems and on the services that it provides, like food, clean water, spiritual fulfilment, disease regulation, climate regulation, and aesthetic enjoyment. The relationship of human’s well-being and ecosystem services is not believed linear. We all humans live in a terrestrial ecosystem - these are regions where organisms, like animals and plants, live and develop in the soil and air which surrounds the specific regions.