Tag: evs - i

An ecosystem is a natural system consisting of all plants, animals and microorganisms (biotic factors) in an area functioning together with all the non-living physical (abiotic) factors of the environment. These biotic and abiotic components are regarded as linked together through nutrient cycles and energy flows. Ecosystems are defined by the network of interactions among organisms, and between organisms and their environment.

Two main components exist in an ecosystem: abiotic and biotic. The abiotic components of any ecosystem are the properties of the environment; the biotic components are the life forms, that occupy a given ecosystem. 

Environment is composed of biotic (living) and abiotic (nonliving) components. All components of environment are closely related and they interact with each other.  Environment is composed of both environmental resources and regulatory factor. 

In ecology, a food web describes the feeding connections between organisms in a biotic community. Both energy and nutrients flow through a food web, moving through organisms as they are consumed by an organism above them in the food web. A single path of energy through a food web is called a food chain. A food web consists of all the food chains in a single ecosystem. Each living thing in an ecosystem is part of multiple food chains. Each food chain is one possible path that energy and nutrients may take as they move through the ecosystem. All of the interconnected and overlapping food chains in an ecosystem make up a food web.

The biotic components of an ecosystem are the lifeforms that inhabit it. The life forms of an ecosystem aid in the transfer and cycle of energy. Examples of biotic components are producers and consumers. There are three main types of consumers: herbivores, carnivores and omnivores. 

• The ecosystem is comprised of various food chains in which the organisms interact with each other.
• There is also involvement of the non-living forms. The living form is the biotic components and the non-living forms are the abiotic components. The producers, consumers, and decomposers are the biotic components. 

An ecosystem includes the interaction of the living things i.e biotic factors in a given area with the non-living environment i.e abiotic factors such as weather, earth, sun, soil, climate and atmosphere. Thus the correct answer is option B.

An ecosystem includes the interaction of the living things i.e biotic factors in a given area with the non-living environment i.e abiotic factors such as water, weather, earth, sun, soil, climate and atmosphere. Bacteria, Daphnia and Chlorella form the biotic component of the ecosystem. Thus the correct answer is option A.