Question

Final Assignment
1) Write a note on ecosystem and the components of ecosystem. (5 marks)
2) Write a note on food chain and
food web with suitable diagrams.
(5 marks)​

Answer 1

Answer:

An ecosystem is a group or community composed of living and non-living things and their interactions with each other. They can be natural as well as artificial. Every ecosystem has two components, namely, biotic components and abiotic components. Biotic components refer to all living organisms in an ecology while abiotically refers to the non-living things. These biotic and abiotic interactions maintain the equilibrium in the environment.

Components of Ecosystem

Biotic components are the living things that have a direct or indirect influence on other organisms in an environment. For example plants, animals, and microorganisms and their waste materials.

Abiotic components of an ecosystem include all chemical and physical elements i.e. non-living components. Abiotic components can vary from region to region, from one ecosystem to another. They mainly take up the role of life supporter. They determine and restrict the population growth, number, and diversity of biotic factors in an ecosystem. Hence, they are called limiting factors.

A terrestrial ecosystem consists of abiotic factors like climate, type of soil or rock, altitude, temperature, nutrients, and minerals, whereas abiotic components in an aquatic ecosystem include dissolved gases, depth of water, salinity, pH of water, light intensity etc.

2ans)A food chain shows the feeding relationship between different organisms in a particular environment and/or habitat. ... Food chains show how energy is passed from the sun to producers, from producers to consumers, and from consumers to decomposes such as fungi. They also show how animals depend on other organisms for food.

Answer 2

Answer:

Q.2 Food chain is a linear sequence of organisms which starts from producer organisms and ends with decomposer species. Food web is a connection of multiple food chains. Food chain follows a single path whereas food web follows multiple paths. From the food chain, we get to know how organisms are connected with each other. Food chain and food web form an integral part of this ecosystem. Let us take a look at the food chain and a food web and the difference between them.

Q.1. Biotic components include plants, animals, decomposers. Nonliving components include air, water, land. A food chain is a chain in an ecosystem where there is transfer of food and energy from one organism to another in a sequence.

hope it will help you!!!