Energy flow in an ecosystem class 9 exercise

1. There is a continuous cycle of interrelationship between a community and its physical environment that causes the formation of complex and permanent relationship. Such kind of phenomenon that occurs in the nature is known as ecosystem. So, an ecosystem can be defined as an overall integration of the whole mosaic of interacting organisms and their physical environment in particular areas. 2. An ecosystem includes biotic factors like producer, consumers, decomposers and abiotic factors like soil, rock, water, heat, light etc. 3. An ecosystem includes abiotic factors like soil, rock, water, heat, light etc. It helps for the circulation of the ecosystem properly. It also helps in the balance of ecosystem. They are responsible for the survival of the living organisms All living beings in nature fall under biotic factors. The factors indicate a biological community of particular area. A biological community can be divided into producer, consumer and decomposer on the basis of flow of energy in the ecosystem. Producers: Producers are those living organisms of the ecosystem which are capable of synthesizing their own food from inorganic compound. For example, grasses, trees, Aquatic green plants, etc. Consumers: Consumers are the heterotrophs of the ecosystem which feed on other living organisms. For example, cats, insects, fish etc. They are divided into three categories: i. Primary consumers. ii.Secondary consumers. iii.Tertiary consumers. Decomposers: Decomposers are also ca...

MSBSHSE Class 9 Science Chapter 7 Energy Flow in an Ecosystem Solutions MSBSHSE Class 9 Science Chapter 7 Energy Flow in an Ecosystem Solutions can be used by students as reference material to prepare for the In order to learn the subject efficiently, students can use the help of these Maharashtra Board Class 9 Science Chapter 7- BYJU’S Important Questions & Answers 1. Carnivores occupy the second trophic level in the food chain. Is it correct? Justify your answer. Answer: Carnivores occupy the second trophic level in the food chain- The statement is correct. Each level in the food chain is known as a trophic level. A trophic level is the step at which the organism obtains its food in the chain. These carnivores consumers use herbivores as their food and herbivores come at the first trophic level after producers. 2. The flow of nutrients in an ecosystem is considered to be a ‘one way’ transport. Is the statement correct? Justify. Answer: Though the energy flow in an ecosystem is one way, the flow of nutrients is cyclical. Known as bio-geo-chemical cycle, the cyclical flow of nutrients required for the organisms to grow are continuously transmitted from abiotic to biotic factors and biotic to abiotic factors within an ecosystem. This cycle functions continuously via a medium of the biosphere that is made up of the lithosphere, atmosphere and hydrosphere. 3. Are plants in an ecosystem called primary consumers? Give reason. Answer: Plants in an ecosystem are the autotro...