Make a list of the various consumers of the ecosystems, classify them according to mode of nutrition.

Answer the following How are organisms classified on the basis of mode of nutrition?

Make a list of some luminous objects and substances and classify them into natural and artificial sources of light.

Make a list of the various hardware and software items of a computer and discuss their working in the class.

complete the paragraph by choosing the appropriate words given in the brackets : (Linnaeus, ~ Dobzhansky, Carl Woese, Theophrastus, Artificial method, Aristotle, Natural system, Traditional system) Time to time, different scientists have tried to classify the animals. Greek philosopher.............. was the first to perform the animal classification. Aristotle classified the animals, according to the criteria like body size, habits and habitats. classification proposed by Aristotle is known as ................ Besides Aristotle, artificial method of classification was followed by ................, Pliny, John Ray and ............. Later on, ..................of classification’ was followed. Natural system of classification was based on various other criteria. Ry the time, system of classification based on evolution was also brought into practice. It was used by ............. and Meyer. Recently, ................ has also proposed the animal classification.

Observe the garbage collected in the dustbin of you classroom and make a list of the various material in it. Discuss with your teacher, how these materials can be properly disposed off. Can we do the same with the garbage generated in our house? Think about it.

Make list of the following. Animals and plants from pond ecosystem.

Make list of the following. Animals and plants from grassland ecosystem.

Paragraph based question Read the following paragraphs and answer the questions based on it. After the death of apex consumers, their energy becomes available to the decomposers. Fungi and other micro-organisms decompose the bodies of dead animals. They are called decomposers. In the process of obtaining food from the remains of organisms, decomposers convert them into simple carbon compounds. These substances easily mix with air, water and soil from where they are again absorbed by plants and incorporated into the food chain. How is energy and other nutrients circulated in the ecosystem?

Paragraph based question Read the following paragraphs and answer the questions based on it. After the death of apex consumers, their energy becomes available to the decomposers. Fungi and other micro-organisms decompose the bodies of dead animals. They are called decomposers. In the process of obtaining food from the remains of organisms, decomposers convert them into simple carbon compounds. These substances easily mix with air, water and soil from where they are again absorbed by plants and incorporated into the food chain. How does dead remains useful to ecosystem?

Make a list of various waste materials and articles in your area and prepare a chart as follows: