Nios Tutor Marked Assignment Environmental Science (333) 2023 . 

1 ) Answer any one of the following questions in about 40-60 words. 

a) Why do we call earth a habitable planet in universe? Give at least two reasons in support of your answer.

b) “Metal conservation is one step to avoid metal depletion.” Justify this statement with suitable examples. Give               two examples of how will you do this in daily life.

 2) Answer any one of the following questions in about 40-60 words. 

a) Describe two ways to conserve and protect soil for future generation.

b) “Aforestation (Plantation Forest) can never replace the natural forest.” Justify this statement with suitable                       examples. Do you agree with this statement?

 3) Answer any one of the following questions in about 40-60 words. 

a) Describe two effects of modern agricultural methods on agriculture land.

b) There is a famous Sanskrit verse/saying:
“Sarve Bhavantu Sukhinah, Sarve Santu Niramaya”
“May all be sinless and may all experience happiness.”
Explain this verse or saying in terms of environmental conservation.

  4) Answer any one of the following questions in about 100 – 150 words. 

a) What will happen, if the balance necessary between biotic, and abiotic components gets disturbed?

b) Draw the symbol of ecomark in India. Who issues this symbol? What message is being conveyed through this             symbol?

  5 ) Answer any one of the following questions in about 100 – 150 words. 

a)    (i) India gets plenty of rainfall, but is not able to utilize it properly. Do you agree? Justify with reason

(ii)Give two evidences to show that ground water plays an important role in agriculture sustainability.

(b)   (i)  Do you think fossil fuel is responsible for environmental degradation? Justify.

(ii)  How does photovoltaic cell work to produce electricity?

  6 ) Prepare any one project out of the given below: 

Survey a nearby ecosystem, and prepare a brief report.
Collect information about your nearby ecosystem which may be a park, a terrace
garden, a river, an agricultural field, a forest, or even an aquarium in your house.
Prepare a power point presentation or a scrap book or an illustrated report with
photographs/ pictures (from books/journals/internet etc.) or relevant tables or data.
You need to include following information to prepare your project report:
(i) Name of the place (Village/Town/City)
(ii) Kind of ecosystem

a. Natural ecosystem
b. Human modified ecosystem
(iii) Specific characteristics of ecosystem
(iv) Major components of ecosystem
(v) Advantages of an ecosystem
(vi) Comments on impact of human activities, if any

Survey to your household energy use, and ways to minimize its waste. 

This project will help you to assess the energy consumption; money spent on energy
sources, and minimizes the wastage of energy. You can prepare a questionnaire to
collect data related to energy resource used, its consumption level, mode of wastage
of different resources, and suggestion to minimize the wastage. Present your relevant
data in a tabular form or write a brief report up to 200 words. You may also use
photographs/ pictures/ drawing of appliances that are being used at your home.
Sample questionnaire is as follows:
(i) Name and Address:
(ii) Various types of energy used at your home:
(iii) Monthly electricity bill: A photocopy of previous bill
(iv) Amount of paid bill:
(v) List out electric appliances used in daily life at your home.
(vi) Suggestions to give your family members to save energy.
You can write all information in tabular form. Sample table is as follows:
Sources of energy Appliances using the
energy resources
Money spent for each
sources per month
Note: You can also take help from the lesson-18 and 31-B of your Environmental
Science course book or any other resources for preparation of your
questionnaire, and report.

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