MCQs of Science Class 10 Chapter 13 Our Environment

MCQs of Science Chapter 13 Our Environment

MCQs

Science

Chapter 13 Our Environment

Class 10

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Which of these organisms are the most important decomposers in an ecosystem?

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Which of the following are environment friendly practices?

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The % of solar radiation absorbed by all green plants for photosynthesis is about ___________.

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Which of the following groups contain only biodegradable items ?

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The problem caused due to ozone hole is

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Animals that feed on other animals are called ___________.

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Organisms which synthesise carbohydrates from inorganic compounds using radiant energy are called

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____________ are the organisms which feed on dead plant.

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Which of the following is terrestrial ecosystem?

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Which of the following is an example non-biodegradable substance?

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Which of the following is not an example of abiotic factors?

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____ the temperature, higher would be the decomposition.

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An ecosystem includes

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The decomposers in an ecosystem

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Which of the following is the best way for disposal of vegetable and fruit peels?

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__________ is a biodegradable pollutant.

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Which human-made material cannot be broken down by the action of bacteria?

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Which of the following is biodegradable waste? 

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_________ can be defined as study of environment, living organisms and interaction among them.

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In a food chain, the third trophic level is always occupied by ___________.

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Which of the two sets belong to the same trophic level?

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Which of the following is an example biodegradable substance?

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Accumulation of non-biodegradable pesticides in the food chain in increasing amount at each higher trophic level is known as 

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Which of the following actions may not affect the environment in worse?

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Which of the following is an example of herbivores?

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Which is non biodegradable?

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The excessive exposure of humans to UV rays results in :

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Which of the following in not an effect of ultraviolet radiations?

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What will happen if deer is missing from the food chain : grass → deer → Tiger ?

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__________ is defined as the structure and properties of a particular area.

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How many atoms of oxygen are there in ozone?

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Which of the following is the full form of CFC? 

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Which of these is a greenhouse gas?

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Which of the following is an example of human made ecosystem?

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What is the nature of ozone?

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Which of the following is the full form of UNEP?

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In an ecosystem, the 10% of energy available for transfer from one trophic level to the next is in the form of

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Which of these does not belong to biotic component?

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Which of the following is a functional unit of environment?

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By which way autotrophs convert energy of food?

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Geophages feed on dead organic matter present ___________.

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Name the thing in our body which helps us to digest food?

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It which of the following devices CFC’s are not produced?

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When is the world environment day celebrated?

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The organisms of higher trophic level which feed on several types of organisms belonging to lower trophic level, constitute the _____________.

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In a given food chain if the amount of energy at the fourth trophic level is 6 kJ, what will be the energy available at the producer level?

47 / 55

If a grasshopper is eaten by frog, then the energy transfer will be from :

48 / 55

Which of the following constituents do not form ecosystem?

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Disposable plastics plates should not be used because ______________.

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Depletion of ozone is mainly due to ________

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Which of the following is proper sequence of trophic levels?

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Which is incorrect:

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Which of the following constitute the food chain?

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The flow of energy in ecosystem :

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In a given food chain the amount of energy at fourth trophic level is 5 KJ, what will be the energy at producer level ?

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