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CBSE Notes 2011-2012 » X-Science-Term2

Our Environment

In an ecosystem, various organisms are linked forming interconnections such a condition is termed as

Multiple choice question

In an ecosystem, various organisms are linked forming
interconnections such a condition is termed as

A food chain comprising birds, green plants, fish and man. The concentration of harmful chemical ent...

Multiple choice question

A food chain comprising birds, green plants, fish and man.
The concentration of harmful chemical entering the food
chain will be maximum in

The transfer of energy through a terrestrial ecosystem is depicted by energy pyramids. Which of the ...

Multiple choice question

The transfer of energy through a terrestrial ecosystem is
depicted by energy pyramids. Which of the following
statements is true ?

First link in any food chain is usually green plants because

Multiple choice question

First link in any food chain is usually green plants because

Name one non-biodegradable waste which may pollute the earth to dangerous levels of toxicity, if not...

Multiple choice question

Name one non-biodegradable waste which may pollute the
earth to dangerous levels of toxicity, if not handled properly.

Which of the following statements about food chain and energy flow through ecosystem is false '?

Multiple choice question

Which of the following statements about food chain and
energy flow through ecosystem is false '?

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