Energy Flow

Q. What are the differences between flow of matter and of energy in an ecosystem?

Q. Which of the following factor decreases as food chain proceed?

1. Pressure
2. Energy
3. Nutrition
4. Temperature

Q. Do Earth has nuclear reactions inside core?

Q.

Is energy conserved in an ecosystem?

Q. There is no loss of energy when energy is transferred from one form to another.

1. True

2. False

Q. In the following food chain, plants provide $500J$ of energy to rats. How much energy will be available to hawks from snakes?
$Plants\to Rats\to Snakes\to Hawks$

Q.

Food chain represents linear flow of energy.

1. True
2. False

Q. Assertion :All food chains will come to stand still if bacteria disappear from earth. Reason: Bacteria are only associated with the soil fertility and hardly have any role in food chains.

1. Both Assertion and Reason are correct and Reason is the correct explanation for Assertion.
2. Both Assertion and Reason are correct but Reason is not the correct explanation for Assertion.
3. Assertion is correct but Reason is incorrect.
4. Assertion is incorrect but Reason is correct.

Q. A food chain in an ecosystem represents the __________________.
(you may choose multiple options.)

1. Biotic components only
2. energy flow and transfer of nutrients
3. Both (a) and (b)
4. abiotic components and decomposers

Q. What are the differences between flow of matter and of energy in an ecosystem?