AARPAN INSTITUTE
BHANDARA
Test / Exam Name: Our Environment Standard: 10th Subjec
Student Name: Section: Roll No
Questions: 2
Instructions
1. ATTEMPT ALL THE QUESTION
SECTION A. MULTIPLE CHOICE QUESTION
Q1.In the following questions, a statement of Assertion is given by the correspon
statement of Reason. Of the statements, mark the correct answer as
1. If both Assertion and Reason are true and Reason is the correct explanatio
Assertion.
2. If both Assertion and Reason are true, but Reason is not the correct
explanation of Assertion.
3. If Assertion is true, but Reason is false.
4. If Assertion is false, but Reason is true.
5. If Assertion and Reason both are false.
Assertion: Ozone layer shields the surface of Earth from UV radiations.
Reason: The UV radiations are highly damaging to organisms.
Q2.In the following questions, a statement of Assertion is given by the correspon
statement of Reason. Of the statements, mark the correct answer as
1. If both Assertion and Reason are true and Reason is the correct explanatio
Assertion.
2. If both Assertion and Reason are true, but Reason is not the correct
explanation of Assertion.
3. If Assertion is true, but Reason is false.
4. If Assertion is false, but Reason is true.
5. If Assertion and Reason both are false.
Assertion: Biotic components of an ecosystem include all the living organisms
present in that ecosystem.
Reason: Biotic components also include wind, gases, light, etc.
Q3.For two statements are given- one labelled Assertion (A) and the other
labelled Reason (R). Select the correct answer to these questions from the cod
(a), (b), (c) and (d) as given below:
1. Both A and R are true, and R is correct explanation of the assertion.
2. Both A and R are true, but R is not the correct explanation of the assertion
3. A is true, but R is false.
4. A is false, but R is true.
, For two statements are given- one labelled Assertion (A) and the other
labelled Reason (R). Select the correct answer to these questions from the codes
(a), (b), (c) and (d) as given below:
1. Both A and R are true, and R is correct explanation of the assertion.
2. Both A and R are true, but R is not the correct explanation of the assertion.
3. A is true, but R is false.
4. A is false, but R is true.
Assertion: A food chain comprises of producers and consumers.
Reason: Consumers can be herbivores, carnivores and omnivores.
Q6.The ten per cent law is associated with:
1. Transfer of energy from various trophic levels to decomposers in a food ch
2. Transfer of ATP energy into muscular energy.
3. Transfer of chemical energy from one organism to another.
4. Transfer of sun's energy to the organisms called producers.
Q7.If the energy available at the producer level in a food chain is 150J, how much
energy will be transferred to: tertiary consumer?
1. 15J.
2. 10J.
3. 1.50J.
4. 0.15J.
Q8.In addition to wheat plants, a crop field ecosystem has organisms such as snak
peacock, eagle and mice. If the wheat plants are sprayed with pesticides
periodically, which of the following will have the minimum concentration of
pesticides in the body?
1. Snake.
2. Eagle.
3. Mice.
4. Peacock.
Q9.The harmful chemical which is accumulating in human beings through food ch
is:
1. Benzenehexachloride.
2. Dichlorodiphenyltrichloroethane.
3. Chlorofluorocarbon.
4. Abscisic acid.
Q10.The diagram represents the flow of substances within a balanced ecosystem
boxes are various trophic levels. Which box represents the producers?
1. B
2. D
BHANDARA
Test / Exam Name: Our Environment Standard: 10th Subjec
Student Name: Section: Roll No
Questions: 2
Instructions
1. ATTEMPT ALL THE QUESTION
SECTION A. MULTIPLE CHOICE QUESTION
Q1.In the following questions, a statement of Assertion is given by the correspon
statement of Reason. Of the statements, mark the correct answer as
1. If both Assertion and Reason are true and Reason is the correct explanatio
Assertion.
2. If both Assertion and Reason are true, but Reason is not the correct
explanation of Assertion.
3. If Assertion is true, but Reason is false.
4. If Assertion is false, but Reason is true.
5. If Assertion and Reason both are false.
Assertion: Ozone layer shields the surface of Earth from UV radiations.
Reason: The UV radiations are highly damaging to organisms.
Q2.In the following questions, a statement of Assertion is given by the correspon
statement of Reason. Of the statements, mark the correct answer as
1. If both Assertion and Reason are true and Reason is the correct explanatio
Assertion.
2. If both Assertion and Reason are true, but Reason is not the correct
explanation of Assertion.
3. If Assertion is true, but Reason is false.
4. If Assertion is false, but Reason is true.
5. If Assertion and Reason both are false.
Assertion: Biotic components of an ecosystem include all the living organisms
present in that ecosystem.
Reason: Biotic components also include wind, gases, light, etc.
Q3.For two statements are given- one labelled Assertion (A) and the other
labelled Reason (R). Select the correct answer to these questions from the cod
(a), (b), (c) and (d) as given below:
1. Both A and R are true, and R is correct explanation of the assertion.
2. Both A and R are true, but R is not the correct explanation of the assertion
3. A is true, but R is false.
4. A is false, but R is true.
, For two statements are given- one labelled Assertion (A) and the other
labelled Reason (R). Select the correct answer to these questions from the codes
(a), (b), (c) and (d) as given below:
1. Both A and R are true, and R is correct explanation of the assertion.
2. Both A and R are true, but R is not the correct explanation of the assertion.
3. A is true, but R is false.
4. A is false, but R is true.
Assertion: A food chain comprises of producers and consumers.
Reason: Consumers can be herbivores, carnivores and omnivores.
Q6.The ten per cent law is associated with:
1. Transfer of energy from various trophic levels to decomposers in a food ch
2. Transfer of ATP energy into muscular energy.
3. Transfer of chemical energy from one organism to another.
4. Transfer of sun's energy to the organisms called producers.
Q7.If the energy available at the producer level in a food chain is 150J, how much
energy will be transferred to: tertiary consumer?
1. 15J.
2. 10J.
3. 1.50J.
4. 0.15J.
Q8.In addition to wheat plants, a crop field ecosystem has organisms such as snak
peacock, eagle and mice. If the wheat plants are sprayed with pesticides
periodically, which of the following will have the minimum concentration of
pesticides in the body?
1. Snake.
2. Eagle.
3. Mice.
4. Peacock.
Q9.The harmful chemical which is accumulating in human beings through food ch
is:
1. Benzenehexachloride.
2. Dichlorodiphenyltrichloroethane.
3. Chlorofluorocarbon.
4. Abscisic acid.
Q10.The diagram represents the flow of substances within a balanced ecosystem
boxes are various trophic levels. Which box represents the producers?
1. B
2. D
