Home
Class 12
BIOLOGY
Assertion: Rotenone is a bioinsecticide....

Assertion: Rotenone is a bioinsecticide.
Reason: Rotenone is obtained from living organisms and is employed to kill bacteria.

A

If both Assertion and Reason are true and the Reason is the correct explanation of the Assertion

B

If both Assertion and Reason are true and the Reason is not the correct explanation of the Assertion.

C

If Assertion is true but the Reason is false.

D

If both Assertion and Reason are false.

Text Solution

AI Generated Solution

The correct Answer is:
To analyze the given assertion and reason, we can break it down into steps: ### Step 1: Understand the Assertion - The assertion states that "Rotenone is a bioinsecticide." - This means that Rotenone is a natural insecticide derived from biological sources. ### Step 2: Understand the Reason - The reason states that "Rotenone is obtained from living organisms and is employed to kill bacteria." - This indicates that Rotenone is sourced from plants and has antibacterial properties. ### Step 3: Verify the Assertion - Rotenone is indeed recognized as a bioinsecticide. It is derived from the roots of the plant *Derris elliptica* and is used to control insect pests. Therefore, the assertion is true. ### Step 4: Verify the Reason - Rotenone is obtained from living organisms, specifically from the roots of *Derris elliptica*. However, while it is used as an insecticide, its primary use is not to kill bacteria but to target insects. Thus, the statement about it being employed to kill bacteria is misleading. Therefore, the reason is partially true but not entirely accurate regarding its primary use. ### Step 5: Conclusion - Since the assertion is true, but the reason is not a correct explanation of the assertion (as it misrepresents the primary use of Rotenone), we conclude that: - The assertion is true. - The reason is true but does not correctly explain the assertion. ### Final Answer - The assertion is true, but the reason is not a correct explanation for the assertion. ---
Promotional Banner

Topper's Solved these Questions

  • MICROBES IN HUMAN WELFARE

    ICSE|Exercise COMPETITION CORNER (OBJECTIVE TYPE QUESTIONS (MULTIPLE CHOICE QUESTIONS))|44 Videos
  • ISC BOARD PAPER (2019 -BIOLOGY)

    ICSE|Exercise PART-II ( SECTION-C)|12 Videos
  • MOLECULAR BASIS OF INHERITANCE

    ICSE|Exercise MCQ (Source Based Questions)|23 Videos

Similar Questions

Explore conceptually related problems

Rotenone ,a natural insecticide ,is obtained from

Assertion : Papaver somniferum is cultivated to obtain drugs. Reason : Morphine is obtained from its latex.

Assertion: All the living organisms have certain basic similarities. Reason: The living organisms have monophyletic ancestory.

Assertion: Louis pasteur showed that in flask open to air, new living organisms appeared in the heat killed yeast culture. Reason: Life arise from pre-existing life.

Assertion: Consciousness is considered as defining property of living organism Reason : All organisms from prokaryotes to most complex eukaryotes can sense and respond to environmental stimuli

Assertion: Polyhedrovirus is called a baculovirus. Reason: Nucleopolyhedrovirus is employed to control Bacillus bacteria.

Some chemosynthetic bacteria use energy obtained from oxidising

Assertion: Euglena is an organisms with a controversial position in classification of living organisms. Reason: Euglena has parasitic nutrition.

Assertion : Consciousness is a defining property of living organisms. Reason : Human being is the only organism that has self consiousness.

Assertion: That branch of science which deals with the study of living organisms is called Biology. Reason: Living organisms always have cellular organisation, which may be unicellular or multicellular.