Assertion(A): Archaebacteria are special bacteria.
Reason(R): They live in harsh habitats.
1. Both (A) and (R) are true and (R) is the correct explanation of (A).
2. Both (A) and (R) are true, but (R) is not the correct explanation of (A).
3. (A) is true, but (R) is false.
4. (A) is false, but (R) is true.

Subtopic:  Kingdom Monera: Bacterial Classification |
 79%
From NCERT
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Assertion(A): The RNA of the viroid is of low molecular weight.
Reason(R): This RNA is able to cause neurological diseases in humans.
Choices for Assertions and reasons:
1. Both (A) and (R) are true and (R) is the correct explanation of (A).
2. Both (A) and (R) are true, but (R) is not the correct explanation of (A).
3. (A) is true, but (R) is false.
4. (A) is false, but (R) is true.
Subtopic:  Virus, Viroids & Prions |
 60%
From NCERT
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Assertion(A): Viruses are smaller than bacteria.
Reason(R): Viruses pass through bacteria-proof filters.
Choices for Assertions and reasons:
1. Both (A) and (R) are true and (R) is the correct explanation of (A).
2. Both (A) and (R) are true, but (R) is not the correct explanation of (A).
3. (A) is true, but (R) is false.
4. (A) is false, but (R) is true.
Subtopic:  Virus, Viroids & Prions |
From NCERT
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Assertion(A): Deuteromycetes are called imperfect fungi.
Reason(R): These fungi undergo only asexual form of reproduction.
Choices for Assertions and reasons:
1. Both (A) and (R) are true and (R) is the correct explanation of (A).
2. Both (A) and (R) are true, but (R) is not the correct explanation of (A).
3. (A) is true, but (R) is false.
4. (A) is false, but (R) is true.
Subtopic:  Kingdom Fungi: Deuteromycetes |
From NCERT
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Assertion(A): Ciliated protozoans are passively moving aquatic organisms.
Reason(R): They have a cavity (gullet) that opens to the outside of the cell surface.
Choices for Assertions and reasons:
1. Both (A) and (R) are true and (R) is the correct explanation of (A).
2. Both (A) and (R) are true, but (R) is not the correct explanation of (A).
3. (A) is true, but (R) is false.
4. (A) is false, but (R) is true.
Subtopic:  Protozoa |
From NCERT
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Assertion(A): Fungi are saprophytes.
Reason(R): They are heterotrophic and absorb soluble inorganic matter from dead substrates.
Choices for Assertions and reasons:
1. Both (A) and (R) are true and (R) is the correct explanation of (A).
2. Both (A) and (R) are true, but (R) is not the correct explanation of (A).
3. (A) is true, but (R) is false.
4. (A) is false, but (R) is true.
Subtopic:  Kingdom Fungi: Introduction |
From NCERT
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Assertion(A): Kingdom Protista has brought together Chlamydomonas, Chlorella with Paramoecium and Amoeba.
Reason(R): The criteria of classification got changed over the time.
Choices for Assertions and reasons:
1. Both (A) and (R) are true and (R) is the correct explanation of (A).
2. Both (A) and (R) are true, but (R) is not the correct explanation of (A).
3. (A) is true, but (R) is false.
4. (A) is false, but (R) is true.
Subtopic:  Different Classification Systems |
 61%
From NCERT
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Assertion(A): Plant and animal kingdoms have been constant under all different classification systems.
Reason(R): The unde-rstanding of what groups/organisms are included under these kingdoms have been changing over the time.
Choices for Assertions and reasons:
1. Both (A) and (R) are true and (R) is the correct explanation of (A).
2. Both (A) and (R) are true, but (R) is not the correct explanation of (A).
3. (A) is true, but (R) is false.
4. (A) is false, but (R) is true.
Subtopic:  Different Classification Systems |
 51%
From NCERT
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Assertion(A): The two kingdom classification used for a long time was found inadequate.
Reason(R): This system did not distinguish between the eukaryotes and prokaryotes, unicellular and multicellular organisms and photosynthetic (green algae) and non-photosynthetic (fungi) organisms.
Choices for Assertions and reasons:
1. Both (A) and (R) are true and (R) is the correct explanation of (A).
2. Both (A) and (R) are true, but (R) is not the correct explanation of (A).
3. (A) is true, but (R) is false.
4. (A) is false, but (R) is true.
Subtopic:  Different Classification Systems |
 91%
From NCERT
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Match the bacteria in Column I with its shape in Column II and select the correct option from the codes given below:

COLUMN I   COLUMN II
A. Bacillus a. Rod
B. Coccus b. Spherical
C. Spirilla c. Spiral
D. Vibrio d. Comma

Codes
 A  B  C  D
1.   a  b  c  d
2.  b   a  c  d
3.  a  d  c  b
4.   b   a   d  c
Subtopic:  Kingdom Monera: Bacterial Classification |
 92%
From NCERT
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