Read the following statements with respect to Basidiomycetes:
i. Sex organs are commonly present
ii. Plasmogamy is brought about by the fusion of two vegetative or somatic cells of different strains or genotypes
iii. The dikaryotic structure may give rise to the basidium
iv. Karyogamy and Meiosis take place in the basidium producing four ascospores
v. The basidiospores are exogenously produced on the basidium
How many of the above statements are correct?
1. Three
2. Four
3. Two
4. Five
Subtopic: Â Kingdom Fungi: Basidomycetes |
 62%
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1. A = (i) , B = (iv) , C= (ii) , D= (iii)
2. A = (iv) , B = (iii) , C= (i) , D= (ii)
3. A = (i) , B = (iii) , C= (iv) , D= (ii)
4. A = (ii) , B = (i) , C= (iv) , D= (iii)
Read the following statements about viroids:
(i) These were discovered by T.O Diener
(ii) These are of high molecular weight
(iii) Their RNA is of low molecular weight
(iv) May possess capsid
How many of the above statements are correct?
1. Two
2. One
3. Four
4. Three
Subtopic: Â Virus, Viroids & Prions |
 82%
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Assertion: Cyanobacteria are photosynthetic blue-green algae with all prokaryotic structures
Reason: They are green due to the presence of chloroplasts
1. If both assertion and reason are true and the reason is the correct explanation of the assertion
2. If both assertion and reason are true and the reason is not the correct explanation of the assertion
3. If assertion is true but reason is false
4. If both assertion and reason are false statement
Subtopic: Â Kingdom Monera: Introduction |
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Assertion: The spores of 'consumer-decomposer' protists contain spores cellulosic cell wall
Reason: These spores are dispersed by wind
1. If both assertion and reason are true and the reason is the correct explanation of the assertion
2. If both assertion and reason are true and the reason is not the correct explanation of the assertion
3. If assertion is true but reason is false
4. If both assertion and reason are false statement
Subtopic: Â Kingdom Protista: Chrysophytes |
 64%
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Assertion: The archaebacteria can survive in harish habitats
Reason: These bacteria contain a different cell wall structure
1. If both assertion and reason are true and the reason is the correct explanation of the assertion
2. If both assertion and reason are true and the reason is not the correct explanation of the assertion
3. If assertion is true but reason is false
4. If both assertion and reason are false statement
Subtopic: Â Kingdom Monera: Introduction |
 91%
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Assertion: Mycoplasma is pathogenic both to animas and plants
Reason: These organisms lack cell wall and can survive without oxygen
1. If both assertion and reason are true and the reason is the correct explanation of the assertion
2. If both assertion and reason are true and the reason is not the correct explanation of the assertion
3. If assertion is true but reason is false
4. If both assertion and reason are false statement
Subtopic: Â Kingdom Monera: Actinomycetes & Mycoplasma |
 66%
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Assertion: Viruses are obligate parasites
Reason: Viruses cannot propagate outside the host cell
1. If both assertion and reason are true and the reason is the correct explanation of the assertion
2. If both assertion and reason are true and the reason is not the correct explanation of the assertion
3. If assertion is true but reason is false
4. If both assertion and reason are false statement
Subtopic: Â Virus, Viroids & Prions |
 82%
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Assertion: Cell wall of diatoms are indestructible
Reason: Cell wall of diatoms possesss silica
1. If both assertion and reason are true and the reason is the correct explanation of the assertion
2. If both assertion and reason are true and the reason is not the correct explanation of the assertion
3. If assertion is true but reason is false
4. If both assertion and reason are false statement
Subtopic: Â Kingdom Protista: Chrysophytes |
 94%
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Assertion: Viroids are different from viruses
Reason: Viroids lack capsid but viruses posses capsid
1. Both assertion and reason are true and the reason is the correct explanation of the assertion
2. Both assertion and reason are true and the reason is not the correct explanation of the assertion
3. The assertion is true but the reason is false
4. Both assertion and reason are false statements
Subtopic: Â Virus, Viroids & Prions |
 82%
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