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Q. No.Read the following statements with respect to diatoms:
i. In diatoms, the cell walls form two thin overlapping shells which fit together as in a soap box
ii. The walls are embedded with silica and thus are indestructible
iii. The fossilized diatoms are called diatomaceous earth
iv. Diatoms are not the main producers in the oceans
v. Diatomaceous earth is used in polishing, filtration of oil and syrups
How many of the above statements is/are incorrect?
1. One
2. Four
3. Three
4. Two
Subtopic: Â Kingdom Protista: Chrysophytes |
 72%
From NCERT
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Read the following statements:
i. Majority of the slime moulds are freshwater organisms
ii. Dinoflagellates are mostly freshwater organisms
iii. Slime moulds form plasmodium
iv. Protozoans may be autotrophs
v. The spores of the slime moulds are dispersed by water current
How many of the above statements are incorrect?
1. Three
2. Two
3. Four
4. Five
i. Majority of the slime moulds are freshwater organisms
ii. Dinoflagellates are mostly freshwater organisms
iii. Slime moulds form plasmodium
iv. Protozoans may be autotrophs
v. The spores of the slime moulds are dispersed by water current
How many of the above statements are incorrect?
1. Three
2. Two
3. Four
4. Five
Subtopic: Â Kingdom Protista: Chrysophytes |Â Kingdom Protista: Dinoflagellates |
From NCERT
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Match the columns:
1. A = (iv) , B = (ii) , C = (iii), D = (i)
2. A = (i) , B = (iv) , C = (iii), D = (ii)
3. A = (i) , B = (ii) , C = (iii), D = (iv)
4. A = (iv) , B = (iii) , C = (i), D = (ii)
| Column -I | Column-II |
| A. Plasmodium | (i) Diatoms |
| B. Mixotrophic nutrition | (ii) Euglenoids |
| C. Red tide | (iii) Dinoflagellates |
| D. Oceanic chief producers | (iv) Slime moulds |
1. A = (iv) , B = (ii) , C = (iii), D = (i)
2. A = (i) , B = (iv) , C = (iii), D = (ii)
3. A = (i) , B = (ii) , C = (iii), D = (iv)
4. A = (iv) , B = (iii) , C = (i), D = (ii)
Subtopic: Â Kingdom Protista: Chrysophytes |Â Kingdom Protista: Euglenoids |Â Kingdom Protista: Slime Moulds |
 93%
From NCERT
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Read the following statements with respect to fungi:
i. Their body consists of long, slender thread-like structures called hyphae
ii. The network of hyphae is called mycelium
iii. Hyphae may be continuous tubes filled with multinucleated cytoplasm, these hyphae are coenocytic
iv. In many cases hyphae have septate or cross walls
v. The cell wall of fungi are composed by chitin and polysaccharides
How many of the above statements are correct?
1. One
2. Three
3. Four
4. Five
i. Their body consists of long, slender thread-like structures called hyphae
ii. The network of hyphae is called mycelium
iii. Hyphae may be continuous tubes filled with multinucleated cytoplasm, these hyphae are coenocytic
iv. In many cases hyphae have septate or cross walls
v. The cell wall of fungi are composed by chitin and polysaccharides
How many of the above statements are correct?
1. One
2. Three
3. Four
4. Five
Subtopic: Â Kingdom Fungi: Introduction |
 86%
From NCERT
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Read the following statements:
i. When fungus reproduces sexually, two haploid hyphae of compatible mating types come together and fuse
ii. In some fungi the fusion of two haploid cells immediately results in diploid cell
iii. In fungi of class the Ascomycetes and Basidiomycetes, an intervening dikaryotic stage (n + n i.e., two nuclei per cell) occurs
iv. The dikaryotic cell may show the fusion of nuclei to form diploid cell
v. The fungi of class Ascomycetes and Basidiomycetes have aseptate hyphae
How many of the above statements are correct?
1. Five
2. Four
3. Three
4. One
i. When fungus reproduces sexually, two haploid hyphae of compatible mating types come together and fuse
ii. In some fungi the fusion of two haploid cells immediately results in diploid cell
iii. In fungi of class the Ascomycetes and Basidiomycetes, an intervening dikaryotic stage (n + n i.e., two nuclei per cell) occurs
iv. The dikaryotic cell may show the fusion of nuclei to form diploid cell
v. The fungi of class Ascomycetes and Basidiomycetes have aseptate hyphae
How many of the above statements are correct?
1. Five
2. Four
3. Three
4. One
Subtopic: Â Kingdom Fungi: Introduction |
 67%
From NCERT
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Read the following statements with respect to the class Ascomycetes of fungi:
i. These are commonly called sac fungi
ii. These are mostly multicellular
iii. They are saprotrophic, decomposers, parasitic or coprophilous
iv. Their mycelium is aseptate
v. Conidia produced by them are endogenous
How many of the above statements are incorrect?
1. Two
2. Three
3. Four
4. Five
i. These are commonly called sac fungi
ii. These are mostly multicellular
iii. They are saprotrophic, decomposers, parasitic or coprophilous
iv. Their mycelium is aseptate
v. Conidia produced by them are endogenous
How many of the above statements are incorrect?
1. Two
2. Three
3. Four
4. Five
Subtopic: Â Kingdom Fungi: Ascomycetes |
From NCERT
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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
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%
From NCERT
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Match the columns:
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)
| Column-I | Column-II |
| A. Ascomycetes | (i) Club fungi |
| B. Basidiomycetes | (ii) Sac fungi |
| C. Deuteromycetes | (iii) Algae fungi |
| D. Phycomycetes | (iv) Fungi imperfecti |
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)
Subtopic: Â Kingdom Fungi: Deuteromycetes |Â Kingdom Fungi: Zygomycetes |Â Kingdom Fungi: Ascomycetes |Â Kingdom Fungi: Basidomycetes |
 94%
From NCERT
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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
(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%
From NCERT
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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
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 |
From NCERT
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