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Q. No.Why are lichens considered excellent indicators of air pollution?
1.
They thrive in environments with high concentrations of nitrogen and sulphur compounds.
2.
They are sensitive to airborne pollutants, which disrupt their symbiotic relationship.
3.
They absorb heavy metals from the environment promoting their growth.
4.
They can metabolize and break down organic pollutants in the air.
Subtopic: Lichens |
89%
From NCERT
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Match the following organisms with their respective kingdoms:
1. 1-D, 2-A, 3-C, 4-B
2. 1-B, 2-C, 3-D, 4-A
3. 1-D, 2-C, 3-B, 4-A
4. 1-C, 2-D, 3-A, 4-B
| Column I | Column II | ||
| 1 | Spirogyra | A | Monera |
| 2 | Aspergillus | B | Protista |
| 3 | Paramecium | C | Fungi |
| 4 | E. coli | D | Plantae |
1. 1-D, 2-A, 3-C, 4-B
2. 1-B, 2-C, 3-D, 4-A
3. 1-D, 2-C, 3-B, 4-A
4. 1-C, 2-D, 3-A, 4-B
Subtopic: Kingdom Monera: Introduction | Kingdom Protista: Introduction | Kingdom Fungi: Introduction |
91%
From NCERT
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Which of the following features is not a characteristic generally found in the fungi kingdom?
1. Cell walls made of cellulose
2. Heterotrophic mode of nutrition
3. Ability to reproduce sexually and asexually
4. Presence of chitin in cell walls
1. Cell walls made of cellulose
2. Heterotrophic mode of nutrition
3. Ability to reproduce sexually and asexually
4. Presence of chitin in cell walls
Subtopic: Kingdom Fungi: Introduction |
95%
From NCERT
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Consider the given two statements:
| Assertion (A): | Archaea are often found in extreme environments like hot springs and salt pans due to their unique cell wall structure. |
| Reason (R): | The cell walls of Archaea contain peptidoglycan, which provides resistance to extreme conditions. |
| 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 |
From NCERT
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Match each item in Column I with one in Column II and select the best match as your answer from the codes given:
Codes:
| Column I | Column II | ||
| A | Archaebacteria | P | Some can fix atmospheric nitrogen in heterocysts |
| B | Cyanobacteria | Q | Include important decomposers and are most abundant bacteria |
| C | Mycoplasma | R | Include extremophiles and methanogens |
| D | Heterotrophic bacteria | S | Lack a cell wall and can live without oxygen |
| A | B | C | D | |
| 1. | P | R | Q | S |
| 2. | R | P | Q | S |
| 3. | R | P | S | Q |
| 4. | P | R | S | Q |
Subtopic: Kingdom Monera: Bacterial Classification |
93%
From NCERT
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Consider the given two statements:
1. Statement I is correct; Statement II is incorrect
2. Statement I is correct; Statement II is correct
3. Statement I is incorrect; Statement II is correct
4. Statement I is incorrect; Statement II is incorrect
| Statement I: | Ascospores are sexual spores and are produced endogenously. |
| Statement II: | Basidiospores are asexual spores and are produced exogenously. |
2. Statement I is correct; Statement II is correct
3. Statement I is incorrect; Statement II is correct
4. Statement I is incorrect; Statement II is incorrect
Subtopic: Kingdom Fungi: Ascomycetes | Kingdom Fungi: Basidomycetes |
66%
From NCERT
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What does "Basidiocarp" refer to in Basidiomycetes?
1. A type of hyphae
2. A sexual spore
3. The fruiting body
4. A mycelial network
1. A type of hyphae
2. A sexual spore
3. The fruiting body
4. A mycelial network
Subtopic: Kingdom Fungi: Basidomycetes |
85%
From NCERT
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Which of the following statements correctly describes a feature unique to the fungi classified under the phylum Ascomycetes?
| 1. | They are predominantly aquatic fungi with flagellated zoospores. |
| 2. | They reproduce sexually through the formation of basidiospores. |
| 3. | They possess a dikaryotic stage in their life cycle. |
| 4. | Their spores are typically produced internally in a sac-like structure called an ascus. |
Subtopic: Kingdom Fungi: Ascomycetes |
63%
From NCERT
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Consider the given two statements:
| Assertion (A): | Lichens are considered excellent indicators of air pollution. |
| Reason (R): | They thrive in polluted areas as they use the pollutants as nutrients. |
| 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 (R) |
| 3. | (A) is True but (R) is False |
| 4. | (A) is False but (R) is True |
Subtopic: Lichens |
92%
From NCERT
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Which of the following statements is/are correct regarding Archaea?
| 1. | Archaea have a similar cell wall structure to bacteria. |
| 2. | Archaea are known for their ability to survive in extreme conditions. |
| 3. | Archaea contain peptidoglycan in their cell wall composition. |
| 4. | Archaea have membrane bound organelles. |
Subtopic: Kingdom Monera: Bacterial Classification |
95%
From NCERT
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