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Q. No.Identify the incorrect statement regarding cyanobacteria:
1.
They have chlorophyll a (similar to green plants)
2.
They are unicellular and never colonial or filamentous
3.
They often form blooms in polluted water bodies
4.
Some of them can fix atmospheric nitrogen
Subtopic: Kingdom Monera: Bacterial Classification |
90%
From NCERT
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The chief ‘producers’ in the oceans are:
1. Cyanobacteria
2. Dinoflagellates
3. Diatoms
4. Lichens
Subtopic: Kingdom Protista: Chrysophytes |
94%
From NCERT
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Slime molds:
| 1. | form plasmodium that differentiates and forms fruiting bodies bearing spores at their tips during unfavourable conditions. |
| 2. | form plasmodium that differentiates and forms fruiting bodies bearing spores at their tips during favourable conditions. |
| 3. | form plasmodium under favourable conditions and the plasmodium differentiates and forms fruiting bodies bearing spores at their tips during unfavourable conditions. |
| 4. | form plasmodium under unfavourable conditions and the plasmodium differentiates and forms fruiting bodies bearing spores at their tips during favourable conditions. |
Subtopic: Kingdom Protista: Slime Moulds |
59%
From NCERT
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In the five kingdom classification, the members of Kingdom Animalia:
| I: | are all heterotrophs |
| II: | are all multicellular where cells lack a cell wall |
1. Only I is correct
2. Only II is correct
3. Both I and II are correct
4. Both I and II are incorrect
Subtopic: Different Classification Systems |
87%
From NCERT
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Gonyaulax is:
| 1. | a heterotrophic bacteria pathogenic to cereal crops |
| 2. | a dinoflagellate responsible for red tides |
| 3. | a free living nematode |
| 4. | a thermophilic archaebacterium |
Subtopic: Kingdom Protista: Dinoflagellates |
96%
From NCERT
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That viruses could be crystallised and crystals consist largely of proteins was shown by:
1. M. W. Beijerinck
2. W. M. Stanley
3. Dmitri Ivanovsky
4. Louis Pasteur
Subtopic: Virus, Viroids & Prions |
88%
From NCERT
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All the following given differences between fungi belonging to Phycomycetes and Basidiomycetes are correct except:
| Phycomycetes | Basidiomycetes | ||
| 1. | Mycelium | Branched and septate | Aseptate and coenocytic |
| 2. | Asexual spores | Zoospores or aplanospores | Generally not found |
| 3. | Notable examples | Bread mould and Albugo | Rust and Smut fungi |
| 4. | Dikaryon stage |
Not seen | Present |
Subtopic: Kingdom Fungi: Basidomycetes | Kingdom Fungi: Phycomycetes |
81%
From NCERT
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The correct chronological sequence [beginning from the earliest] with respect to fungal sexual cycle will be:
1. Karyogamy, Plasmogamy and Meiosis
2. Meiosis, Plasmogamy and Karyogamy
3. Plasmogamy, Karyogamy and Meiosis
4. Meiosis, Karyogamy and Plasmogamy
Subtopic: Kingdom Fungi: Sexual Reproduction in Fungi |
85%
From NCERT
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In the given diagram showing filamentous Nostoc, the structure marked as A:
| 1. | is a resting spore |
| 2. | is involved in nitrogen fixation |
| 3. | is gas vacuole |
| 4. | is where carbon dioxide concentration mechanism is applied |
Subtopic: Kingdom Monera: Bacterial Classification |
95%
From NCERT
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Consider the two given 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 incorrect
4. Statement I is incorrect; Statement II is correct
| Statement I: | Association between mycobiont and phycobiont is found in Lichens. |
| Statement II: | An association between roots of higher plants and fungi is called mycorrhiza. |
2. Statement I is correct; Statement II is correct
3. Statement I is incorrect; Statement II is incorrect
4. Statement I is incorrect; Statement II is correct
Subtopic: Mycorrhiza | Lichens |
91%
From NCERT
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