Both Archaebacteria and Eubacteria:
I. have a similar structure of cell wall
II. are members of Kingdom Monera
1. Only I is correct
2. Only II is correct
3. Both I and II are correct
4. Both I and II are incorrect
Cyanobacteria:
I. | are also referred to as ‘blue green algae’. |
II. | are photosynthetic autotrophs with chlorophyll a similar to green plants. |
III. | often form blooms in polluted water bodies. |
IV. | some of them can fix atmospheric nitrogen in specialised cells called hetrocysts. |
In light of the above given statements:
1. | Only I, II and IV are correct | 2. | Only I, II and III are correct |
3. | All statements are correct | 4. | Only I and III are correct |
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1. | They are important decomposers. |
2. | They are helpful in making curd from milk, production of antibiotics and fixing nitrogen in legume roots. |
3. | Some are pathogens causing damage to human beings, crops, farm animals and pets. |
4. | Almost all help in recycling nutrients like nitrogen, phosphorus, iron and sulphur. |
In NCERT textbook which of the following are not included in Kingdom Protista?
1. | Chrysophytes | 2. | Dinoflagellates |
3. | Protozoa | 4. | Blue green algae |
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Consider the given statements regarding slime moulds:
Statement I: | Under unfavourable conditions they form a plasmodium. |
Statement II: | During favourable conditions, the plasmodium differentiates and forms fruiting bodies bearing spores at their tips. |
Statement III: | The spores bear true walls. |
Statement IV: | The spores are dispersed by water. |
1. Only Statement I and Statement II are correct
2. Only Statement III is correct
3. All statements are incorrect
4. Only Statement III and Statement IV are correct
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Identify the incorrect statement regarding body organization in fungi:
1. | With the exception of yeast, fungi are filamentous. |
2. | Their bodies consist of long, slender hyphae that may be coenocytic or septate. |
3. | The network of hyphae is known as the mycelium. |
4. | The cell walls of fungi lack chitin and polysachharides. |
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Which of the following is not used in asexual reproduction in fungi?
1. | Conidia | 2. | Sporangiospores |
3. | Zoospores | 4. | Ascospores |
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Mucor, Rhizopus [the bread mould] and Albugo [the parasitic fungi on mustard] belong to:
1. | Phycomycetes | 2. | Ascomycetes |
3. | Basidiomycetes | 4. | Deuteromycetes |
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Which of the following is not true regarding members of Dueteromycetes?
1. | Mycelium is septate and branched. |
2. | Many are decomposers and help in mineral cycling. |
3. | They reproduce only by asexual spores called as conidia. |
4. | They include Agaricus, Claviceps and Colletotrichum. |
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I: | Bladderwort and Venus flytrap are insectivorous. |
II: | Cuscuta is parasitic. |
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