In which of the following alga you do not expect to see flagellated structures during their entire life cycle?
1. Porphyra
2. Ectocarpus
3. Ulothrix
4. Laminaria
Subtopic: Â Pheophyceae: Brown Algae |
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Identify the correctly matched pair:
| 1. | Isogamy with flagellated gametes | Volvox |
| 2. | Isogamy with non-flagellated gametes | Ulothrix |
| 3. | Anisogamy | Udorina |
| 4. | Oogamy | Spirogyra |
Subtopic: Â Algae |
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The cell wall of the cells of an alga has cellulose and algin. Another feature expected in this alga would be:
| 1. | Floridean starch as stored food |
| 2. | Phycoerythrin in addition to chlorophyll a, c |
| 3. | 2, unequal, lateral flagellar insertions |
| 4. | Polysulphate esters in cell wall |
Subtopic: Â Pheophyceae: Brown Algae |
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An alga lacks flagellar insertions in its life cycle and stores food as floridean starch. This alga can be:
| 1. | Chara | 2. | Fucus |
| 3. | Porphyra | 4. | Ectocarpus |
Subtopic: Â Rhodophyceae: Red Algae and Importance of Algae |
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Level 1: 80%+
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Marchantia and Funaria are similar in:
1. having multicellular branched rhizoids
2. dorsoventrally flattened plant body
3. asexual reproduction by gemmae
4. dominant gametophyte in the life cycle
1. having multicellular branched rhizoids
2. dorsoventrally flattened plant body
3. asexual reproduction by gemmae
4. dominant gametophyte in the life cycle
Subtopic: Â Bryophytes |
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Level 2: 60%+
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In pteridophytes, Selaginella:
| 1. | has macrophylls |
| 2. | stobili or cones are not seen |
| 3. | is hetrosporous |
| 4. | lacks vascular tissue |
Subtopic: Â Pteridophytes |
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In algae with haplontic life cycle:
| I: | there are no free-living sporophytes |
| II: | mitosis in zygote results in diploid spores |
| III: | gametophyte is the dominant photosynthetic phase |
| 1. | Only I and II are correct |
| 2. | Only I and III are correct |
| 3. | Only II and III are correct |
| 4. | Only II and III are correct |
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Sphagnum is a bryophyte, commonly called as bog moss or peat moss, that is used as packing material for trans-shipment of living materials because:
1. It is easily available
2. It is hygroscopic
3. It is hydrophobic
4. It prevents soil erosion
1. It is easily available
2. It is hygroscopic
3. It is hydrophobic
4. It prevents soil erosion
Subtopic: Â Bryophytes |
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Which of the following is true regarding the classes of Bryophytes?
| 1. | The thallus of mosses is dorsiventral and closely appressed to the surface |
| 2. | In the life cycle of liverworts, the predominant gametophytic stage is divided into two stages - the protonema and the leafy stage |
| 3. | The sporophyte in liverworts is more elaborate than in mosses |
| 4. | Asexual reproduction in liverworts takes place by fragmentation of thalli, or by the formation of specialised structures called gemmae |
Subtopic: Â Bryophytes (Liverworts) |
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The algae shown in the diagram below belongs to the class which has:
1. 2-8 equal and apical flagella
2. 2 unequal and lateral flagella
3. 2 unequal and apical flagella
4. 2-8 equal and lateral flagella
1. 2-8 equal and apical flagella
2. 2 unequal and lateral flagella
3. 2 unequal and apical flagella
4. 2-8 equal and lateral flagella
Subtopic: Â Algae |
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Level 1: 80%+
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