Plants of this group are diploid and well adapted to extreme conditions. They grow bearing sporophylls in compact structures called cones. The group in reference is
1. | Monocots | 2. | Dicots |
3. | Pteridophytes | 4. | Gymnosperms |
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Protonema is
1. Haploid and is found in mosses
2. Diploid and is found is liverworts
3. Diploid and is found in pteridophytes
4. Haploid and is found in pteridophytes
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The giant Redwood tree (Sequoia sempervirens) is a/an
1. | Angiosperm | 2. | Free fern |
3. | Pteridophyte | 4. | Gymnosperm |
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What is not true for mosses?
1. | Sporophyte is less elaborate than liverworts |
2. | Protonema stage develops directly from a spore |
3. | Leafy stage develops from a secondary protonema as a lateral bud |
4. | They are attached to soil through multicellular and branched rhizoids |
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Antheridium of bryophytes produce _______ antherozoids.
1. | Non-motile | 2. | Uni-flagellate |
3. | Biflagellate | 4. | Ciliate |
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How many of the given features will be true for brown algae:
I. Presence of xanthophylls
II. A gelatinous coating of algin on cell wall
III. A centrally placed vacuole in plastids
IV. Ribbon shaped biflagellate zoospores
1. | 1 | 2. | 2 |
3. | 3 | 4. | 4 |
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What is the function of the gemmae produced by some liverworts?
1. a water gathering structure
2. a light gathering structure
3. a sexual structure
4. an asexual structure
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The life cycle of Ectocarpus, Polysiphonia and kelps is:
1.Diplontic
2.Haplontic
3.Aplantic
4.Haplo-diplontic
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Bryophytes are attached to the substratum by rhizoids that are:
1. Unicellular | 2. Multicellular |
3. Acellular | 4. Unicellular or multicellular |
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Ecologically important first colonizers of rocks are:
1. | Lichens | 2. | Algae |
3. | Gymnosperms | 4. | Angiosperms |
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