Q. No.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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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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Evolutionarily, the first terrestrial plants to possess vascular tissues are:
| 1. | Bryophytes | 2. | Pteridophytes |
| 3. | Gnetales | 4. | Cycads |
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All the following are characteristics of bryophytes except:
1. spore producing
2. dominant gametophyte
3. lignified tissues
4. producing antheridium and archegonium
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What is not true regarding bryophytes?
1. Zygote undergoes reduction division immediately
2. Sporophyte is not free living
3. Haploid spores are produced by meiosis
4. The sex organs are multi-cellular
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The bryophyte with most economic importance will be:
| 1. | peat moss | 2. | liverwort |
| 3. | hornwort | 4. | Polytrichum |
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