Q. No.Fusion of two gametes which are dissimilar in size is termed as
1. Oogamy
2. Isogamy
3. Anisogamy
4. Zoogamy
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A plant shows thallus level of organization. It shows rhizoids and is haploid. It needs water to complete its life cycle because the male gametes are motile. Identify the group to which it belongs to.
| 1. | Pteridophytes | 2. | Gymnosperms |
| 3. | Monocots | 4. | Bryophytes |
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A prothallus is
| 1. | A structure in pteridophytes formed before the thallus develops |
| 2. | A sporophytic free living structure formed in pteridophytes |
| 3. | A gametophyte free living structure formed in pteridophytes |
| 4. | A primitive structure formed after fertilization in pteriodophytes |
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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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