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Q. No.The gametes are pyriform and bear two laterally attached flagella in:
1.
Chlorophyceae
2.
Phaeophyceae
3.
Rhodophyceae
4.
All algae
Subtopic: Pheophyceae: Brown Algae |
84%
Level 1: 80%+
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The term ‘strobilus’ in a gymnosperm defines a:
| 1. | collection of megasporophylls |
| 2. | collection of microsporophylls |
| 3. | site of sporangial development |
| 4. | collection of megasporophylls, microsporophylls and/or a site of sporangial development |
Subtopic: Gymnosperms |
77%
Level 2: 60%+
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The bryophytes are also called as the amphibians of plants kingdom mainly because:
| 1. | they respire through the moist epidermis |
| 2. | they depend on water for sexual reproduction |
| 3. | they require more water than most plants |
| 4. | they lack true roots |
Subtopic: Bryophytes |
92%
Level 1: 80%+
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Vegetative reproduction in mosses is by:
| 1. | Fragmentation and budding in secondary protonema |
| 2. | Only budding in secondary protonema |
| 3. | Adventitious roots and budding in secondary protonema |
| 4. | Fragmentation and budding in sporophyte |
Subtopic: Bryophytes |
85%
Level 1: 80%+
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The economic importance of bryophytes include:
| I: | A moss provides peat used as a packing material |
| II: | They are early colonizers of land in ecological succession |
| III: | They can decompose rocks |
| IV: | They can prevent soil erosion |
| 1. | Only I, II and III | 2. | Only I, III and IV |
| 3. | Only II, III and IV | 4. | I, II, III and IV |
Subtopic: Bryophytes |
81%
Level 1: 80%+
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Unlike bryophytes and pteridophytes, in gymnosperms:
| 1. | the male and female gametophytes do not have an independent existence |
| 2. | the vascular tissue is poorly developed |
| 3. | the reproduction is dependent on water in most cases |
| 4. | the plants bodies are clearly differentiated into root, stem and leaves |
Subtopic: Gymnosperms |
75%
Level 2: 60%+
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Prothallus is a:
| 1. | Multicellular, free-living, mostly photosynthetic thalloid gametophyte in pteridophytes |
| 2. | Multicellular, free-living, mostly photosynthetic thalloid sporophyte in pteridophytes |
| 3. | Multicellular, free-living, non photosynthetic thalloid gametophyte in pteridophytes |
| 4. | Multicellular, free-living, mostly photosynthetic well differentiated sporophyte in pteridophytes |
Subtopic: Pteridophytes |
81%
Level 1: 80%+
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Consider the following statements regarding green algae:
| I: | Pigments are located in definite plastids |
| II: | Most have pyrenoids in chloroplasts |
| III: | Cell wall has an inner layer of pectose and outer layer of cellulose |
1. Only I and II are correct
2. Only I and III are correct
3. Only II and III are correct
4. I, II and III are correct
Subtopic: Chlorophyceae: Green Algae |
64%
Level 2: 60%+
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Which of the following regarding Cycas is incorrect?
| 1. | Pinnate leaves persist for a few years |
| 2. | Male and female cones are born on different plants |
| 3. | Coralloid roots are in association with cynobacteria |
| 4. | Homosporous gymnosperm |
Subtopic: Gymnosperms |
73%
Level 2: 60%+
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Which of the following does not belong to the class Pteropsida?
| 1. | Dryopteris | 2. | Adiantum |
| 3. | Pteris | 4. | Lycopodium |
Subtopic: Pteridophytes |
82%
Level 1: 80%+
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