- 1(current)
Q. No.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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Which of the following Greek root word means "naked" and hence gives name to plants like cycas and pines?
| 1. | angeion | 2. | sperm |
| 3. | gymnos | 4. | gynos |
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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
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Female sex organs of gymnosperms are called:
| 1. | Archegonia | 2. | Female strobili |
| 3. | Megasporangium | 4. | Megasporophyll |
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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
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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
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Coralloid roots in Cycas are associated with nitrogen fixing:
| 1. | Rhizobium | 2. | Frankia |
| 3. | Azospirillum | 4. | Cyanobacteria |
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All the following regarding Pinus are correct except:
1. Obligate association with mycorrhiza
2. Unbranched stems
3. Male and female strobili on the same plant
4. Leaves in fascicles
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| Character | Pinus | Cycas | |
| 1. | Root symbiotic association | Mycorrhiza | Cynobacteria |
| 2. | Stem | Branched | Unbranched |
| 3. | Reproductive parts | Dioecious | Monoecious |
| 4. | Scale leaves | Fall off as branches mature | Persistent, protective |
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- 1(current)
Q. No.
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