- 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 |
Subtopic: Gymnosperms |
73%
Level 2: 60%+
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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 |
Subtopic: Gymnosperms |
92%
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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Female sex organs of gymnosperms are called:
| 1. | Archegonia | 2. | Female strobili |
| 3. | Megasporangium | 4. | Megasporophyll |
Subtopic: Gymnosperms |
Level 3: 35%-60%
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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 |
78%
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 |
77%
Level 2: 60%+
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Coralloid roots in Cycas are associated with nitrogen fixing:
| 1. | Rhizobium | 2. | Frankia |
| 3. | Azospirillum | 4. | Cyanobacteria |
Subtopic: Gymnosperms |
83%
Level 1: 80%+
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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 |
Subtopic: Gymnosperms |
73%
Level 2: 60%+
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Which of the following is not true regarding comparison between the gymnosperms Pinus and Cycas?
| 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 |
Subtopic: Gymnosperms |
75%
Level 2: 60%+
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- 1(current)
Q. No.
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