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Q. No.A prokaryotic autotrophic nitrogen-fixing symbiont is found in:
1. Cycas
2. Cicer
3. Pisum
4. Alnus
1. Cycas
2. Cicer
3. Pisum
4. Alnus
Subtopic: Gymnosperms: I | Gymnosperms |
85%
From NCERT
AIPMT - 2011
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Subtopic: Pheophyceae: Brown Algae |
88%
From NCERT
AIPMT - 2009
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Phylogenetic system of classification is based on:
1. evolutionary relationships
2. morphological features
3. chemical constituents
4. floral characters
Subtopic: Classification System: I | Classification System: II | Classification System |
94%
From NCERT
AIPMT - 2009
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Which one of the following is a vascular cryptogam?
| 1. | Equisetum | 2. | Ginkgo |
| 3. | Marchantia | 4. | Cedrus |
Subtopic: Classification of Pteridophytes: I | Classification of Pteridophytes: II | Pteridophytes | Classification of Pteridophytes |
63%
AIPMT - 2009
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Which one of the following is considered important in the development of seed habit?
| 1. | Dependent sporophyte | 2. | Heterospory |
| 3. | Halplontic life cycle | 4. | Free-living gametophyte |
Subtopic: Pteridophytes: Heterospory |
71%
From NCERT
AIPMT - 2009
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Reduction in vascular tissue, mechanical tissue and cuticle is characteristic of:
1. xerophytes
2. mesophytes
3. epiphytes
4. hydrophyte
Subtopic: Classification System: I | Classification System: II | Classification System |
AIPMT - 2009
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In which one of the following, the male and female gametophytes don't have free-living independent existence?
| 1. | Pteris | 2. | Funaria |
| 3. | Polytrichum | 4. | Cedrus |
Subtopic: Pteridophytes |
64%
AIPMT - 2008
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Which one of the following is heterosporous?
1. Dryopteris
2. Salvinia
3. Adiantum
4. Equisetum
Subtopic: Pteridophytes: Heterospory | Pteridophytes |
92%
From NCERT
AIPMT - 2008
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Select one of the following pairs of important features distinguishing Gnetum from Cycas and Pinus and showing affinities with angiosperms.
| 1. | absence of resin duct and leaf venation |
| 2. | presence of vessel elements and absence of archegonia |
| 3. | periandl and two integuments |
| 4. | embryo development and apical meristem |
Subtopic: Examples of Gymnosperms |
67%
AIPMT - 2008
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Flagellated male gametes are present in all three of which one of the following sets?
1. Anthoceros, Funaria, and Spirogyra
2. Zygnema, Saprolegnia, and Hydrilla
3. Fucus, Marsilea, and Calotropis
4. Riccia, Dryopteris, and Cycas
Subtopic: Bryophytes | Pteridophytes: Heterospory | Gymnosperms: I | Gymnosperms |
AIPMT - 2007
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