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Phylogenetic system of classification is based on
1.
evolutionary relationships
2.
morphological features
3.
chemical constituents
4.
floral characters
Subtopic: Â Classification System: I |Â Classification System |
 93%
Level 1: 80%+
NEET - 2009
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Which one of the following is a vascular cryptogam?
1. Equisetum
2. Ginkgo
3. Marchantia
4. Cedrus
Subtopic: Â Classification of Pteridophytes: I |Â Classification of Pteridophytes |
 60%
Level 2: 60%+
NEET - 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. | Haplontic life cycle |
| 4. | Free-living gametophyte |
Subtopic: Â Pteridophytes: Heterospory |
 70%
Level 2: 60%+
NEET - 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: Â General Accounts of Gymnosperms: II |Â Gymnosperms |
 77%
Level 2: 60%+
NEET - 2008
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Subtopic: Â Pteridophytes: Heterospory |
 89%
Level 1: 80%+
NEET - 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. | perianth and two integuments |
| 4. | embryo development and apical meristem |
Subtopic: Â General Accounts of Gymnosperms: II |Â Gymnosperms |
 67%
Level 2: 60%+
NEET - 2008
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Flagellated male gametes are present in all the 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: Â Algae |
Level 3: 35%-60%
NEET - 2007
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In gymnosperms, the pollen chamber represents:
| 1. | a cell in the pollen grain in which the sperms are formed |
| 2. | a cavity in the ovule in which pollen grains are stored after pollination |
| 3. | an opening in the megagametophyte through which the pollen tube approaches the egg |
| 4. | the microsporangium in which pollen grains develop |
Subtopic: Â General Accounts of Gymnosperms: II |Â Gymnosperms |
Level 3: 35%-60%
NEET - 2007
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Moss peat is used as a packing material for sending flowers and live plants to distant places because:
(1) it is easily available
(2) it is hygroscopic
(3) it reduces transpiration
(4) it serves as a disinfectant
Subtopic: Â Bryophytes |
 78%
Level 2: 60%+
NEET - 2006
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Conifers differ from grasses in the :
| 1. | production of seeds from ovules |
| 2. | lack of xylem tracheids |
| 3. | absence of pollen tubes |
| 4. | formation of endosperm before fertilization |
Subtopic: Â Gymnosperms: I |Â Gymnosperms |
 56%
Level 3: 35%-60%
NEET - 2006
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