Q. No.Which of the following does not belong to the class Pteropsida?
1.
Dryopteris
2.
Adiantum
3.
Pteris
4.
Lycopodium
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In gymnosperms, the ovules are:
| 1. | not enclosed by any ovary wall before and after fertilization |
| 2. | not enclosed by any ovary wall only before fertilization |
| 3. | not enclosed by any ovary wall only after fertilization |
| 4. | enclosed by an ovary wall before and after fertilization |
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The giant redwood tree, Sequoia, belongs to:
| 1. | Bryophyta | 2. | Pteridophyta |
| 3. | Gymnospermae | 4. | Angiospermae |
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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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Identify the incorrect statement regarding gymnosperms in general:
1. They are heterosporous
2. Megaspore mother cell is differentiated from a cell in the nucellus
3. Multicellular female gametophyte is retained on the megasporangium
4. The male gametophyte has a large number of cells
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Identify the incorrect statement:
| 1. | As compared to the bryophytes, pteridophytes have sporophyte as the main plant body |
| 2. | Pteridophyte sporophyte has well differentiated true roots, stem and leaves |
| 3. | Selaginella has macrophylls like ferns |
| 4. | In sporophyte of ferns, leaf-like appendages called sporophylls subtend sporangia |
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