- 1(current)
Q. No.
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A prothallus is
| 1. | A structure in pteridophytes formed before the thallus develops |
| 2. | A sporophytic free living structure formed in pteridophytes |
| 3. | A gametophyte free living structure formed in pteridophytes |
| 4. | A primitive structure formed after fertilization in pteriodophytes |
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Evolutionarily, the first terrestrial plants to possess vascular tissues are:
| 1. | Bryophytes | 2. | Pteridophytes |
| 3. | Gnetales | 4. | Cycads |
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Consider the following two statements:
I. The spread of living pteridophytes is restricted to narrow geographical regions
II. They are the first terrestrial plants to possess vascular tissues
1. Both I and II are correct and II explains I
2. Both I and II are correct but II does not explain I
3. I is true but II is false
4. I is false but II is true
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Which of the following does not belong to the class Pteropsida?
| 1. | Dryopteris | 2. | Adiantum |
| 3. | Pteris | 4. | Lycopodium |
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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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Read the following five statements (I - V) and answer as asked next to them.
| I. | In Equisetum the female gametophyte is retained on the parent sporophyte |
| II. | In Ginkgo male gametophyte is not independent |
| III. | The sporophyte in Riccia is more developed than that in Polytrichum |
| IV. | Sexual reproduction in Volvox is isogamous |
| V. | The spores of slime molds lack cell walls |
How many of the above statements are correct?
| 1. Three | 2. Four |
| 3. One | 4. Two |
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Examine the figures A, B, C and D. In which one of the four options all the items, A, B, C and D are correct?
Options :
| A | B | C | D | |
| 1. | Equisetum | Ginkgo | Selaginella | Lycopodium |
| 2. | Selaginella | Equisetum | Salvinia | Ginkgo |
| 3. | Funaria | Adiantum | Salvinia | Riccia |
| 4. | Chara | Marchantia | Fucus | Pinus |
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| 1. | Red algae | 2. | Bryophytes |
| 3. | Pteridophytes | 4. | Gymnosperms |
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1. a homosporous plant with bisexual gametophytes
2. a heterosporous plant with bisexual gametophytes
3. a homosporous plant with unisexual gametophytes
4. a heterosporous plant with unisexual gametophytes
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Q. No.
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