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Q. No.Examine the figures A, B, C, and D and identify the one in which all labelings are correct?
| A. |  |
B. |  |
| C. |  |
D. |  |
| A | B | C | D | |
| 1. | Laminaria | Salvinta | Male thallus of Marchantia | Cayas |
| 2. | Polysiphonia | Equisetum | Female thallus of Marchantia | Ginkgo |
| 3. | Chara | Selaginella | Sphagnum | Ginkgo |
| 4. | Fucus | Fern | Funaria | Pinus |
Subtopic: Â Rhodophyceae: Red Algae and Importance of Algae |Â Bryophytes |Â Bryophytes (Liverworts) |Â Pteridophytes: Heterospory |Â Gymnosperms |
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Subtopic: Â Pteridophytes: Heterospory |
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Pteridophytes:
| 1. | Include horsetails and ferns |
| 2. | Are used for medicinal purposes and soil binders |
| 3. | Are also frequently grown as ornaments |
| 4. | All are correct |
Subtopic: Â Pteridophytes: Heterospory |
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The spreading of living pteridophyte is limited and is restricted to narrow geographical region because of
| 1. | Growth requirements of gametophyte (cool, damp and shady places). |
| 2. | Requirement of water for fertilisation. |
| 3. | Absence of stomata in leaf and absence of vascular tissue. |
| 4. | Both (a) and (b). |
Subtopic: Â Pteridophytes: Heterospory |Â Pteridophytes |
 96%
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Identify the pteridophyte and the structure marked as X:
1. Equisetum, X = Strobilus/cone
2. Equisetum, X = Antheridia
3. Equisetum, X = Archegonia
4. Equisetum, X = Microsporangium
1. Equisetum, X = Strobilus/cone
2. Equisetum, X = Antheridia
3. Equisetum, X = Archegonia
4. Equisetum, X = Microsporangium
Subtopic: Â Pteridophytes: Heterospory |
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Heterospory is found in:
| 1. | All pteridophytes |
| 2. | Only angiosperms |
| 3. | Only gymnosperms |
| 4. | Some pteridophytes and all seed plants |
Subtopic: Â Pteridophytes: Heterospory |
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Which one is correct about heterosporous pteridophytes?
| 1. | Microspore and megaspores develop into the male and the female gametophytes respectively. |
| 2. | The female gametophyte are retained on the parent sporophyte for a variable period. |
| 3. | The development of the zygote into the embryo takes place within the female gametophyte. |
| 4. | All |
Subtopic: Â Pteridophytes: Heterospory |
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