- 1(current)
Q. No.Read the following five statements (I to V) and select the option with all correct statements.
| I: | Mosses and lichens are the first organisms to colonise bare rock. |
| II: | Selaginella is a homosporous pteridophyte. |
| III: | Coralloid roots in Cycas have VAM. |
| IV: | Main plant body in bryophytes is gametophytic, whereas in pteridophytes it is sporophytic. |
| V: | In gymnosperms, male and female gametophytes are present within sporangia located on sporophytes. |
| 1. | I, III and IV | 2. | II, III and IV |
| 3. | I, IV and V | 4. | II, III and V |
Read the following statements (A-E) and answer the question which follows them.
| A: | In liverworts, mosses, and ferns gametophytes are free-living |
| B: | Gymnosperms and some ferns are hetero-sperms |
| C: | Sexual reproduction in Fucus, Volvox and Albugo is oogamous |
| D: | The sporophyte in liverworts is more elaborate than that in mosses |
| E: | Both, Pinus and Marchantia are dioecious |
How many of the above statements are correct?
1. Two
2. Three
3. Four
4. One
1. Presence of archegonia
2. Well-developed vascular tissues
3. Independent gametophyte
4. Independent sporophyte
Examine the figure given below and select the right option giving all the four parts (A, B, C and D) correctly identified:
| A | B | C | D | |
| 1. | Antheridiophore | Male thallus | Globule | Roots |
| 2. | Archegoniophore | Female thallus | Gemma cup | Rhizoids |
| 3. | Archegoniophore | Female thallus | Bud | Foot |
| 4. | Seta | Sporophyte | Protonema | Rhizoids |
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
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
In a moss the sporophyte:
| 1. | is partially parasitic on the gametophyte |
| 2. | produces gametes that give rise to the gametophyte |
| 3. | arises from a spore produced from the gametophyte |
| 4. | manufactures food for itself, as well as for the gametophyte |
- 1(current)
Q. No.
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