Q. No.Besides paddy fields, cyanobacteria are also found inside vegetative part of
1.
Pinus
2.
Cycas
3.
Equisetum
4.
Psilotum
Read the following statements (IV) and answer the question which follows them
| I. | In liverworts, mosses and ferns gametophytes are free living. |
| II. | Gymnosperms and some ferns are heterospores. |
| III. | Sexual reproduction in Fucus, Volvox and Albugo is oogamous. |
| IV. | The sporophyte in liverworts is more elaborate than that in mosses. |
How many of the above statements are correct?
1. One
2. Two
3. Three
4. Four
Which one of the following is a correct statement?
| 1. | Pteridophyte gametophyte has a protonemal and leafy stage |
| 2. | In gymnosperms female gametophyte is free-living |
| 3. | Antheridiophores and archegoniophores are present in pteridophytes |
| 4. | Origin of seed habit can be traced in pteridophytes |
The gametophyte is not an independent, free living generation in
| 1. | Adiantum | 2. | Marchantia |
| 3. | Pinus | 4. | Polytrichum |
A prokaryotic autotrophic nitrogen fixing symbiont is found in
| 1. | Cycas | 2. | Cicer |
| 3. | Pisum | 4. | Alnus |
Male and female gametophytes are independent and free-living in
1. mustard
2. castor
3. Pinus
4. Sphagnum
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 |
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 |
Which one of the following is heterosporous?
1. Dryopteris
2. Salvinia
3. Adiantum
4. Equisetum
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