Isogamous condition with non-flagellated gametes is found in
1. Chlamydomonas
2. Spirogyra
3. Volvox
4. Fucus
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
Cycas and Adiantum resemble each other in having
| 1. | seeds | 2. | motile sperms |
| 3. | cambium | 4. | vessels |
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 |
Gymnosperms are also called soft wood spermatophytes because they lack
| 1. | cambium |
| 2. | phloem fibres |
| 3. | thick-walled tracheids |
| 4. | xylem fibres |
Compared with the gametophytes of the bryophytes, the gametophytes of vascular plants tends to be
| 1. | larger but to have smaller sex organs |
| 2. | larger and to have large sex organs |
| 3. | smaller and to have smaller sex organs |
| 4. | smaller but to have larger sex organs |
The gametophyte is not an independent, free living generation in
| 1. | Adiantum | 2. | Marchantia |
| 3. | Pinus | 4. | Polytrichum |
Archegoniophore is present in
(1) Chara
(2) Adiantum
(3) Funaria
(4) Marchantia