Q. No.In which one of the following, male and female gametophytes do not have free living independent existence
| 1. | Polytrichum | 2. | Cedrus |
| 3. | Pteris | 4. | Funaria |
Which of the following is not seen in red algae?
| 1. | 2 unequal flagella | 2. | Cellulose cell wall |
| 3. | Phycoerythrin | 4. | Floridean starch |
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Chl a, Chl d and phycoerythrin occur in
| 1. | Chlorophyceae | 2. | Bacillariophyceae |
| 3. | Cyanophyceae | 4. | Rhodophyceae |
What would be true regarding reproduction by ‘zoospores’ in algae and fungi?
| 1. | While they are produced in sexual reproduction in algae, in fungi they are produced in asexual reproduction. |
| 2. | While they are produced in sexual reproduction in fungi, in algae they are produced in asexual reproduction. |
| 3. | They are flagellated and motile in algae and non-motile in fungi. |
| 4. | They are motile and produced in asexual reproduction in both algae and fungi. |
The gymnosperms, Pines, are unique because they produce:
| 1. | leaves in fascicles | 2. | true leaves |
| 3. | cones | 4. | archegonia |
The microstrobilus in gymnosperms represents the:
| 1. | "female" cone | 2. | megasporangium-bearing cone |
| 3. | pollen-bearing cone | 4. | none of these |
Conifers are adapted to tolerate extreme environmental conditions because of
| 1. | presence of vessels | 2. | broad hardy leaves |
| 3. | superficial stomata | 4. | thick cuticle |
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| 1. | Cycas is a gymnosperm and Pinus is a pteridophyte |
| 2. | The gametophyte is dominant in the life cycle of Cycas and the sporophytes is dominant in the life cycle of Pinus |
| 3. | Roots of Pinus have mycorrhiza association and coralloid roots of Cycas are associated with nitrogen-fixing cyanobacteria |
| 4. | In Pinus, the male and female cones are borne on different trees and in Cycas on the same tree |
Which of the following is not true for the green alga Spirogyra?
1. Unbranched, filamentous and commonly found in stagnant fresh water bodies.
2. The filament is composed of large number of long, cylindrical cells placed one above the other in a single row.
3. The cells are characterised by long spiral ribbon-shaped chloroplasts with several pyrenoids.
4. There are multiple small vacuoles in each cell.
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