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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