Q. No.Consider the following statements regarding green algae:
I. Pigments are located in definite plastids
II. Most have pyrenoids in chloroplasts
III. Cell wall has an inner layer of pectose and outer layer of cellulose
1. Only I and II are correct
2. Only I and III are correct
3. Only II and III are correct
4. I, II and III are correct
II. Most have pyrenoids in chloroplasts
III. Cell wall has an inner layer of pectose and outer layer of cellulose
2. Only I and III are correct
3. Only II and III are correct
4. I, II and III are correct
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Consider the following two statements:
I. The spread of living pteridophytes is restricted to narrow geographical regions
II. They are the first terrestrial plants to possess vascular tissues
1. Both I and II are correct and II explains I
2. Both I and II are correct but II does not explain I
3. I is true but II is false
4. I is false but II is true
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Which of the following regarding Cycas is incorrect?
1. Pinnate leaves persist for a few years
2. Male and female cones are born on different plants
3. Coralloid roots are in association with cynobacteria
4. Homosporous gymnosperm
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Which of the following does not belong to the class Pteropsida?
| 1. | Dryopteris | 2. | Adiantum |
| 3. | Pteris | 4. | Lycopodium |
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In gymnosperms, the ovules are:
1. not enclosed by any ovary wall before and after fertilization
2. not enclosed by any ovary wall only before fertilization
3. not enclosed by any ovary wall only after fertilization
4. enclosed by an ovary wall before and after fertilization
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Coralloid roots in Cycas are associated with nitrogen fixing:
| 1. | Rhizobium | 2. | Frankia |
| 3. | Azospirillum | 4. | Cyanobacteria |
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All the following regarding Pinus are correct except:
1. Obligate association with mycorrhiza
2. Unbranched stems
3. Male and female strobili on the same plant
4. Leaves in fascicles
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Identify the incorrect statement:
| 1. | As compared to the bryophytes, pteridophytes have sporophyte as the main plant body |
| 2. | Pteridophyte sporophyte has well differentiated true roots, stem and leaves |
| 3. | Selaginella has macrophylls like ferns |
| 4. | In sporophyte of ferns, leaf-like appendages called sporophylls subtend sporangia |
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What is not correct regarding resemblances between gymnosperms and angiosperms?
1. Well developed vascular system with xylem and phloem
2. Development of flowers for the purpose of reproduction
3. Microspores develop into a pollen tube
4. Post fertilization development of endosperm for nourishment of embryo
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