Assertion(A): | Artificial systems of classification of organisms are simple and acceptable to most scientists. |
Reason (R): | Artificial classification systems take into account the evolutionary relationships between living organisms. |
1. | Both (A) and (R) are True and (R) correctly explains (A). |
2. | Both (A) and (R) are True but (R) does not correctly explain (A). |
3. | (A) is True; (R) is False |
4. | Both (A) and (R) are False |
Statement I: | Red algae do not occur in well-lighted regions close to the surface of water. |
Statement II: | Red algae reproduce by non-motile spores and non-motile gametes. |
1. | Statement I is correct; Statement II is correct |
2. | Statement I is correct; Statement II is incorrect |
3. | Statement I is incorrect; Statement II is correct |
4. | Statement I is incorrect; Statement II is incorrect |
1. | having Chlorophyll a as main photosynthetic pigment |
2. | their capability of sexual reproduction |
3. | not having a well-developed nucleus |
4. | lacking flagellated cells in the life cycle |
1. | Chlorophyll a and Chlorophyll b are dominant photosynthetic pigments |
2. | Pyrenoids seen in chloroplasts in most |
3. | Cellulosic cell wall |
4. | 2 unequal and lateral flagellar insertions |
1. | Chlorophyll a and Chlorophyll c are dominant photosynthetic pigments |
2. | Pyriform gametes |
3. | Floridean starch is the stored food |
4. | 2 unequal and lateral flagellar insertions |
I: | The main plant body is haploid. |
II: | The sex organs are multicellular. |
III: | The sporophyte is not free-living. |
I: | the main plant body is a gametophyte |
II: | body is differentiated into true root, stem and leaves |
III: | organs possess well-differentiated vascular tissues |
Pteridophyte class | Example | |
1. | Psilopsida | Adiantum |
2. | Lycopsida | Lycopodium |
3. | Sphenopsida | Equisetum |
4. | Pteropsida | Dryopteris |
I: | They possess chlorophyll a, c, carotenoids and xanthophylls. |
II: | Food is stored as complex carbohydrates, which may be in the form of laminarin or mannitol. |
1. | Pteridophytes | 2. | Gymnosperms |
3. | Monocots | 4. | Bryophytes |