Column I | Column II | ||
A. | Pigment | P. | Fucoxanthin |
B. | Stored food | Q. | Phycoerythrin |
C. | Cell wall | R. | Floridean starch |
D. | Flagella | S. | Laminarin |
T. | Polysulfate esters | ||
U. | Algin | ||
V. | 2-8. equal, apical | ||
W. | Absent |
A | B | C | D | |
1. | Q | R | T | W |
2. | P | S | U | V |
3. | Q | R | U | W |
4. | P | S | T | V |
Assertion (A): | The spread of living pteridophytes is limited and restricted to narrow geographical regions. |
Reason (R): | Evolutionarily, pteridophytes are the first terrestrial plants to possess vascular tissues – xylem and phloem. |
1. | Both (A) and (R) are True and (R) is the correct explanation of (A). |
2. | Both (A) and (R) are True but (R) is not the correct explanation of (A). |
3. | (A) is True but (R) is False. |
4. | Both (A) and (R) are False. |
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 |
1. | Isogamy with flagellated gametes | Volvox |
2. | Isogamy with non-flagellated gametes | Ulothrix |
3. | Anisogamy | Udorina |
4. | Oogamy | Spirogyra |
Major pigments | Stored food | Cell wall | Flagella | |
1. | Chlorophyll a, d; phycoerythrin | Mannitol. Laminarin | Cellulose, pectin, polysulphate esters | 2-8, equal, apical |
2. | Chlorophyll a, d; phycoerythrin | Floridean starch | Cellulose, pectin, polysulphate esters | Absent |
3. | Chlorophyll a, c; Fucoxanthin | Mannitol. Laminarin | Cellulose and algin | 2, unequal, lateral |
4. | Chlorophyll a, b; | Starch | Cellulose | 2-8, equal, apical |
I: | They are the first terrestrial plants to possess true vascular tissue |
II: | Main plant is sporophyte |
III: | Water is required for transfer of antherozoids |
1. | The thallus of mosses is dorsiventral and closely appressed to the surface |
2. | In the life cycle of liverworts, the predominant gametophytic stage is divided into two stages - the protonema and the leafy stage |
3. | The sporophyte in liverworts is more elaborate than in mosses |
4. | Asexual reproduction in liverworts takes place by fragmentation of thalli, or by the formation of specialised structures called gemmae |
Statement I: | Chlorella is used as food supplement by space travellers |
Statement II: | Chlorella is a unicellular algae |
1. | Both I and II are true and II correctly explains I |
2. | I is true and II is false |
3. | Both I and II are true but II does not explain I |
4. | Both I and II are false |
1. | Pinus has coralloid roots associated with N2-fixing cyanobacteria, whereas Cycas has roots with fungal association in the form of mycorrhiza |
2. | Cycas is heterosporous, whereas Pinus is homosporous |
3. | Male cones and female megasporophylls are borne on different trees in Cycas, whereas they are borne on the same tree in Pinus |
4. | Stems of Cycas are branched, whereas Pinus has unbranched stems |