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 |
I: | The members of Chlorophyceae have a rigid cell wall made of an inner layer of cellulose and an outer layer of pectose |
II: | The members of Rhodophyceae do not have a flagellum |
III: | Members of Phaeophyceae store food as floridean starch which is very similar to amylopectin and glycogen in structure |
1. | Only I and III are correct |
2. | Only I and II are correct |
3. | Only II and III are correct |
4. | All I, II and III are correct |
Column I | Column II | ||
A. | Psilopsida | P | Selanginella |
B. | Lycopsida | Q | Adiantum |
C. | Sphenopsida | R | Equisetum |
D. | Pteropsida | S | Psilotum |
A | B | C | D | |
1. | R | Q | S | P |
2. | S | P | R | Q |
3. | P | S | Q | R |
4. | Q | R | P | S |
1. | Red algae | 2. | Bryophytes |
3. | Pteridophytes | 4. | Gymnosperms |
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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 |
Which of the following statement is correct?
1. Ovules are not enclosed by ovary wall in gymnosperms
2. Selaginella is heterosporous, while Salvinia is homosporous
3. Horsetails are gymnosperms
4. Stems are usually unbranched in both Cycas and Cedrus
In bryophytes and pteridophytes, transport of male gametes requires
1. | insects | 2. | birds |
3. | water | 4. | wind |
Mannitol is a sugar alcohol. It is stored as food in
1. | Fucus | 2. | Gracillaria |
3. | Chara | 4. | Porphyra |