An alga lacks flagellar insertions in its life cycle and stores food as floridean starch. This alga can be:
1.
Chara
2.
Fucus
3.
Porphyra
4.
Ectocarpus
Subtopic: Â Rhodophyceae: Red Algae and Importance of Algae |
 86%
From NCERT
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Marchantia and Funaria are similar in:
1. having multicellular branched rhizoids
2. dorsoventrally flattened plant body
3. asexual reproduction by gemmae
4. dominant gametophyte in the life cycle
1. having multicellular branched rhizoids
2. dorsoventrally flattened plant body
3. asexual reproduction by gemmae
4. dominant gametophyte in the life cycle
Subtopic: Â Bryophytes |
 72%
From NCERT
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In pteridophytes, Selaginella:
1. has macrophylls
2. stobili or cones are not seen
3. is hetrosporous
4. lacks vascular tissue
1. has macrophylls
2. stobili or cones are not seen
3. is hetrosporous
4. lacks vascular tissue
Subtopic: Â Pteridophytes |
 91%
From NCERT
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In algae with haplontic life cycle:
| I: | there are no free-living sporophytes |
| II: | mitosis in zygote results in diploid spores |
| III: | gametophyte is the dominant photosynthetic phase |
| 1. | Only I and II are correct |
| 2. | Only I and III are correct |
| 3. | Only II and III are correct |
| 4. | Only II and III are correct |
 73%
From NCERT
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Sphagnum is a bryophyte, commonly called as bog moss or peat moss, that is used as packing material for trans-shipment of living materials because:
1. It is easily available
2. It is hygroscopic
3. It is hydrophobic
4. It prevents soil erosion
1. It is easily available
2. It is hygroscopic
3. It is hydrophobic
4. It prevents soil erosion
Subtopic: Â Bryophytes |
 79%
From NCERT
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Which of the following is true regarding the classes of Bryophytes?
| 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 |
Subtopic: Â Bryophytes (Liverworts) |
 64%
From NCERT
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The algae shown in the diagram below belongs to the class which has:
1. 2-8 equal and apical flagella
2. 2 unequal and lateral flagella
3. 2 unequal and apical flagella
4. 2-8 equal and lateral flagella
1. 2-8 equal and apical flagella
2. 2 unequal and lateral flagella
3. 2 unequal and apical flagella
4. 2-8 equal and lateral flagella
Subtopic: Â Algae |
 81%
From NCERT
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Given below are two statements:
| 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 |
Subtopic: Â Algae |
 77%
From NCERT
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Selaginella, a pteridophyte which belongs to the class Lycopsida, is:
1. heterosporous and has microphylls
2. homosporous and has macrophylls
3. homosporous and has microphylls
4. heterosporous and has macrophylls
1. heterosporous and has microphylls
2. homosporous and has macrophylls
3. homosporous and has microphylls
4. heterosporous and has macrophylls
Subtopic: Â Pteridophytes |
 77%
From NCERT
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Which of the following statement is true about the difference between Cycas and Pinus?
| 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 |
Subtopic: Â Gymnosperms |
 64%
From NCERT
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