Match the alga with the type of life cycle and select the correct match from the codes given:
Alga
Type of life cycle
A.
Spirogyra
P.
Haplontic
B.
Fucus
Q.
Diplontic
C.
Polysiphonia
R.
Haplo-diplontic
Codes:
A
B
C
1.
P
Q
R
2.
P
R
Q
3.
Q
P
R
4.
R
Q
P
Subtopic: Â Chlorophyceae: Green Algae |
 78%
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What would be true for both Cycas and Pinus?
| 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 |
Subtopic: Â Gymnosperms |
 89%
From NCERT
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Genera like Selaginella and Salvinia:
1. do not possess vascular tissues
2. have a dominant gametophyte in their life cycle
3. produce two kinds of spores
4. have macrophylls
1. do not possess vascular tissues
2. have a dominant gametophyte in their life cycle
3. produce two kinds of spores
4. have macrophylls
Subtopic: Â Pteridophytes |
 89%
From NCERT
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In which of the following alga you do not expect to see flagellated structures during their entire life cycle?
1. Porphyra
2. Ectocarpus
3. Ulothrix
4. Laminaria
1. Porphyra
2. Ectocarpus
3. Ulothrix
4. Laminaria
Subtopic: Â Pheophyceae: Brown Algae |
 68%
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Identify the correctly matched pair:
| 1. | Isogamy with flagellated gametes | Volvox |
| 2. | Isogamy with non-flagellated gametes | Ulothrix |
| 3. | Anisogamy | Udorina |
| 4. | Oogamy | Spirogyra |
Subtopic: Â Algae |
 75%
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The cell wall of the cells of an alga has cellulose and algin. Another feature expected in this alga would be:
| 1. | Floridean starch as stored food |
| 2. | Phycoerythrin in addition to chlorophyll a, c |
| 3. | 2, unequal, lateral flagellar insertions |
| 4. | Polysulphate esters in cell wall |
Subtopic: Â Pheophyceae: Brown Algae |
 74%
From NCERT
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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%
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