In all members of algae inner cell wall is cellulosic however outer cell wall can be of different types. In green algae outer cell wall is made up of
(1) Pectin
(2) Algin
(3) Agar
(4) Funor
Subtopic: Algae |
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Green algae can store food in all of the following forms, except
1. Protein
2. Starch
3. Oil droplets
4. Mannitol
Subtopic: Algae |
84%
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The main photosynthetic pigments of green algae are
(1) Chl a & b
(2) Chl a & c
(3) Chl a & d
(4) Chl c only
Subtopic: Algae |
96%
From NCERT
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Match the alga with the type of life cycle and select the correct match from the codes given:
Codes:
| Alga | Type of life cycle | ||
| A. | Spirogyra | P. | Haplontic |
| B. | Fucus | Q. | Diplontic |
| C. | Polysiphonia | R. | Haplo-diplontic |
| A | B | C | |
| 1. | P | Q | R |
| 2. | P | R | Q |
| 3. | Q | P | R |
| 4. | R | Q | P |
Subtopic: 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: Gymnosperms |
89%
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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: Pteridophytes |
89%
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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: 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: 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: Pheophyceae: Brown Algae |
74%
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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: Rhodophyceae: Red Algae and Importance of Algae |
86%
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