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Q. No.The leaf-like photosynthetic organ in brown algae is called as:
1. Holdfast
2. Stipe
3. Frond
4. Rhizoid
Subtopic: Â Pheophyceae: Brown Algae |
 87%
From NCERT
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Which of the following classes of algae store food that is chemically very similar to amylopectin and glycogen?
| 1. | Chlorophyceae | 2. | Phaeophyceae |
| 3. | Rhodophyceae | 4. | All algae |
Subtopic: Â Rhodophyceae: Red Algae and Importance of Algae |
 78%
From NCERT
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The cell wall polysaccharides of some red algae are the source of:
| 1. | a sugar substitute |
| 2. | a source of salt |
| 3. | glucose for the study of photosynthesis |
| 4. | agar for growing bacteria and other organisms |
Subtopic: Â Algae |
 77%
From NCERT
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Subtopic: Â Algae |
 82%
From NCERT
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Which of the following is not true regarding algae?
| 1. | Thallophytes that contain chlorophyll |
| 2. | Autotrophic |
| 3. | Body made of pseudo-parenchyma |
| 4. | Cellulosic cell wall |
Subtopic: Â Algae |
 86%
From NCERT
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The gametes are pyriform and bear two laterally attached flagella in:
| 1. | Chlorophyceae | 2. | Phaeophyceae |
| 3. | Rhodophyceae | 4. | All algae |
Subtopic: Â Pheophyceae: Brown Algae |
 83%
From NCERT
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Sexual reproduction takes place through non flagellated gametes that are similar in size in:
| 1. | Ulothrix | 2. | Spirogyra |
| 3. | Volvox | 4. | Fucus |
Subtopic: Â Algae |
 81%
From NCERT
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Which of the following is not seen in red algae?
| 1. | 2 unequal flagella | 2. | Cellulose cell wall |
| 3. | Phycoerythrin | 4. | Floridean starch |
Subtopic: Â Pheophyceae: Brown Algae |
 84%
From NCERT
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Which of the following would not be true regarding importance of algae?
| 1. | They increase level of dissolved oxygen in water |
| 2. | Many can be used as food source |
| 3. | They are the source of most antibiotics known to man |
| 4. | Products like hydrocolloids [algin] and agar are useful to man |
Subtopic: Â Algae |
 76%
From NCERT
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Identify the incorrect statement regarding red algae:
| 1. | Major pigments are chlorophyll a, c and phycocyanin |
| 2. | Stored food is floridean starch |
| 3. | Cellulosic cell wall with pectin and polysulfate esters |
| 4. | Absent flagellar insertions |
Subtopic: Â Rhodophyceae: Red Algae and Importance of Algae |
 83%
From NCERT
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