- 1(current)
Q. No.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: Algae |
77%
Level 2: 60%+
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Subtopic: Algae |
83%
Level 1: 80%+
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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: Algae |
86%
Level 1: 80%+
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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: Algae |
81%
Level 1: 80%+
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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: Algae |
77%
Level 2: 60%+
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Gracilaria and Gelidium, that are source of Agar, belong to:
| 1. | Chlorophyceae | 2. | Rhodophyceae |
| 3. | Phaeophyceae | 4. | Fungi |
Subtopic: Algae |
88%
Level 1: 80%+
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Which one of the following statements is wrong?
| 1. | Laminaria and Sargassum are used as food. |
| 2. | Algae increase the level of dissolved oxygen in the immediate environment. |
| 3. | Algin is obtained from red algae, and carrageenan from brown algae. |
| 4. | Agar-agar is obtained from Gelidium and Gracilaria. |
Subtopic: Algae |
81%
Level 1: 80%+
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Which of the following pairs is of unicellular algae?
| 1. | Gelidium and Gracilaria |
| 2. | Anabaena and Volvox |
| 3. | Chlorella and Spirulina |
| 4. | Laminaria and Sargassum |
Subtopic: Algae |
67%
Level 2: 60%+
NEET - 2020
Please attempt this question first.
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Subtopic: Algae |
59%
Level 3: 35%-60%
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Porphyra, Sargassum and Laminaria are all:
| I: | brown algae |
| II: | marine edible algae |
1. Only I is correct
2. Only II is correct
3. Both I and II are correct
4. Both I and II are incorrect
Subtopic: Algae |
62%
Level 2: 60%+
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- 1(current)
Q. No.
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