Q. No.Which of the following is an example of anisogamous reproduction in Algae?
1. Udorina
2. Volvox
3. Fucus
4. Spirogyra
1. Udorina
2. Volvox
3. Fucus
4. Spirogyra
Subtopic: Algae |
82%
Level 1: 80%+
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Which of the following is an example of oogamous reproduction?
1. Ulothrix
2. Udorina
3. Spirogyra
4. Fucus
Subtopic: Algae |
90%
Level 1: 80%+
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Algae are useful
| 1. | Because at least half of the total carbon dioxide fixation on Earth is carried out by algae through photosynthesis. |
| 2. | Algae being photosynthetic can increase the level of dissolved oxygen in their immediate environment |
| 3. | They are primary producers of energy rich compounds and form the basis of the food cycles of all aquatic animals |
| 4. | All of the above |
Subtopic: Algae |
97%
Level 1: 80%+
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Hydrocolloid is
| 1. | Water soluble substance |
| 2. | Water holding substance |
| 3. | Hydrogen gas containing substance |
| 4. | Oxygen gas containing substance |
Subtopic: Algae |
96%
Level 1: 80%+
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Algin
| 1. | Water holding substance |
| 2. | Obtained from brown algae |
| 3. | Non sulfated water holding substance |
| 4. | All of these |
Subtopic: Algae |
89%
Level 1: 80%+
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Carrageen
| 1. | Water holding substance |
| 2. | Obtained from red algae |
| 3. | Sulfated water holding substance |
| 4. | All of these |
Subtopic: Algae |
94%
Level 1: 80%+
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Subtopic: Algae |
90%
Level 1: 80%+
Hints
Subtopic: Algae |
94%
Level 1: 80%+
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Pyrenoid is
| 1. | Storage bodies located in cytoplasm of chloropbyceae |
| 2. | Storage bodies located in cytoplasm of Phaeophyceae |
| 3. | Storage bodies located in chloroplast of chlorophyceae |
| 4. | Storage bodies located in chloroplast of Phaeophyceae |
Subtopic: Chlorophyceae: Green Algae: I | Chlorophyceae: Green Algae |
85%
Level 1: 80%+
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Subtopic: Chlorophyceae: Green Algae: I | Chlorophyceae: Green Algae |
93%
Level 1: 80%+
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