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Q. No.Subtopic: Algae |
98%
Level 1: 80%+
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Subtopic: Algae |
97%
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 |
93%
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 |
90%
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 |
91%
Level 1: 80%+
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Zoospore formed during asexual reproduction in chlorophyceae are
| 1. | Flagellated | 2. | Non-flagellated |
| 3. | Ciliated | 4. | Non ciliated |
Subtopic: Chlorophyceae: Green Algae: I | Chlorophyceae: Green Algae |
88%
Level 1: 80%+
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Sexual reproduction in chlorophyceae is of
| 1. | Isogamous type | 2. | Anisogamous type |
| 3. | Oogamous type | 4. | All of these |
Subtopic: Chlorophyceae: Green Algae: I | Chlorophyceae: Green Algae |
95%
Level 1: 80%+
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In mosses vegetative reproduction takes place by fragmentation & budding in
| 1. | Primary protonema. | 2. | Secondary protonema. |
| 3. | Rhizoids. | 4. | Both 1 and 2. |
Subtopic: Bryophytes |
80%
Level 1: 80%+
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Pinus seed cannot germinate and establish without fungal association. This is because:
| 1. | its seeds contain inhibitors that prevent germination. |
| 2. | its embryo is immature. |
| 3. | it has obligate association with mycorrhizae. |
| 4. | it has very hard seed coat. |
Subtopic: Gymnosperms: I | General Accounts of Gymnosperms: II | Gymnosperms |
91%
Level 1: 80%+
NEET - 2019
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