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Q. No.A location with luxuriant growth of lichens on the trees indicates that the:
| 1. | Trees are very healthy | 2. | Trees are heavily infested |
| 3. | Location is highly polluted | 4. | Location is not polluted |
Subtopic: Lichens |
86%
From NCERT
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There exists a close association between the alga and the fungus within a lichen. The fungus:
| 1. | Provides food for the alga |
| 2. | Provides protection, anchorage and absorption for the alga |
| 3. | Fixes the atmospheric nitrogen for the alga |
| 4. | Releases oxygen for the alga |
Subtopic: Lichens |
82%
From NCERT
AIPMT - 2005
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In lichens, fungus has
1. Symbiotic relationship with alga
2. Epiphytic relationship with alga
3. Saprophytic relationship with alga
4. Parasitic relationship with alga
Subtopic: Lichens |
90%
From NCERT
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