MCQ
In the plant 'ash', this is not present.
- APhosphate
- BSulphate
- ✓Cellulose
- DAll are present
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$I$. Species diversity provides stability to the ecosystem
$II$. Communities with more species tends to be more stable than those with less species
$III$. Ecosystem with higher biodiversity are more productive than the ecosystem with lower biodiversity
$IV$. Biodiversity is not essential for the maintenance and health of ecosystem
Choose the correct option
| Column $- I$ | Column $- II$ |
| (a) Saprophyte | (i) Symbiotic association of fungi with plant roots |
| (b) Parasite | (ii) Decomposition of dead organic materials |
| (c) Lichens | (iii) Living on living plants or animals |
| (d) Mycorrhiza | (iv) Symbiotic association of algae and fungi |
Choose the correct answer from the options given below
$(a)\quad (b)\quad (c)\quad (d)$