MCQ
What is hydroponics?
- ATechnique of growing plants in an artificial environment.
- ✓Technique of growing plants in the absence of soil.
- CAeration of nutrient solution.
- DBoth $(b)$ and $(c)$
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| List$- I$ | List $- II$ |
| $a$ Chlamydomonas | $i$ Moss |
| $b$ Cycas | $ii$ Pteridophyte |
| $c$ Selaginella | $iii$ Alga |
| $d$ Sphagnum | $iv$ Gymnosperm |
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