MCQ
Choose the correct function of magnesium.
- AIt is a constituent of several coenzyme.
- ✓It activates the enzymes of respiration and photosynthesis.
- CIt activates enzyme catalase.
- DIt helps in maintaining anion$-$cation balance.
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| column $-I$ | column $-II$ |
| $(A)$ Flame Cells | $(p)$ sponges |
| $(B)$ Collar Cells | $(q)$ Hydra |
| $(C)$ stinging cell | $(r)$ Planaria |
| $(s)$ Ascaris |