MCQ
Which of the following is not the main function of the root system?
- AProvide anchorage to the plant parts
- BSynthesis of $PGRs$
- CAbsorption of water and minerals from soil
- ✓Photosynthesis
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| Column $I$ | Column $II$ |
| ($a$) Pneumotaxic Centre | ($i$) Alveoli |
| ($b$) $O _{2}$ Dissociation curve | ($ii$) Pons region of brain |
| ($c$) Carbonic Anhydrase | ($iii$ Haemoglobin |
| ($d$) Primary site of exchange of gases | ($iv$) $R.B.C.$ |