Question
$CO_2$ enters the leaf through ______.
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| Gland | Hormone Secreted | Effect on Body |
| (i) | (ii) | Regulates basal metabolism |
| Pancreas ( beta-cells) | (iii) | (iv) |
| (v) | (vi) | Increases heart beat |
| (vii) | Thyroid stimulating hormone | (viii) |