STD 11 - 5. Morphology flowering plants — BIOLOGY STD 11 Science — Question

1. Inspiratory capacity $\text{(IC)} =$ Tidal Volume $+$ Residual Volume.
2. Vital Capacity $\text{(VC)} =$ Tidal Volume $\text{(TV)} +$ Inspiratory Reserve Volume $\text{(IRV) +}$ Expiratory Reserve Volume $\text{(ERV).}$
3. Residual Volume $\text{(RV)} =$ Vital Capacity $\text{(VC)} –$ Inspiratory Reserve Volume $\text{(IRV).}$
4. Tidal Volume $\text{(TV)} =$ Inspiratory Capacity $\text{(IC)} –$ Inspiratory Reserve Volume $\text{(IRV).}$

$R -$ The concentration of $CO_2$ is between $0.03$ and $0.04$ percent. Increase in concentration upto $0.005$ percent can cause an increase in $CO_2$ fixation rates.