MCQ
The typical floral formula of Papilionaceae is
- A

- B

- ✓

- D






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From this equation, $\mathrm{K}$ indicates:
$R -$ 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.