Notes from NEET topper

Leaf Age:

In comparison to mature leaves, developing leaves possess a lower concentration of chlorophyll, resulting in a reduced photosynthetic rate during their early growth stages. As leaves progress in maturity, the chlorophyll content within them gradually rises, leading to an increase in photosynthesis. Conversely, aged leaves exhibit a minimal photosynthetic activity due to the degradation of chlorophyll, which subsequently lowers the overall rate of photosynthesis.