Скачать с ютуб Evolution of leaf | Microphyllous and megaphyllous leaves in pashto | first year biology | sabar kha в хорошем качестве

Evolution of leaf | Microphyllous and megaphyllous leaves in pashto | first year biology | sabar kha

Primary function of leaf is photosynthesis. It also helps in transpiration. Another activity is transpiration in which oxygen is absorbed and carbon dioxide is released. The primitive vascular plants lacked leaves. So it means that the evolution of leaf has taken place. There are two types of leaves. Microphyllous leaf with single vein and megaphyllous leaf with many veins. Evolution of microphyllous leaf has two possibilities. 1) Outgrowth 2) Reduction The evolution of megaphyllous leaf is supported by forked branching reduction hypothesis. #EvolutionOfLeafInPashto #MicrophyllousAndMegaphyllousLeaf