BIO205H5 Lecture : Lecture #3 Notes
Document Summary
If there is a bit of wind, the heat , moisture and co2 is given of in the atmosphere. because there is a break in the leaf, the lobed leaf will dissipate more heat into the atmosphere the more lobed and compound the leaf is the more efficient is the exchange. Species of plants are adapted to different light: shade plants have lower rate of saturation and photosynthesis due to less co2 intake. large surface area more photosynthesis, in shade. Increase in lobes allows sunlight to penetrate to lower canopy. Prevent water loss: the link between water demand and temperature influences plant adaptations, alternative photosynthetic pathway: Rubisco acts as oxygenase leads to photorespiration of which co2 is a by-product. This process actually doesn"t benefit the plant and kill the plant ultimately if the plant is not exposed to co2 source. Found in cool and temperate climate: bundle sheath doesn"t have chloroplasts nor rubisco.
