Study life

 Transportation in Plants We have discussed earlier how plants take in simple compounds such CO, and photosynthesise energy stored in their chlorophyll-containing organs, amely leaves. The other kinds of raw materials needed for building plant bodies will also have to be taken up separately. For plants the soil is the nearest and nichest source of raw materials like nitrogen phosphorus and other minerals. The absorption of these substances therefore occurs through the part in contact with the sot, namely roots If the distances between sell-contacting organs and chlorophyll- containing ongans are small, energy and raw materials can easily diffuse to all parts of the plant body. But if these distances become large because of changes in plant body design, diffusion processes will not be sufficient to provide raw material in leaves and energy in roots A proper system of transportation is therefore essential in such situations. Energy needs differ between different body designs Plants d...