question_answer 49)

  In what kind of plants do you come across "Kranz anatomy? To which conditions are those plants better adapted? How are these plants better adapted than the plants, which lack this anatomy?

Answer:

                  Kranz anatomy refers to the dimorphism in the chloroplast structure. It is found in  plants. The cells of leaves have two types of chloroplast in them. Granal Chloroplast It is found in the mesophyll cells of leaves. Chloroplast have well developed grana in them. These chloroplast effectively fix  even if it is present in lower concentrations. PEP carboxylase is present which fix  and to form oxaloacetic acid (4 carbon compound). Agranal Chloroplast Present in bundle sheath cells of the leaves.  cycle occurs in these cells with the presence of RuBisCo enzyme. The  plants are well adapted to high  concentrations and high temperature. plants can absorb  even when  concentration in much low thus  plants can perform high rate of photosynthesis even the stomata are closed or there is the shortage of water thus, they can conserve water. Since, PEP-carboxylase is insensitive to  thus excess  has us inhibitory effect in  pathway and there is no photosynthesis in  plant. Thus,  plants are better adapted to tropical and desert (hot acid habitats) areas than the plants, that lack this anatomy.