The C ₄ -plants are photosynthetically more efficient than C ₃ -plants because

Step-by-step solution

C ₄ -plants show Kranz anatomy. In the leaves of C ₄ -plants, the vascular bundles are surrounded by bundle sheath of parenchymatous cells, which in turn are surrounded by mesophyll cells. Chloroplasts in bundle sheath cells are larger and always contain grana whereas chloroplasts in mesophyll cells are smaller. The C ₄ -plants are photosynthetically more efficient than C ₃ -plants because they have more chloroplasts. Photorespiration takes place only in C ₃ -plants. It occurs in chlorophyllous tíssue. At high temp