A) the \[C{{O}_{2}}\]compensation point is more
B) \[C{{O}_{2}}\]generated during photorespiralion is trapped and recycled through PEP carboxylase
C) the \[C{{O}_{2}}\]efflux is not prevented
D) they have more chloroplasts
Correct Answer: D
Solution :
\[{{\text{C}}_{\text{4}}}\text{-}\]plants show Kranz anatomy. In the leaves of \[{{\text{C}}_{\text{4}}}\text{-}\]planis, 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 \[{{\text{C}}_{\text{4}}}\text{-}\]plants are photosynthetically more efficient than \[{{\text{C}}_{3}}\text{-}\]plants because they have more chlorop lasts.
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