Which of the following characteristics is are exhibited by C ₄ -plants? I. Kranz anatomy. II. The first product of photosynthesis is oxaloacetic acid. III. Both PEP carboxylates and ribulose biphosphate carboxylate act as carboxylating enzymes. The correct option is

Step-by-step solution

C ₄ -plants have an alternative CO ₂ fixation pathway called Hatch and Slack cycle. These plants have Kranz anatomy in leaf, where vascular bundles are surrounded by bundle sheath. In C ₄ cycle light reaction occurs in, mesophyll chloroplast by PEP carboxylaes and the assimilation of CO ₂ takes place in, i.e., dark phase in bundle sheath chloroplast by Rubisco.