Question

Agranal chloroplasts occur in

• A. Succulent plants.
• B. $C_3$ plants.
• C. $C_4$ plants.
• D. Hydrophytes.

Answer 1

The correct option is C $C_4$ plants.

• The C${}_4$ plants are characterized by dimorphic chloroplasts. The chloroplasts of mesophyll cells contain PEP carboxylase and fix atmospheric carbon dioxide into temporary organic acids.
• These chloroplasts lack RUBISCO and have grana. The chloroplasts of bundle sheath cells fix carbon dioxide derived from the decarboxylation of organic acids.
• The chloroplasts of bundle sheath cells contain RUBISCO for carbon dioxide fixation and lack of grana.
  Hence, the correct answer is C.