The correct answer is B: \(C_4 \space{plants}\) It is present in \(C_4\). Dimorphism of chloroplast refers to the two distinct types of chloroplasts present within the same plant cell. It is present in the \(C_4\) plants, they have the mechanism to cope with the hot and dry environment. \(C_4\) plants exhibit kranz anatomy but the bundle sheath can be both single and double layered.