STPM Biology - chapter 4(old syllabus) chapter 6 (new syllabus): Revision essay question 8

8. With aid of table,show the anatomical differences between leaves of C3 and C4 plants.

Answer:

C3 Plants		C4 Plants
C3 has only one type of chroroplast.		C4 plants contain two types of chloroplast.Chloroplast in mesophyll cells of C4 leaves contains large grana and is without starch granules.Chloroplast in bundle sheath cells has very little or absolutely no grana and starch.
A small number of plants contain bundle sheath.It exists the bundle sheath cells are usually small.		C4 leaves have bundle sheath around vascular bundle.
No Krantz’s anatomy	Leaves have Krantz’s     anatomy.