Describe the differences between palisade and spongy mesophyll cells. Identify the pathogens for amoebic dysentery and tuberculosis. Name organelle A and list three of its functions.

b) Palisade cells are elongated and tightly packed, while spongy mesophyll cells are irregularly shaped with large air spaces between them. (Alternatively: Palisade cells contain more chloroplasts than spongy mesophyll cells.) a) i) Amoebic dysentery: Entamoeba histolytica (a protozoan) ii) Tuberculosis: Mycobacterium tuberculosis (a bacterium) a) The organelle marked A is the Golgi apparatus (or Golgi complex/body). b) Three functions of the Golgi apparatus are: • Modifying, sorting, and packaging proteins and lipids synthesized in the endoplasmic reticulum. • Forming lysosomes (in animal cells) and cell plates (in plant cells during cytokinesis). • Synthesizing carbohydrates such as polysaccharides for the cell wall in plants.