The correct answer is (d) It is smaller and does not give shape to the animal cell.
Animal cells have smaller vacuoles as compare to that of plant cell. It does not decides the shape of the of the animal cell. The main function of vacuoles in animal cell is endocytosis and exocytosis. They store the waste material. In plant cell the vacuoles cover almost 90% of the space and decides the shape of the plant cell as they are filled with water. This helps the plant cell to maintain turgor pressure.
The correct answer is lactic acid fermentation.
Lactic acid fermentation refers to a metabolic procedure by which glucose and other six-carbon sugars, like lactose or sucrose are transformed into cellular energy and the metabolite lactic acid that is a lactate in solution.
It is an anaerobic fermentation reaction, which takes place in certain kinds of bacteria and animal cells, like muscle cells.
