Their functions include secretion of various substances, secretion of pectic material of cells wall in plants, and helping in the formation of cell during cell division. ... In plants cells they are very big and surrounded by a membrane called tonoplast, whereas in animals they are tiny. ... All cells must maintain the right concentration of chemicals in their cytoplasm, ingest food and use it for energy, recycleanbsp;...
|Title||:||The Pearson Guide To The B.Sc. (Nursing) Entrance Examination|
|Author||:||Parwez Dr Saroj|
|Publisher||:||Pearson Education India - 2007-09-01|