Two very small organisms X and Y both reproduce by the method of budding. Organism X is industrially very important because it is used in making alcohol from sugar. It is also used in making bread. Organism Y lives in freshwater. If organism Y gets cut into a number of parts accidently, each cut part can grow to form complete organism.
(a) What are organisms X and Y ?
(b) What is the name of the process in which X converts sugar into alcohol ?
(c) To which class of organisms does X belong?
(d) Name an important body feature of organism Y.
(e) Which organism is multicellular and which one is unicellular?
(a) X is yeast and Y is hydra.
(b) The process by which sugar converts into alcohol is fermentation.
(c) Yeast (X) belongs to class fungi.
(d) Hydra (Y) has tentacles that wave in the water.
(e) Yeast (X) is unicellular and Hydra (Y) is multicellular.