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 is a tiny animal having tentacles which lives in water.
(a) What is organism X?
(b) Name the process in which X converts sugar into alcohol.
(c) To which class of organism does X belong?
(d) What is organism Y?
(e) Out of X and Y, which organism is multicellular and which one is unicellular?
(a) Yeast.
(b) Fermentation.
(c) Fungi.
(d) Hydra.
(e) Multicellular : Y (Hydra), Unicellular :X (yeast).
Draw and describe the male reproductive organs in humans.
How are the young ones of frogs and other aquatic animals produced?
How does the embryo get nourishment inside the mother’s body?
Draw a diagram of human reproductive organs and label sperm duct, penis and testis .
