Draw and describe the male reproductive organs in humans.
Male reproductive organs consist of a pair of testes, sperm ducts and penis. Testes are responsible for producing male gamete called sperm. Sperm is very small in size. It has a head, a middle piece and a tail. Sperms travel through sperm ducts and penis, and are released in female body for fertilization.
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?
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 .
How are the young ones of frogs and other aquatic animals produced?
