Development of Sex Organs which show sex organs of humans. At puberty, male sex organs like the testes and penis develop completely. The testes also begin to produce sperms. In girls, the ovaries enlarge and eggs begin to mature. Also ovaries start releasingmature eggs.
The growing voice box in boys can be seen as a protruding part of the throat called Adam’s apple
The human body undergoes several changes during adolescence. These changes mark the onset of puberty. The most important change which marks puberty is that boys and girls become capable of reproduction. Puberty ends when an adolescent reaches reproductive maturity.
Since this period covers the ‘teens’ (13 to 18 or 19 years of age), adolescents are also called ‘teenagers’. In girls, adolescence may begin a year or two earlier than in boys.
Adolescence begins around the age of 11 and lasts upto 18 or 19 years of age
Story of Dolly, the CloneCloning is the production of an exact copy of a cell, any other living part, or a complete organism. Cloning of an animal was successfully performed for the first time by Ian Wilmut and his colleagues at the Roslin Institute in Edinburgh,Scotland. They successfully cloned a sheep named Dolly . Dolly …
Binary fission is a form of asexual reproduction in which an organism divides into two, each part carrying same genetic material in the offsprings.
. Since new individuals develop from the buds in hydra, this type of asexual reproduction is called budding.
In each hydra, there may be one or more bulges. These bulges are the developing new individuals and they arecalled buds.
The transformation of the larva into an adult through not changes by complete process is called incomplete metamorphosis egg → tadpole (larva) → adult. eg Frog etc.
