nios ssc science lesson chapter 29

: 238 : Rep rodu ction 29 Reproduction Reproduction is the process by which a living organism is able to produce more of its own kind. The continuity of life on earth, from its origin to the present day, has been possible only because of reproduction. Living organisms reproduce in two ways—asexual and sexual reproduction. In this lesson we will learn about the modes of reproduction in plants and animals especially humans, population growth and its control and sexually tr ansmitted diseases. OBJECTIVES After completing this lesson, you will be able to: • defin e rep roduc tion and differ entia te be tween asexu al an d se xual reprod uctio n; • des cri be d iff ere nt mode s of rep roduct ion in plan ts; • illus trate male and femal e rep rodu ctiv e sys tems in hu mans and state functions of each part; • des cribe the p hysi cal an d phy siol ogic al cha nge s occ urrin g dur ing pu berty and menstrual cycle; • desc ribe the main even ts in the proce ss o f rep roduc tion i n hu mans starti ng from the production of gametes to pregnancy and parturition; • reco gnize the fa ctors respo nsibl e for the g rowth of po pula tion a nd ex plain the consequenc es of rapid increase in population; • reason o ut th e importa nce of c ontra cepti on a nd s uggest method s for contr ol of population growth; • emph asiz e the impor tance of rep roduc tive healt h an d su gges t way s to prev ent transmission of sexually transmitted diseases. 29.1 TYPES OF REPRODUCTION Living organisms reproduce in two ways—asexual and sexual reproduction. 29.1.1 Asexual reproduction Asexual reproduction involves the production of an offspring from body parts other than reproductive organs. It is a common process of reproduction in lower plants and animals.

nios ssc science lesson chapter 29

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