10th Class Science Human Reproduction Reproduction

 Reproduction

• The phenomenon of the formation of new individuals from the existing ones to increase the population is called reproduction.

• The process of reproduction ensures the continuity of a race and the perpetuation of characteristics of the species and particularly the parent organisms.

• Reproduction can be broadly grouped into two types: asexual reproduction and sexual reproduction.

• Sexual reproduction is the process during which a new individual is formed by the fusion of a male reproductive cell with a female reproductive cell.

• Asexual reproduction is a mode of reproduction by which offsprings arise from a single parent and inherit the genes of that parent only.

• Fertilisation is the fusion of gametes to produce a new organism.

• Various organisms use different modes of reproduction depending on their body design.

• Different forms of asexual reproduction :

• The roots, stems and leaves of some plants develop into new plants through vegetative propagation.

• The different parts of the human male reproductive system are seminal vesicle, scrotum, penis, testis, prostate gland, sperm duct, sperm (male gamete).

• Parts of the human female reproductive system are uterus, cervix, fallopian tube, ovary, vagina.

• Reproduction in flowering plants involves pollination or the transfer of pollen grains from the anther to the stigma. This is followed by fertilisation.