CBSE Class 10 Biology How Do Organisms Reproduce?
Reproduction and Its KindsReproduction is the biological process by which new individuals are produced.
Copying of the DNA is one of the key processes of reproduction.
In Asexual reproduction only one parent is involved and an exact copy of the parent is produced. Sexual reproduction involves two sexually distinct individuals and promotes diversity of characters.
Modes of Asexual ReproductionPlants with inconspicuous reproductive organs are called Cryptogams.
Thallophytes are plants without a well-differentiated and distinct body whereas, Bryophytes are plants with differentiated body but without vascular tissues.
Pteridophytes show a well-differentiated plant body and vascular tissues.
Sexual Reproduction in PlantsSexual Reproduction in Plants
Reproductive System in HumansSexual maturation takes place in humans during puberty.
Male and female undergo several changes during puberty.
In males, the testes produces sperm.
In females, the ovary produces ova that are released every month.
Sexual Reproduction in HumansMenstrual cycle is the monthly cycle of breakdown of the lining of the uterus.
Fertilisation is the fusion of male and a female gamete. Gestation period for growth of fetus is 280 days.
AIDS, Gonorrhea and Syphilis are the common sexually transmitted diseases.
The methods to avoid contraception are barrier method, chemical method and surgical method.