HERIDITY AND VARIATION Whenever an infant is born in a family, the relatives begin to wonder about the resemblance of the infant’s eyes, facial features, complexion, colour of hair with…

PRINCIPLE OF GENETICS It is common observation that seeds of mango trees grow into mango plants, does give birth to puppies and not into the young ones of any other…

Explore solutions to global POPULATION PROBLEMS AND CONTROL measures in this comprehensive guide. Learn about sustainable practices, family planning, and societal interventions to address the challenges of overpopulation. Discover key…

REPRODUCTION IN HUMAN The humans reproduce sexually. Reproduction in humans can be studied in two parts (a) Reproductive system, and (b) Fertilization, Pregnancy and development of the embryo. (a) Reproductive System…

REPRODUCTION The ability to reproduce is one of the essential characteristics of living beings. It involves the transmission of genetic material from the parental generation to the next generation, thereby…

PLANT MOVEMENT While doing any work our body parts move and also entire body moves from ‘one place to another as per our desire.’ This is called movement of our…

Practical application of Growth Regulation Now a days this procedure widely used by horticulturists to boost their production. Some of the applications are – (i) With the help of auxins…

Stages of Cellular Growth The growth of an organism is always associated with growth of cells. This growth of cells occurs in three successive stages. They are (i) Cell division : The…