Zoology Class 12 Entrance Notes

EMBRYONIC DEVELOPMENT OF FROG

The development of frog is divided into two phases: 1. Pre-natal or Embryonic development ·   It is the development that takes place inside the egg or inside the womb of the mother up to the gastrula stage from the zygote. 2. Pos…

APPLICATION OF BIOLOGY: ANTIBIOTICS & VACCINES

ANTIBIOTICS Introduction ·  Antibiotics are the chemical substances produced by or derived from microorganisms (bacteria or fungi), which kill or suppress the growth of other microorganisms at very low concentrations. ·  The firs…

APPLICATION OF BIOLOGY: TISSUE & ORGAN TRANSPLANTATION

·  Transplantation is defined as the removal of tissue or organ from one part of the body and transplanting it to another part of the body of the same person or another person of the same species or another individual of diff…

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