Literally, embryology is the study of embryos, where embryo denotes the juvenile stage, either within the egg-shell, egg membranes or in the mother’s womb. In the development stage, the embryo undergoes a number of changes. The changes occur not only in the body of the larva but also in habit or behaviour also. It is due to these dramatic changes that embryology has now been termed ‘Development Biology’ preferably. Metamorphosis, embryonic induction, ...
Animal behaviour is, obviously, the way in which animals-non human-lead their life, such as, feeding, migration to different parts in different seasons, sexual life, gregariousness etc. Different factors need to be studied to have right knowledge about animal behaviour. One of them is the concept of "Natural Selection" propounded by Darwin. He observes that species compete with each other for survival. Apart from animals, there also ...