In this article we will discuss about:- 1. Meaning of Extraembryonic Structures in Chick Embryo 2. Formation of Yolk Sac and its Fate 3. Formation of Amnion and Serosa 4. Formation of Allantois. Meaning of Extraembryonic Structures in Chick Embryo: The embryo of chick possesses four extraembryonic or foetal membranes: namely, the yolk sac, the allantois, the amnion and the [...]
The following points highlight the top sixteen stages of embryology in plants. Some of the stages are: 1. T.S. Young (developing) Anther 2. T.S. Anther Showing Four Mature Pollen Sacs 3. T.S. Mature Anther Showing Dehiscence 4. Pollen Tetrads 5. Pollen Grain 6. Ovule Types 7. L.S. Anatropous Ovule 8. Archesporial Initial 9. Two-celled Stage of Megaspore Mother Cell 10. [...]
This essay provides information about the History of Embryology! Life and death have been fascinating subjects and have remained mysteries from time immemorial. How living beings came into existence? What is death? What happens after death? All these have been interesting subjects to scientists and have remained unsolved mysteries. Fragmentary knowledge was available during different stages of development of animals [...]
