In this article we will discuss about:- 1. Meaning of Placenta 2. Types of Placenta 3. Organogenesis 4. Functions. Meaning of Placenta: The embryo, specially in eutherian mammals, becomes implanted to the uterine wall. The process of implantation involves tissue interaction and establishment of connection between the uterine wall and the extraembryonic membranes. The region of attachment between the embryonic [...]
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 [...]
