7 янв. 2020 г. · By the next day, continued cleavage has produced a hollow ball of thousands of cells called the blastula. A fluid-filled cavity, the blastocoel, ... |
The Blastocoel in blastula is located above the equator, therefore it is called as eccentric in position. 3. Blastocoel is surrounded by two types of. |
Advancing cleavages of the frog's fertilised egg produces an embryonic stage, with a fluid filled cavity called as Blastula. The cavity of blastula is ... |
The blastula of frog is mono-layered which in course of gastrulation becomes converted into a triploblastic stage, i.e., three cell-layered. These three layers ... |
5 апр. 2020 г. · The whole surface of a frog blastula can be divided into: • 1. A large dark grey or black area on and around the animal pole. It consists of ... |
The blastula is generally a spherical layer of cells (the blastoderm) enclosing a fluid-filled or yolk-filled cavity (the blastocoel). > |
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