Question

Give two differences between blastula and gastrul.​

Answer 1

Answer:

Explanation:

The main difference between blastula and gastrula is in the structure and components of each of the embryonic stages. Blastula develops from the morula in a process called blastulation.Gastrula develops from the blastula in a process called gastrulation.

Difference between Blastula and Gastrula

• During the process of embryogenesis, blastula formation is followed by the gastrula, thus both represents a different stage of embryo formation.
• The blastula and gastrula are formed through different processes. The blastula is formed through blastulation, while the gastrula is formed through gastrulation.
• The blastula and gastrula are formed through different speeds of mitotic divisions. The blastula is formed through rapid mitotic divisions of the zygote, while slow mitotic divisions of the blastula results in the gastrula.
• In the process of blastula formation, the cells do not move. However, during the gastrula formation process, the cell masses move through morphogenetic movements.
• Unlike the blastula, there are three distinct germ layers that are present in the gastrula.
• Given each is present at different stages of embryogenesis, the blastula is referred to as the ‘pre-embryo’, while the gastrula is known as the ‘mature embryo’.
• The gastrula has more cells present, than in the earlier blastula stage. A gastrula contains differentiated cells, while the earlier blastula stage only has undifferentiated cells.  

Answer 2

Answer in attachment!