Chapter Newryws Questions Distinguish between a blastula a b

Chapter Newryws Questions Distinguish between a blastula, a blastomere, a blastopore, and a blastocoel 2. What happers at the mid blastula transition 1.Which part of the xenopM blastula becomes the mesodenm Where does the dorsal lip tissue end up when uenopa gastrulation is finished 5. Where does the vegetal pole end up when gatrulationisfinished? 6. How is the comral nervous system formed? Where does the neural crest come from and what does it bocome? & What are the main tissue types formed from the mesodem? 9. What happens during the cortical routine? What is the principal determinant for endodamm formation What are the main mesodem-inducing factors in Menopw?

Solution

Answer1]

Distinguish between

1] Blastula = Is a hollow sphere of cells blastomeres surrounding an inner fluid filled cavity called blastocoel formed during an early stage of embryonic development in animals

2] Blastomere= Is a type of cells formed by cleavage of zygote after fertilization

Thase are important parts of blastula

3] blastopore= Animals that undergoes gastrulation during development will form a gastrula with two i.e diploblastic or 3 i.e triploblastic germ layers additionally gastrula has opening called as blastopore

4] Blastocoel = Is a fluid filled cavity of blastula

Results from oocyte after fertilization