1. Star fish
2. Frog
3. Bird
4. Insect
Bird
1. Porous to O2 and CO2
2. Porous to air only
3. Porous to water only
4. Non-permeable
Porous to O2 and CO2
1. Gastrulation
2. Blastulation
3. Cleavage
4. Neurulation
Gastrulation
1. Oxytocin
2. Vasopressin
3. Follicle stimulating hormone
4. Luteotrophic hormone
Follicle stimulating hormone
1. Yolk plug
2. Ventral lip of blastopore
3. Dorsal lip of blastopore
4. Lateral lip of blastopore
Dorsal lip of blastopore
1. Convergence
2. Emboly and epiboly
3. Divergence
4. Epiboly and involution
Emboly and epiboly
1. Mouth
2. Nostril
3. Anus
4. Salivary glands
Anus
1. Due to addition of certain chemicals
2. Under extraordinary cold conditions
3. Under normal laboratory conditions
4. After washing with distilled water
Under extraordinary cold conditions
1. Amphioxus
2. Insects
3. Molluscs
4. Reptiles
Molluscs
1. Morula
2. Blastomere
3. Blastopore
4. Blastula
Blastomere