R1. Name structure and germ layer originA: Somites and Mesoderm

R3. What is this structure and what stage of development are we atA: Structure is the yolk sac and we are at the Blastula stage.

R2. Name structure and germ layer originA: Optic Cup and Ectoderm

R5. Name germ layer origin for this tissueA: Ectoderm. This is pointing at the epidermis of the embryo

R6. What specific tissue leads to the formation of this body structure.A: Looking for Neural Crest cells here. Ectoderm would get partial credit since that is the correct germ layer.

R4. Name process which allows ectoderm of zebra fish to pass over yolk sac during gastrulationA: Epiboly

R7. What is this called?A: Primative streak

R8. What is the name of the entire structure shown here? Hint: It’s not embryoA: Neural Plate

R9. Name structure and germ layer originA: Optic Cup and Ectoderm (geesh another Eye one…I should have made this difficult)