1. Which of the following organ is formed during gastrulation?

2. Mesoderm gives rise to all the structures except ______

3. In human females, the fertilized eggs get implanted in the uterus after ________

4. Brain, nerve cells and spinal cord or the central nervous system develops from embryonic ______

5. Which of the following options contains only the mesodermal structures?

6. Implantation is the process of__________

7. Which of the following embryo has a parasitic mode of nutrition?

8. which of the following events is likely to take place, if the nuclei from an 8-celled stage of an embryo are transplanted into enucleated eggs

9. Egg implantation is followed by______

10. Pseudopregnancy is a physiological condition, comparable to normal pregnancy except that there is no__________