The blastula of a frog contains:

If the size of a fertilized egg of a frog is compared with the size of its blastula and gastrula stages,which of the following observations will be correct?

Which of the following is a good example of metamorphosis?

In a frog,what does the blastopore develop into?

The structure which remains unchanged during the metamorphosis of a frog's tadpole is:

The development of the eye in vertebrate embryology is studied under which of the following processes?