Extra embryonic membrane amnion is not found in amphibians because
They lay eggs in water
Egg hatches in tadpole
Amphibious habit
They have smooth skin
Blastopore is found in
In ladies, the oviducts are cutted or removed surgically to avoid the chances of fertilization. This is called
During embryonic development the establishment of polarity along anterior / posterior, dorsa l/ ventral or medial / lateral axis is called
Failure of descending testis into scrotum is known as
Which of the following is ‘immortal’