Answer:
planarians = flatworms
marine worms= segmented worms
leeches= segmented worms
pinworms= roundworms
tapeworms= flatworms
Explanation:
I took it on edge lol
The chorion develops into the PLACENTA, a pancake-like structure that is attached to the endometrium and is about 7 inches in diameter and 1-2 inches thick.
Placenta is an organ present inside the uterus that contains the fetus and connects the fetus to the uterine wall of the mother. The fetus derives all the nutrients and food from the mother with the help of placenta.
There is a change in amino acids sequence causes these mutations, If there is an error in the order of amino acids during the process of multiplication, there is a special enzyme to repair errors
I thinks its cell division