Answer:
see below
Step-by-step explanation:
Answer 5 :-
Here according to the given series, after mouse the mammary gland developed that is in chimpanzee.
Answer 6:-
Hagfish does not have jaws, as they come under Agnatha . Above it in the series from perch to chimpanzee all have jaws .
Answer 7:-
in the series above hagfish all have lungs that is salamanders ,lizards , pigeon, mouse and chimpanzee.
Salamander have small sac like lungs and are relatively simple as compared to aves or mammels .
Answer 8:-
The main difference between a salamander and lizard is that salamander are grouped in Amphibia and lizards come under Reptiles . So salamanders can live on both land and water but lizard can live only on land .
hope this helps!