Fill in the table “Comparative characteristics of the classes of vertebrates”.

bystudin | October 30, 2020 | Education

Signs	Fish	Amphibians	Reptiles	Birds	Mammals
Tep’s veils	Scales	Glandular integuments	Horny	Per’evoy	Wool
Respiratory system	Gills	Light and code	Lungs	Lungs	Lungs
Number of circles of blood circulation	1	2	2	2	2
Number of chambers in the heart	2	3	3	4	4
Cold blooded or warm-blooded	Cold blooded	Cold blooded	Cold blooded	Warm-blooded	Warm-blooded
Feature of the brain	Well developed midbrain	More developed hemispheres	Well-developed forebrain	The cerebellum is well developed	Large hemispheres are well developed
Fertilization, external or internal	Outdoor	Outdoor	Internally	Internally	Internally
The place of the beginning of the development of the embryo	roe	egg	egg	egg	mother’s body
Caring for offspring	No	No	No	Yes	Yes

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