I can only assume that you mean ectotherm and not ectoderm.
Ectoderm is the outer germ layer of an embryo.... so this wouldn't make sense.
An ectotherm is a cold-blooded animal (e.g. amphibians). The animal depends on external sources to regulate its body temperature.
This is opposed to an endotherm, which is warm-blooded (e.g. mammals, birds...). They regulate their temperature themselves, creating most of their heat through metabolic processes.
The 'rubber eel' is a species of caecilian which makes it an amphibian.
Its webbed feet
Nervous tissue is derived from the ectoderm germ layer during embryonic development.
No, the ectoderm is not uniformly pigmented. Pigment distribution can vary within the ectoderm due to factors like genetic variation, exposure to sunlight, and presence of certain pigments like melanin.
Ectoderm
All nervous tissue arise from ectoderm. Whether central or peripheral. It is anatomical division. Functionally all nervous cells are connected to each other.
The three germ layers of a gastrula are the ectoderm (outer layer), mesoderm (middle layer), and endoderm (inner layer). These layers give rise to different tissues and organs in the developing embryo through a process known as gastrulation.
ectoderm is the young epidermis, same with endoderm, it is the young gastrodermis.
Amphibians are distinctive because they can live in water and on land.
Ectoderm, endoderm, and mesoderm can produce epithelial tissues
endoderm, mesoderm, then ectoderm
ectoderm