AFNS — AFNS Biology

A) Notochord / dorsal nerve cord

B) Exoskeleton only

C) No nervous system

D) No circulation

A) Pisces

B) Amphibia

C) Reptilia

D) Mammalia

A) Aquatic larval and terrestrial adult often

B) Only desert

C) Only sky

D) Only deep sea always

A) Dry scaly skin

B) Moist skin without scales

C) Gills as adult

D) No vertebrae

A) Feathers and beak

B) Fur

C) Scales only

D) Spines only

A) Mammary glands / hair often

B) No vertebrae

C) Cold blood always

D) No diaphragm

A) Constant body temperature

B) No temperature

C) Only cold body

D) Only plant temperature

A) Variable body temperature

B) Fixed high temperature

C) No metabolism

D) No blood