12. Chordate identity card.
How are they characterized
according to examples of
representing beings, basic
morphology, type of
symmetry, germ layers and
coelom, digestive system,
respiratory system, circulatory
system, excretory system,
nervous system and types of
reproduction?

Gap-fill exercise

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Examples of representing :
protochordates (ascidians, amphioxus),
. Basic morphology:
branchial , notochord, neural tube.
of symmetry: bilateral.
layers and coelom: ,
coelomates. Digestive system:
, deuterostomes. Respiratory
system: (in aquatic),
cutaneous ( adult amphibians),
pulmonary (). Circulatory system:
open protochordates, closed in
. Excretory system: diffusion
flame cells in ,
kidneys in vertebrates. system:
neural tube embryos, cerebral vesicle
single ganglion in ,
brain within the and spinal cord
the spinal column vertebrates.
Types of : sexual, with or
larval stage.