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10474899Please help me answer all of those questions.

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1) This part of the animal embryo will give rise to the
digestive tract of the adult animal body
A) Ectoderm
B) Mesoderm
C) Blastopore
D) Coelom
E) Archenteron
2) In order for an organism to be considered an animal by
the current definition, which of the following criteria
Must be true? Select all that apply.
A) The cells of the organism must have cell walls
B) The organism must have bilateral symmetry
C) Ingestion must be the mode of nutrition
D) There must be a tube digestive
E) A coelom must be present
3) which of the following features apply to all
Arthropods? Select all that apply
A) the presence of an exoskeleton
B) Wings
C) Protostome development
D) A body cavity (coelom )
E) Bilateral symmetry
4)compared to a "sac" digestive tract (one opening ). the "tube"
digestive tract of most animals is better because
A. There is more room to store food
B. There can be simultaneous processing of food in different
stages
C. Diffusion takes care of all food movement on the tract
D. It is easier to repair if damaged
E. It allows the organism to feed from either end
5) this part of the animal embryo will give rise to the outer
covering of the adult animal body
A) Ectoderm
B) Mesoderm
C) Blastopore
D) Coelom
E) Archenteron
6) How can cnidarians such as sea jellies survive in the water
with no gills or hugs
A) They must periodically rise to the surface to get air
B) Their cells don't need oxygen since they move so little
C) They have special oxygen pumps in their cells
D) Their body walls are extremely thin
E) They don't have a nervous system which required a lot of
oxygen

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