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Which of the following is NOT an advantage of having a true coelom?


A) In some animals,sperm and eggs can be stored before they are released
B) The digestive system can be coiled and provide greater surface area
C) Muscle contractions against the fluid chambers are absorbed and have no effect
D) In some animals,fluids here can assist respiration and circulation,and accumulate metabolic wastes

E) B) and D)
F) All of the above

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A blastula develops into which state as the gut cavity develops?


A) It remains in the blastula stage.
B) gastrula
C) acoelomate
D) pseudocoelomate

E) A) and D)
F) B) and C)

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_________________ is a fibrous protein found in connective tissue,and probably the most abundant protein in the animal kingdom.

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The tissue type composed of fibers and fixed and wandering cells suspended in a fluid matrix is _________ __________ ________.

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loose conn...

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Diploblastic organisms lack which germ layer(s) ?


A) Endoderm
B) Ectoderm
C) Mesoderm
D) Mesoderm and endoderm

E) A) and D)
F) A) and B)

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Which is NOT a factor in cephalization?


A) Improving food procurement by moving the mouth to the region of greatest sensing
B) Directed movement through an environment
C) Concentration of sensory organs at the point first likely to encounter the environment
D) Concentration of the sensory organs to increase sexual copulatory function

E) A) and B)
F) A) and C)

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Animals that have one solid mass of tissue rather than tissues and organs nestled inside a body cavity are


A) acoelomate.
B) eucoelomate.
C) pseudocoelomate.
D) coelomate.

E) A) and B)
F) B) and D)

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Which of these is NOT one of the characteristics of a vertebrate?


A) Radial symmetry
B) Segmentation
C) Extreme cephalization
D) Coelom

E) None of the above
F) B) and C)

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Which tissue includes the epidermis?


A) Muscle tissue
B) Nervous tissue
C) Epithelial tissue
D) Connective tissue

E) B) and C)
F) A) and D)

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Which of the following is NOT a correct association of the supportive material of an organism and its function?


A) The cuticle of an insect provides protection
B) Cartilage of chordates provides stability and protection
C) Loose connective tissue generally holds the body together
D) Blood plasma is an important hydrostatic fluid in humans
E) Bone provides stability and protection as well as a storage place for minerals

F) A) and C)
G) None of the above

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Which of the following is NOT a function of connective tissue?


A) Line body surfaces and cavities
B) Bind and support body parts
C) Store energy (e.g. ,fat)
D) Produce blood cells

E) A) and B)
F) A) and C)

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Animals with organs in a cavity that is not completely lined with mesoderm are


A) acoelomate.
B) eucoelomate.
C) pseudocoelomate.
D) coelomate.

E) B) and C)
F) A) and B)

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A ________ plane divides an animal into right and left halves.

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Your nose would be considered


A) medial,anterior,and dorsal.
B) medial,anterior,and ventral.
C) medial,posterior,and ventral.
D) lateral,anterior,and ventral.

E) All of the above
F) B) and C)

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Which of the following statements is NOT true about cartilage?


A) Collagen in cartilage is otherwise a relatively rare substance in animals
B) Cartilage is a semi-rigid form of connective tissue with packed fibers embedded in a gel-like matrix
C) The matrix of cartilage includes collagen and elastic fibers
D) The skeleton of the human fetus is originally made up of cartilage

E) All of the above
F) A) and C)

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