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Name:  Introduction to Animals

 

True/False Indicate whether the sentence or statement is true or false.
TF	1.	A tissue is a group of dissimilar cells that are organized into a functional unit.
TF	2.	The development of a particular animal’s body plan depends on the animal’s environment, rather than on the genetic information it carries.
TF	3.	Flatworms are bilaterally symmetrical and cephalized.
TF	4.	The fluid in the body cavity of an animal acts as a medium of transport for nutrients and wastes.
TF	5.	All chordates retain their postanal tail in their adult life.
TF	6.	Most invertebrates have kidneys that filter waste products from the blood.
TF	7.	Terrestrial animals have a protective outer covering that helps prevent excessive water loss.
TF	8.	Segmentation is evident in vertebrates in the repeating bony units of their backbones and ribs.
TF	9.	During spiral cleavage, each cell of the blastula rests directly above or below an adjacent cell.
TF	10.	In a cnidarian, endoderm forms the outer tissue and nervous system.
Multiple Choice Identify the letter of the choice that best completes the statement or answers the question.
ABCD	11.	A group of similar cells organized into a functional unit is called a. a nervous system. c. a tissue. b. specialized cells. d. an organ.
ABCD	12.	Most animals have a head that is located at the ____ end of their body and a tail that is located at the ____ end of their body. a. ventral; dorsal c. anterior; posterior b. dorsal; ventral d. posterior; anterior
ABCD	13.	Refer to the illustration above. The organism labeled “B” in the diagram a. is asymmetrical. c. exhibits radial symmetry. b. is bilaterally symmetrical. d. has reverse symmetry.
ABCD	14.	Refer to the illustration above. The organism labeled “A” in the diagram a. has no symmetry. c. exhibits radial symmetry. b. is bilaterally symmetrical. d. has reverse symmetry.
ABCD	15.	Which of the following is found in vertebrates but not in invertebrates? a. dorsal nerve cord c. three germ layers b. coelom d. bilateral symmetry
ABCD	16.	A characteristic shared by all chordates at some stage of their development is a. a dorsal hollow nerve cord. c. pharyngeal pouches. b. a notochord. d. All of the above
ABCD	17.	Which of the following is not a characteristic of the largest phylum of invertebrates, the arthropods? a. segmentation c. closed circulatory system b. exoskeleton d. digestive tract
ABCD	18.	The acoelomate body type is exemplified by a. flatworms. c. mollusks. b. roundworms. d. annelids.
ABCD	19.	Which of the following is an incorrect match? a. ectoderm—nervous system c. endoderm—muscular system b. mesoderm—skeletal system d. endoderm—digestive system
		The diagrams below are cross sections of three types of animal bodies.
ABCD	20.	Refer to the illustration above. Humans have the type of body cavity shown in diagram a. “A.” c. “C.” b. “B.” d. None of the above