H03 CH. 23 ANIMAL KINGDOM (PRACTICE TEST)
True/False
Indicate whether the sentence or statement is true or false.
____1.Without exception, all animals are heterotrophs.
____2.The majority of animal species are classified as invertebrates.
____3.All animal cells lack cell walls.
____4.Multicellularity enables individual cells to specialize on one life task.
____5.A tissue is a group of dissimilar cells that are organized into a functional unit.
____6.The first animals to evolve in the ancient oceans had bilateral symmetry.
____7.Bilateral symmetry divides an organism into distinct left and right halves.
____8.Jellyfish and echinoderms both exhibit radial symmetry, demonstrating that they are close relatives.
____9.Most radially symmetric animals are aquatic.
____10.The development of a true coelom between the ectoderm and the mesoderm represents a true evolutionary advance over the pseudocoelomate body plan.
____11.All bilaterally symmetric animals have the same internal body plan.
____12.The development of a body cavity did not affect the evolution of organs.
____13.The body cavities of coelomates are located entirely within the ectoderm.
____14.Segmentation occurs in the bodies of higher vertebrates (annelids, arthropods, and echinoderms) but is not present in chordates.
____15.Animals are grouped into phyla based on similar body plans.
____16.Anatomy and physiology are never used to determine evolutionary relationships between animal phyla.
____17.Single celled organisms and sponges digest their food within their body cells.
____18.All animals have nerve cells.
____19.In a closed circulatory system, oxygen and nutrients are exchanged directly between the cells and the environment.
____20.Internal fertilization is a sexual reproductive strategy used by most terrestrial animals.
Multiple Choice
Identify the letter of the choice that best completes the statement or answers the question.
____21.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.
____22.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.
____23.Organism B is
a. / radially symmetrical. / c. / unilaterally symmetrical.b. / bilaterally symmetrical. / d. / nonsymmetrical.
____24.Refer to the illustration above. The position of the arrow labeled ____ can be referred to as anterior.
a. / 1 / c. / 5b. / 4 / d. / 6
The diagrams below are cross sections of three types of animal bodies.
____25.Refer to the illustration above. An organism with no body cavity is shown in diagram
a. / A. / c. / C.b. / B. / d. / None of the above
____26.Refer to the illustration above. The organism shown in diagram B is a(n)
a. / acoelomate. / c. / coelomate.b. / pseudocoelomate. / d. / vertebrate.
____27.Refer to the illustration above. Humans have a body plan similar to that of the organism shown in diagram
a. / A. / c. / C.b. / B. / d. / None of the above
____28.Refer to the illustration above. Which diagram shows an organism that probably has a circulatory system?
a. / Ab. / B
c. / C
d. / None of the organisms illustrated would have a circulatory system.
Completion
Complete each sentence or statement.
29.Since animals cannot make their own food, they are said to be ______.
30.Multicellularity allows for ______of cells.
31.All animals are heterotrophs and are ______.
32.Since sponges do not have body parts that grow around a central point as do all other animals, the sponges are said to lack ______.
33.An animal whose body parts are arranged around a central point, like spokes around the hub of a wheel, has ______symmetry.
34.A(n) ______is a term used to describe an animal’s shape, symmetry, and internal organization.
35.Animals with ______symmetry have body parts arranged around a central axis.
36.Distinct right and left halves are characteristic of ______symmetry.
37.Cephalization concentrates sensory organs in the ______end of an animal.
38.Organisms that have left and right halves that mirror each other when divided by an imaginary longitudinal plane are said to have ______symmetry.
39.The evolution of a definite head end is called ______.
40.The ______is a fluid-filled cavity that develops within the mesoderm of higher invertebrates and vertebrates.
41.An animal without a body cavity is called a(n) ______.
42.A(n) ______tree is a model developed by scientists used to illustrate relationships between animal phyla.
43.Animals without backbones are called ______.
44.Animals with backbones are called ______.
45.Annelids, arthropods, echinoderms, and chordates all have ______bodies.
46.A(n) ______is a collection of different tissues that work together as a unit to perform a particular function.
47.A group of different tissues that are dedicated to one function is called a(n) ______.
48.In simple animals, oxygen gas and carbon dioxide are exchanged directly with the ______by diffusion.
49.Many aquatic organisms release their gametes into the water where ______fertilization takes place.
50.An organism that produces both eggs and sperm is called a(n) ______.
Essay
51.From a development point of view, what is the advantage of the coelomate body plan over the pseudocoelomate body plan?
52.Explain the advantage of internal digestion.
53.Why is external fertilization not a practical reproductive strategy for terrestrial animals?
H03 CH. 23 ANIMAL KINGDOM (PRACTICE TEST)
Answer Section
TRUE/FALSE
1.T
2.T
3.T
4.T
5.F
6.F
7.T
8.F
9.T
10.F
11.F
12.F
13.F
14.F
15.T
16.F
17.T
18.F
19.F
20.T
MULTIPLE CHOICE
21.C
22.B
23.A
24.B
25.A
26.B
27.C
28.C
COMPLETION
29.heterotrophs
30.specialization
31.multicellular
32.symmetry
33.radial
34.body plan
35.radial
36.bilateral
37.anterior
38.bilateral
39.cephalization
40.coelom
41.acoelomate
42.phylogenetic
43.invertebrates
44.vertebrates
45.segmented
46.organ
47.organ
48.environment
49.external
50.hermaphrodite
ESSAY
51.The development of the coelom totally within the mesoderm allows contact between the mesoderm and the endoderm. Such contact permits development of organ systems more complex than those in pseudocoelomate organisms.
52.Internal digestion allows animals to eat organisms larger than themselves by taking pieces of those organisms into the body to be digested. The gut of a cnidarian allows this process to take place. A sponge has no gut and is able to consume only organisms small enough to be absorbed by the cells lining its internal cavity.
53.External fertilization involves the fertilization of eggs by sperm within the environment. Flagellated sperm require a liquid medium to propel themselves towards eggs and potential fertilization opportunities. On land, gametes would quickly dry out limiting the likelihood of fertilization.