Download - ISpatula

 Chapter 32, 10th edition
Q1.Which characteristic below is shared by plants, fungi, and animals? ( Concept 32.1)
A) B) C) D) E) They are multicellular eukaryotes.
They are heterotrophs.
Their cells are supported and connected to one another by structural proteins.
They release enzymes to the outside of the body to aid in digestion.
They have cell walls.
The Answer is : A
Q2.Animals probably evolved from colonial protists. How do animals differ from these protist ancestors? (
Concept 32.1)
A) B) C) D) E) The protists were autotrophic.
The protists were prokaryotic.
Animals are able to reproduce.
The protists were heterotrophic.
Animals have more cells than their protist ancestors, and their cells show greater
specialization.
The Answer is : E
Q3.During the development of most animals, cleavage leads to __________. ( Concept 32.1)
A) B) C) D) E) fertilization
a multicellular blastula
the formation of a gastrula
the formation of a zygote
metamorphosis
The Answer is : B
Q4.Many young animals are __________, a sexually immature form that is morphologically distinct from the
adult stage. These young animals undergo __________ to become __________, which resemble adults but
are not yet sexually mature. ( Concept 32.1)
A) B) C) D) E) The Answer is : B
juvenile ... metamorphosis ... adults
larvae ... metamorphosis ... juveniles
larvae ... gastrulation ... juveniles
larvae ... metamorphosis ... adults
juvenile ... gastrulation ... adults
Q5.Which of the following correctly lists the embryonic stages in the order that they develop? ( Concept 32.1)
A) B) C) D) E) blastula, zygote, gastrula, larva
zygote, gastrula, blastula, larva
zygote, blastula, larva, gastrula
zygote, larva, gastrula, blastula
zygote, blastula, gastrula, larva
The Answer is : E
Q6.Which of the following groups does NOT exhibit bilateral symmetry? ( Concept 32.3)
A) B) C) D) E) annelids
jellies
chordates
arthropods
molluscs
The Answer is : B
Q7.Which of the following features is associated with bilateral symmetry? ( Concept 32.3)
A) B) C) D) E) a sessile lifestyle
sponges
cephalization
diploblastic body plan
a lack of true tissues
The Answer is : C
Q8."Cephalization" refers to having _____. ( Concept 32.3)
A) B) C) D) E) The Answer is : A
a dorsal and a ventral surface
a right and a left side
ectoderm
a head
radial symmetry
Q9.Which of the following is a characteristic of cnidarians? ( Concept 32.3)
A) B) C) D) E) ectoderm and endoderm
a lack of true tissues
mesoderm
triploblastic bodies
bilateral symmetry
The Answer is : A
Q10.In the embryo of a shark, ectoderm gives rise to __________; mesoderm gives rise to __________;
endoderm gives rise to __________. ( Concept 32.3)
A) B) C) D) E) muscle ... the outer covering of the animal ... the lining of the digestive tube
the central nervous system ... muscle ... the lining of the digestive tube
the lining of the digestive tract ... muscle ... the outer covering of the animal
muscle ... the outer covering of the animal ... the central nervous system
the central nervous system ... the outer covering of the animal ... the lining of the digestive
tube
The Answer is : B
Q11.All animals with bilateral symmetry have __________ germ layer(s). ( Concept 32.3)
A) B) C) D) E) zero
one
two
three
four
The Answer is : D
Q12.A true coelom is __________. ( Concept 32.3)
A) B) C) D) E) The Answer is : A
a body cavity lined with mesoderm
a thoracic body cavity
a body cavity lined with tissues derived from the endoderm
a body cavity lined with endoderm and mesoderm
an abdominal body cavity
Q13.One of the primary developmental/anatomical characteristics distinguishing the major animal phyla is the
condition of the body cavity. A pseudocoelomate animal is one in which the body cavity is __________. (
Concept 32.3)
A) B) C) D) E) bounded completely by mesoderm
filled by a solid mass of mesoderm
bounded completely by endoderm
lined on one side by mesoderm and on the other side by endoderm
bounded partly by ectoderm
The Answer is : D
Q14.The presence of a coelom is advantageous because __________. ( Concept 32.3)
A) B) C) D) E) it allows for a third embryonic germ layer
it is a requirement for a complete digestive tract
it permits the development of an open circulatory system
it allows room for the development and movement of internal organs
All of the listed responses are correct.
The Answer is : D
Q15.Indeterminate cleavage produces embryonic cells that __________. ( Concept 32.3)
A) B) C) D) E) form ectoderm but not endoderm or mesoderm
form eggs or sperm
do not divide according to any recognizable pattern
retain the capacity to develop into a complete embryo
form mesoderm but not endoderm or ectoderm
The Answer is : D
Q16.The zygotes of many protostomes undergo __________ cleavage and __________ cleavage. (
Concept 32.3)
A) B) C) D) E) The Answer is : D
spiral ... radial
radial ... indeterminate
spiral ... indeterminate
spiral ... determinate
radial ... determinate
Q17.An animal with a true coelom that has __________ cleavage must be a(n) __________. ( Concept
32.3)
A) B) C) D) E) radial ... deuterostome
radial ... protostome
spiral ... deuterostome
spiral ... endostome
All of the listed responses are correct.
The Answer is : A
Q18.Which of the following is a trait shared by protostomes and deuterostomes? ( Concept 32.3)
A) B) C) D) E) they are diploblastic
a body cavity
spiral cleavage
the anus develops from the blastopore
indeterminate cleavage
The Answer is : B
Q19.Which of the following is characteristic of protostomes? ( Concept 32.3)
A) B) C) D) E) Ectoderm forms the muscles.
Mesoderm forms appendages.
The digestive tract is incomplete.
Cell fate is determined early during embryonic development.
The blastopore forms the anus.
The Answer is : D
Q20.Unlike other animals, sponges __________. ( Concept 32.4)
A) B) C) D) E) The Answer is : D
possess cell walls
lack a coelom
exhibit bilateral symmetry
lack true tissues
are unicellular
Q21.Which of the following is the defining characteristic of the clade Ecdysozoa for which this group is named? (
Concept 32.4)
A) B) C) D) E) a horseshoe-shaped crown of ciliated tentacles
the secretion of stiff external skeletons that must be shed to permit growth
lack of true tissues
segmented bodies
a trochophore larva
The Answer is : B
Q22.Among the characteristics unique to animals is
A) B) C) D) gastrulation.
multicellularity.
flagellated sperm.
sexual reproduction.
The Answer is : D
Q23.The distinction between sponges and other animal phyla is based mainly on the absence versus the
presence of :
A) B) C) D) true tissues.
a complete digestive tract.
a body cavity.
mesoderm.
The Answer is : A
Q24.Which of the following was probably the least important factor in bringing about the Cambrian explosion?
A) B) C) D) The Answer is : C
an increase in the concentration of atmospheric oxygen
the emergence of predator-prey relationships
the movement of animals onto land
the origin of Hox genes
Q25.Based on the tree in Figure 32.11, which statement is false?
A) B) C) D) The Answer is : D
Bilaterians form a clade.
Sponges are basal animals.
The animal kingdom is monophyletic.
Acoelomate flatworms are more closely related to echinoderms than to annelids.