front 1 The last common ancestor of all animals was probably a | back 1 E) |
front 2 Which of the following genetic processes may be most helpful in
accounting for the Cambrian explosion? | back 2 D) |
front 3 What is the probable sequence in which the following clades of
animals originated, from earliest to most recent? | back 3 B) |
front 4 Soon after the coelom begins to form, a researcher injects a dye into
the coelom of a deuterostome embryo. Initially, the dye should be able
to flow directly into the | back 4 C) |
front 5 At which developmental stage should one be able to first distinguish
a diploblastic embryo from a triploblastic embryo? | back 5 B) |
front 6 What distinguishes a coelomate animal from a pseudocoelomate animal
is that coelomates | back 6 C) |
front 7 The blastopore is a structure that first becomes evident during
| back 7 B) |
front 8 The most ancient branch point in animal phylogeny is that between
having | back 8 D) |
front 9 A sponge's structural materials (spicules, spongin) are manufactured
by the | back 9 D) |
front 10 The members of which clade in the phylum Cnidaria occur only as
polyps? | back 10 C) |
front 11 What would be the most effective method of reducing the incidence of
blood flukes in a human population? | back 11 B) |
front 12 While sampling marine plankton in a lab, a student encounters large
numbers of fertilized eggs. The student rears some of the eggs in the
laboratory for further study and finds that the blastopore becomes the
mouth. The embryo develops into a trochophore larva and eventually has
a true coelom. These eggs probably belonged to a(n) | back 12 C) |
front 13 Nematode worms and annelid worms share which of the following
features? | back 13 A) |
front 14 Among the invertebrate phyla, phylum Arthropoda is unique in
possessing members that have | back 14 D) |
front 15 What distinguishes complete metamorphosis from incomplete
metamorphosis in insects? | back 15 C) |
front 16 1) Chordate pharyngeal slits appear to have functioned first as
| back 16 B) |
front 17 Which extant chordates are postulated to be most like the earliest
chordates in appearance? | back 17 A) |
front 18 Lampreys differ from hagfishes in | back 18 E) |
front 19 The earliest known mineralized structures in vertebrates are
associated with which function? | back 19 B) |
front 20 Which group's members have had both lungs and gills during their
adult lives? | back 20 B) |
front 21 Why is the amniotic egg considered an important evolutionary
breakthrough? | back 21 B) |
front 22 Which of the following are the only extant animals that descended
directly from dinosaurs? | back 22 D) |
front 23 In which vertebrates is fertilization exclusively internal? | back 23 D) |
front 24 Arrange the following taxonomic terms from most inclusive (most
general) to least inclusive (most specific). | back 24 B) |
front 25 Which of the following are considered hominoids? | back 25 D) |
front 26 Which of the following is the most inclusive (most general) group,
all of whose members have fully opposable thumbs? | back 26 C) |
front 27 Which structure is incorrectly paired with its tissue system?
| back 27 D) |
front 28 Which part of a plant absorbs most of the water and minerals taken up
from the soil? | back 28 B) |
front 29 ascular plant tissue includes all of the following cell types except
| back 29 E) |
front 30 Which cells are no longer capable of carrying out the process of DNA
transcription? | back 30 A) |
front 31 CO₂ enters the inner spaces of the leaf through the | back 31 C) |
front 32 Which of the following cells transport sugars over long distances?
| back 32 E) |
front 33 The vascular bundle in the shape of a single central cylinder in a
root is called the | back 33 B) |
front 34 A student examining leaf cross sections under a microscope finds many
loosely packed cells with relatively thin cell walls. The cells have
numerous chloroplasts. What type of cells are they? | back 34 A) |
front 35 Plants contain meristems whose major function is to | back 35 D) |
front 36 Which of the following root tissues gives rise to lateral roots?
| back 36 E) |
front 37 Which of the following is a true statement about growth in plants?
| back 37 B) |
front 38 According to the ABC model of floral development, which genes would
be expressed in a showy ornamental flower with multiple sepals and
petals but no stamens or carpels? | back 38 D) |
front 39 The polarity of a plant is established when | back 39 A) |
front 40 All of the following have an effect on water potential (Ψ) in plants
except | back 40 E) |
front 41 Which of the following statements about xylem is incorrect? | back 41 C) |
front 42 Root hairs are most important to a plant because they | back 42 C) |
front 43 A water molecule could move all the way through a plant from soil to
root to leaf to air and pass through a living cell only once. This
living cell would be a part of which structure? | back 43 D) |
front 44 Which of the following is responsible for the cohesion of water
molecules? | back 44 C) |
front 45 The opening of stomata is thought to involve | back 45 A) |
front 46 Which of the following is a correct statement about sugar movement in
phloem? | back 46 B) |
front 47 Water flows into the source end of a sieve tube because | back 47 B) |
front 48 For this pair of items, choose the option that best describes their
relationship. A) Item (A) is greater than item (B).
| back 48 B) |
front 49 Most of the water taken up by a plant is | back 49 C) |
front 50 Which of the following is not true of micronutrients in plants?
| back 50 D) |
front 51 Nitrogen fixation is a process that | back 51 D) |
front 52 Carnivorous plants have evolved mechanisms that trap and digest small
animals. The products of this digestion are used to supplement the
plant's supply of | back 52 D) |
front 53 Which of the following differentiates T cells and B cells? | back 53 C) |
front 54 At which developmental stage should one be able to first distinguish
a protostome embryo from a deuterostome embryo? | back 54 B) |
front 55 Organisms showing radial symmetry would likely | back 55 C) |
front 56 Which of the following organisms are deuterostomes? | back 56 E) |
front 57 What are the cells in a sponge that are primarily responsible for
trapping food particles from circulating water? | back 57 B) |
front 58 Which of the following statements about tapeworm feeding methods is
correct? | back 58 E) |
front 59 Protostomes that have an open circulatory system and an exoskeleton
of chitin | back 59 D) |
front 60 What is a characteristic that separates chordates from all other animals? A) segmentation | back 60 C) |
front 61 According to one hypothesis, the jaws of vertebrates were derived by
the modification of | back 61 B) |
front 62 Which of these is not considered an amniote? | back 62 A) |
front 63 Why is the amniotic egg considered an important evolutionary
breakthrough? | back 63 B) |
front 64 Differentiation of teeth is observed in A) sharks B) bony fishes C) amphibians D) reptiles E) mammals | back 64 E) |
front 65 three major groups: egg-laying, pouched, and placental A) amphibians | back 65 D) |
front 66 May have lungs, or gills, and may use skin as a respiratory surface
| back 66 A) |
front 67 For this pair of items, choose the option that best describes their
relationship. A) Item (A) is larger than item (B). | back 67 B) |
front 68 Location of the ovary: A) stamen B) carpel C) petals D) sepals E) receptacle | back 68 B) |