1
Nonvascular plants lack _____, specialized cells that help support the plant as well as transport water and nutrients upward from their roots.
phloem
trumpet hyphae
xylem
arteries

Question 2
Flowering plants became important parts of the world's terrestrial ecosystems during the:
Paleozoic Era
Cenozoic Era
Mesozoic Era
Precambrian

Question 3
The largest mass extinction of the Paleozoic Era was:
at the end of the Cretaceous Period
at the end of the Permian Period
at the middle of the Jurassic Period
extinctions never happened.

Question 4
Ichthyosaurs went extinct at the end of the:
Triassic Period
Permian Period
Jurassic Period
Cretaceous Period

Question 5
Sauropod dinosaurs included all of these except:
Apatosaurus
Diplodocus
Allosaurus
Brachiosaurus.

Question 6
Autotrophic organisms obtain their food:
from another creature
by photosynthesis
by chemical synthesis
b or c

Question 7
Bacteria lack which of these structures?
nucleus
mitochondria
ribosomes
both a and b

Question 8
Which of these is a type of prokaryotic cell?
bacterium
methanogen
sperm
a and b

Question 9
Birds first appeared and rose to prominence during the:
Precambrian
Paleozoic Era
Mesozoic Era
Cenozoic Era

Question 10
Which of these was NOT a period of the Mesozoic?
Triassic
Jurassic
Cretaceous
Quaternary

Question 11
The first mammals evolved during the _____ Period.
Quaternary
Cambrian
Permian
Triassic

Question 12
The mammal trait of having fur is an example of a derived character because this trait
is shared by all mammals and also is present in a common ancestor
is an example of slow change over time
is found among mammals but not in the common ancestor of mammals
is shared among all vertebrates

Question 13
Linnaeus' smallest category in his classification system was the:
domain
species
kingdom
phylum

Question 14
Animal cells lack:
cell membranes
cell walls
nucleus
ribosomes

Question 15
Which of these is NOT characteristic of chordates?
a dorsal supporting rod
a dorsal hollow nerve cord
pharyngeal pouches
chloroplasts in their cells

Question 16
Vascular plants have _____, specialized cells that transport food such as dissolved sugars.
phloem
trumpet hyphae
xylem
arteries

Question 17
The _____ generation of a tulip is the dominant phase of its life cycle.
sporophyte
adult
embryo
gametophyte

Question 18
When we see a mushroom for sale at the store, we are seeing the _____ of the fungus.
vegetative mycelia
asexual reproductive structure
sexual reproductive structure
lichen

Question 19
Entamoeba hystolitica is a protist that causes which of these diseases?
Montezuma's revenge
syphilis
giardiasis
valley fever

Question 20
Auxins regulate or influence which of the following?
apical dominance
stem elongation
phototropic response
all of these

Question 21
_____ are bacteria that grow in association with a root and “fix” atmospheric nitrogen.
Rhizobia
Root hairs
Root nodules
Mycorrhizae

Question 22
Which of these is a part of a flower?
ovary
petal
stamen
all of these are flower parts

Question 23
Which of these is NOT an organ of a plant?
root cap
petiole
flower
seed

Question 24
Which of these cell types lines body surfaces?
squamous epithelium
cartilage
blood
cuboidal epithelium

Question 25
Hormones act on organs and tissues in which of these body systems?
Endocrine
Circulatory
Reproductive
all of these

Question 26
Cardiac muscle fibers function to:
support the body
make bones move
release heat to maintain body temperature
contract the heart

Question 27
An axon conducts nerve impulses _____ the cell body.
away from
toward
both toward and away from
only inside

Question 28
The _____ are the female sex hormones.
androgens
estrogens
aldosterones
insulins

Question 29
The exchange of oxygen and carbon dioxide between blood capillaries and body cells is governed by:
gravity
blood pressure
diffusion
active transport

Question 30
The urinary system consists of all of these EXCEPT:
kidneys
large intestine
ureters
urinary bladder

Question 31
Antibodies are:
produced by the B cells
antigen-specific
proteins