Question 4
1 / 1 point
Roses and other flowering plants with net-veined leaves are examples of .
monocots
None of
... [Show More] these
gymnosperms
dicots
Question 5
2 / 2 points
water and minerals enter the root
leaf epidermal cells minimize water loss
water is lost from leaf openings
water is transported in the xylem
Question 6
1 / 1 point
Old World
coprolites
middens
New world
Question 7
1 / 1 point
true
false
Question 8
1 / 1 point
none of these
increase the stability
decrease the stabiltiy
change the location
Question 9
1 / 1 point
true
false
Question 10
1 / 1 point
use carrier proteins
allow water uptake in the root epidermal cells
always require energy from respiration
diffusion by osmosis
Question 11
1 / 1 point
radiant energy
chemical energy
mechanical energy
kinetic energy
Question 12
0 / 1 point
Two sperm combine with a polar nucleus to form endosperm.
One sperm combines with the polar nuclei to form the zygote, and one sperm combines with the egg to form endosperm.
One sperm combines with the egg to form the zygote, and one sperm combines with the polar nuclei to form endosperm.
Two sperm combine with two eggs to form the zygote and endosperm.
Question 13
1 / 1 point
Which of these developmental events happens first when a seed germinates?
The cotyledons disappear as their stored nutrition is used.
The cotyledons appear aboveground, turn green, and photosynthesize.
The hypocotyl elongates to lift cotyledons aboveground.
The root emerges from the seed to obtain water and nutrients from the soil.
Question 14
1 / 1 point
tRNA
rRNA
ribosome
mRNA
Question 2 / 2
15 points
that occur in a species throughout its evolutionary existence
that contribute to the next generation of a population
of an individual's genotype
present in a specific population
Question 16
1 / 1 point
Eastern United States
Peru
The Fertile Crescent (Mesopotamia)
Mexico
Question 17
2 / 2 points
thousands; cereals
thousands; cassava
hundreds, sweet corn
hundreds; soybean
Question 18
1 / 1 point
mycoplasma; mycoplasmacides
insects; insecticides
fungal; fungicides
weeds: herbicides
Question 19
2 / 2 points
Cola drinks are made with seeds from the kola tree (Cola nitida) found in West Africa.
true
false
Question 20
2 / 2 points
Tucson is in which USDA hardiness zone(s)
10 and 11
8 and 9
5 and 6
3 and 4
Question 21
2 / 2 points
precipitation
temperature
light
all of these
Question 22
2 / 2 points
temperate deciduous forest
tundra
these all receive about the same amount of precipitation
tropical
Question 23
0 / 1 point
Prokaryotic cells ...
have organized organelles and a membrane bound nucleus.
lack both membrane bound organelles and membrane bound nuclei.
may have a membrane bound nucleus but never organized membrane bound organelles.
never contain photosynthetic apparatus.
Question 24
1 / 1 point
Enzymes are described as catalysts, which means that they .
are proteins
can make an energy requiring reaction energy yielding
provide energy for the reactions they facilitate
increase the rate of a reaction without being consumed by the reaction
Question 25
2 / 2 points
garden pea
soybean
peanut
green bean
Question 26
1 / 1 point
In angiosperm the primary xylem cells are:
companion cells
vessel elements
trachea
seive tube members
Question 27
2 / 2 points
Photosynthesis and respiration have which of the following in common?
Both are energy requiring processes.
Both use NADPH to store high energy electrons.
Both require light
In eukaryotes, both processes reside in specialized organelles.
Question 28
1 / 1 point
What base pairing arrangement is typically found in double-stranded DNA?
G pairs with A; T pairs with C.
A pairs with U; G pairs with C.
There are no base-pairing rules.
A pairs with T; G pairs with C.
Question 29
2 / 2 points
Which of the following features characterize the legume plants?
they all belong to one single family, Fabaceae
the roots are associated with nitrogen-fixing bacteria
All of these are characteristic of legumes.
the seeds have two cotyledons
Question 30
2 / 2 points
life should be impossible
energy can neither be created nor destroyed
the quality of energy in the universe is constant
the quantity of usable energy declines with each energy transformation
Question 31
1 / 1 point
The study of pollen is called palynology.
False
True
Question 32
1 / 1 point
Which hormone is used commercially to ripen green fruit?
ethylene
brassinosteroid
auxin
gibberellin
Question 1 / 1
33 point
What is genetic recombination?
the new combination of maternal and paternal chromosome segments that result when homologs cross over
the combination of a prominent haploid phase and a prominent diploid phase in a life cycle
the new combinations of chromosome segments that result when outcrossing occurs
the new combination of maternal and paternal homologs that results when chromosome separate at meiosis I
Question 34
1 / 1 point
The process of crop domestication depends on natural selection.
False
True
Question 35
2 / 2 points
The cytoplasm contains
plasma membrane
organelles and cytosol
cell wall
protoplasts
Question 36
1 / 1 point
Which of the following statements about plant cells is most accurate?
Plant cells generally have more genes than animal cells
All of the above are true statements about plant cells.
Plant cells have between 20,000 and 40,000 genes per cell
Plant cells contain a full complement of organelles and cytoplasm and may undergo mutation during mitosis.
Question 37
1 / 1 point
Which of the following options best describes the phloem?
rigid, unliving, conducting tissue
Living tissue with seive tube members and companion cells.
Living tissue with tracheid cells
Dead cells with companion cells for carbohydrate transport
Question 38
1 / 1 point
ground
xylem
dermal
vascular
Question 39
1 / 1 point
Translocation is the process whereby water vapor is expelled from the leaf.
True
False
Question 40
2 / 2 points
The ultimate source of energy to support most life on Earth is .
cellular respiration
fossil fuels
hydroelectric
sunlight
Question 41
2 / 2 points
Keeping the seed hydrated before germination
Dispersing seed
Deterring predators
Attracting pollinators
Question 42
0 / 2 points
False
True
Question 43
2 / 2 points
After double fertilization in angiosperms, what development sequence is correct?
The ovule becomes the seed.
The entire carpel dries up and falls off the plant
The embryo in the seed develops into endosperm.
The ovary wall becomes the endosperm.
Question 44
2 / 2 points
willow trees
cocoa plants
asparagus plants
poppies
Question 45
2 / 2 points
true
false
Question 46
0 / 2 points
true
false
Question 47
2 / 2 points
Which of the following options below best describe Kingdom Protista?
single and multicellular, eukaryotic organisms
made up of prokaryotic cells
single cell organisms that lack ability to do photosynthesis.
None of these
Question 48
0 / 2 points
a niche
a population
an ecosystem
a community
Question 49
2 / 2 points
Grasslands generally .
are found in continent interiors
have less rain than the desert biome
are dominated by freezing temperatures
have much more rain than the chaparral biome
Question 50
1 / 1 point
Annual growth rings are the result of one year of secondary xylem
Question 51
True False
1 / 1 point
Eukaryotic cells
are found in all multicellular organisms in kingdom plantae, fungi and animalia.
lack DNA.
are only found in kingdom plantae.
are found in kingdom eubacteria.
Question 52
1 / 1 point
Erosion
reduces the top soil available for agricultural land
causes accumulation of salinity in agricultural land
increases when contour strip cropping is employed.
occurs as a result of natural processes only
Question 53
1 / 1 point
Stolons are
succulent stems modified for water storage
horizontal stems modified to facilitate plant distribution
underground storage roots
above ground stems thickened for storage
Question 54
1 / 1 point
Thorns are
modified leaves
specialized stem for carbohydrate storage
modified stems
arise from epidermal cells
Question 55
1 / 1 point
It decreases, because water exits and affects turgor pressure.
It increases, because water enters and affects turgor pressure.
It decreases, because sugar concentration directly affects turgor pressure.
There is no change; sugar concentration has no effect on turgor pressure.
Question 56
1 / 1 point
Cacti spines result from a modification of the same plant organ that produces
leaves
tubers
trichomes
rhizomes
Question 57
2 / 2 points
Which of the following members of the plant kingdom evolved more recently?
Angiosperms.
Gymnosperms.
Cycads.
Bryophytes.
Question 58
1 / 1 point
the synthesis reactions
the synthesis of ATP
the oxidation of glucose
the photo reactions
Question 59
1 / 1 point
What color in the absorption spectrum do chlorophyll a and b absorb least?
white
blue
red
green
Question 60
1 / 1 point
Their pollen is dispersed by wind.
Early spring birds are probably the pollinators.
Their insect pollinators are probably color blind.
Flower color or shape is not related to pollinators.
Question 61
2 / 2 points
endosperm nutrients are absorbed into the cotyledons
endosperm replaces cotyledons in the seed
same thing is true; there is a substantial amount of endosperm
endosperm never even starts to form after double fertilization
Question 1 / 1
62 point
800
1200
1800
400
Question 63
2 / 2 points
segregation and independent assortment
mutation and fertilization
crossing over and independent assortment of chromosomes
crossing over and allelic exclusion
Question 64
2 / 2 points
Mexico, 5,500
India; 5,500
Fertile Crescent, 17,000
China; 11,500
Question 65
1 / 1 point
Cassava is a minor crop of importance only to people in Asia.
False
True
Question 66
1 / 1 point
The centromere
are found in both living and non-living things
acts as a spindle to pull the replicated strands of DNA to either side of the cell during mitosis
is unrelated to chromosomes
joins the sister chromatids in the middle during the S phase of the cell cycle
Question 67
2 / 2 points
biotic…..abiotic
abiotic….biotic
Question 68
1 / 1 point
Pepper, from the berries of Piper nigrum, produces the chemical capsaicin.
false
true
Question 69
1 / 1 point
Which of the following is found in BOTH animal and plant cells?
Chloroplasts
Vacuoles
Mitochondria
Lysosomes
Question 70
0 / 1 point
In the cell cycle, both G1 and G2 phases
have growth occur
have DNA replication occur
occur during mitosis
onlly occur before the mitotic phase
Question 71
1 / 1 point
Which of the following is NOT one of the three steps that bring about plant cell growth?
Cell differentiation (specialization)
Meristem cell division (mitosis and cytokinesis
Meiosis
Cell elongation
Question 72
2 / 2 points
Bark is made of crushed secondary phloem and periderm
Question 73
True False
1 / 1 point
False
True
Question 74
1 / 1 point
Which of the following statements about energy is TRUE?
All molecules have the same energy content.
Energy is created when a molecule is oxidized.
ADP has more energy than ATP.
Living things require a constant supply of energy.
Question 75
1 / 1 point
The oxygen produced during photosynthesis is derived from .
carbon dioxide
water
glucose
ATP
Question 76
1 / 1 point
does not require oxygen
takes place in the presence of oxygen
prevents aerobic respiration
takes place in the photo reactions
Question 77
1 / 1 point
ATP and NADH to synthesize glucose
NADH to glucose
light to chemical energy in glucose
glucose to ATP
Question 78
0 / 2 points
the population
the individual genotype [Show Less]