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IB Plant Biology Flashcards | StudBud
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IB Plant Biology
IB Plant Biology
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Practice quiz
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Questions
44
Answers
1
Which structure will pollen stick to?
D
A
B
C
2
Which of the following is true about Auxin?
Auxin production moves away from gravity
Auxin production moves toward shade
Auxin production moves toward light
Auxin production in shoots inhibits growth
3
Transpiration is best defined as
loss of water vapor from the leaves
production of food in a plant
transport of sugars through the plant
osmosis of water into root hairs
4
What is structure B?
filament
style
anther
stigma
5
What part of a plant is shown here?
trunk
leaf
root
stem
6
High solute concentration in the roots is maintained by which process?
transpiration
active transport
evaporation
osmosis
7
A plant root is
negatively phototropic
negatively geotropic
stimulated only by water
positively phototropic
8
What is structure 7?
guard cell
xylem
stomata
phloem
9
What is structure F?
sink cell
sieve tube
sieve plate
source cell
10
Which of the following is an example of a source?
developing fruits
mature leaves
roots
developing seeds
11
Which part is the phloem?
A
D
B
C
12
The transport of organic solutes through the phloem of a plant is called
respiration
osmosis
translocation
transpiration
13
Plants transport organic compounds from
sinks to sources
sources to sinks
roots to shoots
xylem to phloem
14
Which is TRUE about long-day plants?
bloom only at night
PFR inhibits flowering
bloom in autumn
PFR promotes flowering
15
Which part is the meristem?
C
A
B
16
What is shown in the picture?
leaf cross section
cactus
plant root
plant shoot
17
Which structure is the shoot apical meristem?
D
A
B
C
18
Carbohydrates in the phloem are mainly in this form.
glucose
fructose
starch
sucrose
19
What is shown in this picture?
plant shoot
phloem tube
leaf cross section
plant root
20
What is structure C?
xylem
companion cell
sieve plates
phloem
21
What is the main trigger that stimulates a plant to flower?
length of night
moisture
temperature
length of day
22
What process allows the transport of water into the roots of plants?
osmosis
translocation
phloem loading
active transport
23
In the picture shown, where is the xylem?
D
B
C
A
24
What occurs at night?
equal amounts of red and far red light
PFR converts into PR
high levels of red light
PR converts into PFR
25
Pollinators and flowering plants have a relationship described as
mutualism
symbolism
competition
commensalism
26
As solute concentration increases, water potential ________________.
increases
decreases
remains the same
becomes zero
27
Water molecules are attracted to each other, which is called
hydrolysis
cohesion
adhesion
hydrophilic
28
Which structure is the cotyledon?
2
3
4
1
29
_____________________________ is the inevitable consequence of gas exchange in the leaf.
photosynthesis
respiration
transpiration
translocation
30
What is structure 2 in the diagram?
embryo shoot
embryo root
cotyledon
testa
31
Which is true about transpiration?
it is a passive process
it occurs in the phloem
It is an active process
it transports substances in various directions in the plant
32
Water from transpiration exits the plant through the
stomata
spongy
palisade
guard cells
33
What is the function of lignin in xylem?
active transports sugars
strength & support
moves water against its gradient
pulls water up from roots
34
Water potential is greatest at which location?
leaves
atmosphere
roots
trunk
35
The energy required for transpiration comes from
solar energy
glucose
high pressure in the xylem
ATP
36
Meristems at the ends or tips of shoots and roots are
apical
lateral
intermediate
differentiated
37
What part of the flower will develop into the fruit?
stigma
ovule
ovary
style
38
The movement of sugars from the source to the sieve tube cells of the phloem is called
transpiration
translocation
passive transport
phloem loading
39
What is structure C?
ground meristem
axillary bud
primordial leaf
meristem
40
What is the first step in seed germination?
cellular respiration
production of enzymes
intake of water
production of plant hormones
41
Areas of undifferentiated plant cells that are actively dividing are called
determinate
vascular
meristems
epidermal
42
Which of the following will DECREASE the rate of transpiration?
light
windy
high humidity
warmer temps
43
Which of the following matches with the term xerophytes?
increases transpiration rates
salty habitats
cactus
small scaly leaves
44
Which is NOT a characteristic of phloem?
companion cells
dead cells
transport food
transport in two directions
