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IB Biology Plant Unit Flashcards | StudBud
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IB Biology Plant Unit
IB Biology Plant Unit
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Practice quiz
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Questions
53
Answers
1
What physical factors affect transpiration in plants?
pH, temperature and salinity
Temperature, humidity and wind
Light, pH and humidity
Humidity, temperature and salinity
2
The photo below shows the flowers of
Campanula persicfolia.
Label the structures I, II and III
I. sepal, II. ovary, III. petal
I. stigma, II. ovule, III. petal
I. anther, II. ovary, III. petal
3
Which letter identifies the pith?
A
D
C
F
4
What controls the opening/closing of the stomata for gas exchange?
Cuticle
Companion cells
Guard cells
Epidermis
5
The style is a female structure.
True
False
6
What is primary growth?
makes the plant wider/stouter
Growing up from the apex
7
Adhesion is the sticking together of particles of a different substance.
False
True
8
Is the anther male or female?
Male
Female
9
What is the transpiration pull?
Exhalation of water vapor through the stomata
Movement of organic molecules from the roots to leaves by capillary action
Movement of organic molecules from the leaves to the roots
Movement of water from roots to leaves by capillary action
10
What is the role of the xylem?
It carries glucose to the leaves
It absorbs minerals from the soil by active transport
It contributes to the plant support with lignified walls
It translocates amino acids from source to sink
11
How do mineral ions in the soil move into the root?
Translocation
Osmosis
Through the phloem
Mass flow of water
12
____________ is the process by which an organism grows from a seed or spore.
Translocation
Germination
Photosynthesis
Transpiration
13
Why do roots have root hairs?
For fun
Filtration of molecules
To increase surface area
14
Which of the following is true about monocots?
4 or 5 flower parts or multiples of 4 or 5
Taproot
Pollen grain with one opening
netlike venation pattern
15
Which is respiration?
C6H12O6 + 6O2 ----> 6CO2 + 6H2O.
6CO2 + 6H2O → C6H12O6 + 6O2
16
What structures are indicated by the letters X, Y, and Z?
A
D
C
B
17
Cohesion is the sticking together of particles of the same substance.
True
False
18
What is the movement in the phloem called?
Osmosis
Transpiration
Translocation
Active transport
19
Identify the xylem
D
F
A
B
20
What gasses diffuse in and out of the leaf when the stomata is open?
CO2 in; water vapor and oxygen out
Water vapor in; CO2 and oxygen out
CO2 and oxygen in; water vapor out
21
What is pollination?
seed dispersal
Male and female gametes join
Pollen grains grow a pollen tube down the style to the ovule
Transferring of pollen grains from the anther to the stigma
22
___________ is a continual growth pattern of undifferentiated cells in meristems?
Determinate growth
Primary growth
Intermediate growth
23
What is an example of xeromorphic adaptations?
all of the above
Deep spreading roots
Spikes instead of leaves
waxy leaves
24
Flowering in a long-day and short-day plant is controlled by?
The sun
Phytochrome
Pigments in the chlorophyll
Wavelengths
25
Which process is responsible for water uptake by the roots?
B
C
D
A
26
_________ fills cells with enough water to stabilize them
Translocation
Turgor pressure
Transpiration
27
What requirement is needed for a seed to germinate?
Oxygen
Sunlight
All of the above
Organic molecules
28
Which letter identifies phloem?
C
A
D
B
29
The two types of pollination is cross-pollination and self-pollination.
False
True
30
Plants absorb minerals from the soil though their root hair cells.
False
True
31
What number identifies the vascular bundle?
4
5
2
3
32
How do auxins cause plant shoots to grow towards light?
Increase cell elongation on the side of the stem away from the light
Increase cell division on the side of the stem away from the light
Increase cell elongation on the side of the stem near the light
Increase cell division on the side of the stem near the light
33
The xylem is towards the exterior of the stem and the phloem is closer to the interior of the stem.
False
True
34
What causes content in the phloem to flow towards sinks?
Translocation
Hydrostatic pressure
Osmosis
35
____________ indicate growth or turning movement of a plant in response to an environmental stimulus.
Phototropism
Auxin
Tropism
36
What is the flowering process controlled by?
Length of day
Length of night
37
What is transpiration?
The uptake of water through the roots
The loss of water vapor from leaves
The movement of sucrose and other substances like amino acids
The inevitable consequence of gas exchange in the leaf
38
Phototropism is plant growth in response to light.
True
False
39
What is the function of the plasmodesmata?
Increase surface area
Storage
Connect transfer cells to sieve-tube cells
Protection
40
What cells commit photosynthesis in a leaf?
Palisade mesophyll
Spongy mesophyll
Companion cells
Guard cells
41
Which letter identifies the cortex?
C
E
B
A
42
What is the function of the sepal?
Protect the seed
Storage
Protect the flower while preparing to bud
Attraction of pollinators
43
What is transported in xylem tissue?
Organic molecules from soil to roots
sucrose from leaves to fruits
Water from roots to leaves
starch from leaves to storage organs
44
What is the structure labeled Y and one of its functions?
B
D
A
C
45
Which process is indicated by the arrows?
B
C
D
A
46
The process of a pollen tube growing down to the ovary where fusion of male/female gametes happens in the ovule.
Photosynthesis
Fertilization
Seed dispersal
Pollination
47
What plant hormone causes elongation of cells in shoots and is involved in regulating plant growth?
Gibberellin
Cytokinin
Auxin
48
What is the male part of the flower?
Pistil
Stamen
Carpal
49
Phloem transports organic molecules from sinks to sources.
True
False
50
What part of the leave allows gas exchange?
Cuticle
Stomata
Spongy Mesophyll
Guard cells
51
What is transported in phloem tissue?
c. water
b. amino acids
a and b
a. sugar
52
Which of the following is NOT true about dicots?
Dicots vascular bundles are arranged throughout the stem
Dicots have netlike veins
Dicots have a pollen grain with 3 openings
Dicots have a taproot
53
Only the loading and removal of sugar from the sieve tube members requires energy in phloem transport.
False
True
