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IB Biology - Unit 9 Plant Biology HL Flashcards | StudBud
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IB Biology - Unit 9 Plant Biology HL
IB Biology - Unit 9 Plant Biology HL
25 terms
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#IB #Biology #HL #Plants #Transpiration
Flashcards
25 cards
F
Practice quiz
P
Host live
L
Questions
25
Answers
1
Which process is indicated by the arrows?
D
C
A
B
2
What structures are indicated by the letters X, Y and Z?
C
B
D
A
3
See picture:
C
D
B
A
4
How do most angiospermophyta improve sexual reproductive success?
By flowering during short days
By flowering during long days
By using mutualistic pollinators
By using micropropagation
5
See picture:
Cell differentiation
Transcription
Translocation
Cell elongation
6
Which process happens first during germination of a starchy seed?
Conversion of starch into monosaccharides
Formation of gibberellin
Absorption of water
Production of amylase
7
See picture:
I, II and III
I and II only
II and III only
I and III only
8
What is/are the effect(s) of auxin in plants?
I, II and III
II and III only
I only
I and II only
9
Which plant embryo was
unable
to grow?
B
D
C
A
10
How do auxins cause plant shoots to grow towards light?
D
A
B
C
11
What is transported in xylem tissue?
Sucrose from leaves to fruits
Water from roots to leaves
Starch from leaves to storage organs
Salts from soil to roots
12
Which letter identifies phloem?
B
A
C
D
13
What steps occur in germination after water uptake?
B
A
D
C
14
What is a role of xylem?
It contributes to the plant support with lignified walls.
It absorbs minerals from the soil by active transport.
It translocates amino acids from source to sink.
It carries glucose to the leaves.
15
How do mineral ions in the soil move into the root?
Osmosis
Mass flow of water
Translocation
Through phloem
16
Under which conditions would the rate of transpiration be greatest?
Humid and cool with no wind
Dry and hot with wind
Dry and hot with no wind
Humid and cool with wind
17
What allows most plants to continue producing more roots leaves or stems throughout their life?
Auxin
Cellulose
Meristems
Phloem
18
Which flower structures are indicated by the letters Y and Z?
D
C
A
B
19
See picture:
Absorption of water with a higher solute concentration
Decreases movement of water from soil into the root
Increases movement of water from soil into the root
Absorption of water with a lower solute concentration
20
Which process is matched with a valid example?
D
B
A
C
21
Diagram shows cross section of a stem. What is the structure labelled Y & one of its functions?
C
A
D
B
22
Which is the most efficient way for some desert plants to conserve water?
B
A
C
D
23
Which abiotic factors affect transpiration in plants?
humidity, temperature and salinity
pH, temperature and salinity
temperature, humidity and wind
light, pH and humidity
24
Which process and cause are responsible for water uptake by the roots?
B
C
D
A
25
See picture:
C
A
D
B
