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IB Biology Plant Science Review Flashcards | StudBud
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IB Biology Plant Science Review
IB Biology Plant Science Review
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A quiz to review plant science
Flashcards
46 cards
F
Practice quiz
P
Host live
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Questions
46
Answers
1
In flowering plants, which helps seed dispersal?
Germination
Pollen
Bees
Mammals
2
What gas do plants absorb through their stomata to do photosynthesis?
Oxygen
Carbon dioxide
3
What does amylase control?
Digestion of starch to maltose
Digestion of maltose to glucose
Production of starch from glucose
Production of glucose from carbon dioxide
4
What structure is indicated by the letter X?
Stigma
Anther
Ovary
Style
5
What type of vascular tissue is used to transport water upward through the stem?
Meristems
Phloem
Ground tissue
Xylem
6
Which number represents the epidermis?
2
3
5
4
7
Where do auxins accumulate in the stem when a light shines on one side of the plant?
On the shaded side of the plant stem
On the light side of the plant stem
In the shoot tip
8
True or false?
Most plants can only do photosynthesis when their stomata are open.
False
True
9
Where are auxins produced?
In the middle of the stem.
In the shoot tip
In the plant's leaves
In the lateral root branches
10
A plant stem is shown. What type of vascular tissue is represented by the letter X?
Phloem
Xylem
11
What openings enables gases to be exchanged through the leaves of plants?
Plasmodesmata
Stomata
Vacuoles
Guard cells
12
What causes movement of water through the xylem?
Evaporation of water from leaves
Gravity
Active transport in the root tissue
Active translocation
13
Where do auxins cause H
+
ions to accumulate?
In the cytoplasm
In the cell wall space
In the plasma membrane
In the chloroplast
14
True or false?
Phloem sieve tube cells contain a nucleus.
False
True
15
What does a pollen tube aid?
Seed formation
Seed dispersal
Pollination
Fertilization
16
Which process starts the germination of a starchy seed?
Absorption of water
Maltose is converted to glucose
Production of amylase
Production of gibberellin
17
Which number represents the spongy mesophyll?
4
5
2
3
18
What gas is absorbed by germinating seeds?
Carbon dioxide
Oxygen
19
True or false?
Auxins change gene expression patterns.
True
False
20
After water absorption, gibberellin is produced. What enzyme is synthesized as a result?
Trypsin
Pepsin
Amylase
Lipase
21
How does increasing humidity affect the rate of transpiration?
As humidity increases, transpiration increases at a constant rate.
As humidity increases, transpiration decreases.
Humidity does not affect transpiration.
As humidity decreases, transpiration decreases until a point
22
What type of transport enables roots to absorb water?
Cotransport
Simple diffusion
Osmosis
Facilitated diffusion
23
How do auxins affect cross-links in the cellulose?
The cross-links are strengthened
The cross-links are loosened
24
What substance is identified by the letter "X"?
Sieve plates
Cell walls
Companion cells
Lignin
25
How do auxins affect the pH of the cell wall?
The pH becomes more acidic (lower)
The pH becomes more basic (higher)
26
What is the equation for calculating magnification of an image?
Total Power x Actual Size = Magnification
Image Size x Actual Size = Magnification
\frac{ActualSize}{TotalPower}=Magnification
\frac{ImageSize}{ActualSize}=Magnification
27
Which type of vascular tissue transports sugars throughout a plant?
Xylem
Phloem
28
A plant stem is shown. What type of vascular tissue is identified by the letter X?
Phloem
Xylem
29
Where are gametes produced?
Anthers and ovules
Anthers and stigma
Style and ovary
Filaments and stigma
30
Which of the following characteristics helps xylem withstand low air pressures?
Lignin and thick layers of cellulose
Many chloroplasts
Thin layers of cellulose
Large central vacuoles
31
Which choice best describes the movement of sugars through plasmodesmata near a source (like a mature leaf)?
Sugars move from the companion cells to the sieve tube cells.
Sugars move from the sieve tube cells to the companion cells.
32
In what sequence do the following processes occur?
Pollination → fertilization → seed dispersal
Fertilization → pollination → seed dispersal
Seed dispersal → fertilization → pollination
Seed dispersal → pollination → fertilization
33
What conditions will cause the highest rate of transpiration in a well-watered plant?
Low humidity, hot, bright sunshine and windy
Windy, bright sunshine, humid and cool
Windy, hot, cloudy and humid
Hot, humid with bright sunshine and still air
34
What type of transport is used to absorb mineral ions from the soil into the roots?
Ligand-gated ion channels
Simple diffusion
Osmosis
Active transport
35
True or false?
Phloem sieve tube cells are connected by porous sieve end plants that allow transport of sap.
True
False
36
How do auxins affect cells in the stem of plants?
It causes cell elongation
It inhibits cell elongation
It causes cell division
It encourages lateral growth
37
What structure is indicated by the letter X?
Anther
Ovary
Style
Stigma
38
How is the potometer used to measure the rate of transpiration?
The reservoir of water is measured to show total volume.
The size of the leaf area is measured to show growth.
The air bubble moves through the tube as water evaporates.
The scale is used to take the mass of the potometer.
39
A root is shown. Which number identifies the phloem?
2
4
3
5
40
What type of feedback loop controls fruit ripening?
Negative
Positive
41
Which process is directly assisted by flowering?
Seed dispersal
Germination
Fertilization
Pollination
42
Why does increased light intensity increase the rate of transpiration?
It causes water molecules to move more quickly
It increases photosynthesis, and causes stomata to open
It causes guard cells to close
It lowers the concentration gradient between air and leaves
43
What hormone controls fruit ripening?
Ethylene
Cytokinin
Auxin
Gibberellin
44
How many micrometers (μm) are in one millimeter (mm)?
10
100
1000
10000
45
What structure is indicated by the letter X?
Ovary
Ovule
Stigma
Anther
46
A root is shown. Which number identifies the xylem?
4
5
2
3
