Biology (Mader), 10th Edition

Chapter 25: Flowering Plants: Nutrition and Transport

Post-Test

1
Which of the following is an essential element in plants?
A)Nitrogen
B)Nickel
C)Aluminum
D)Lead
2
Nitrogen is an essential element because it is a component of _____.
A)proteins
B)DNA
C)chlorophyll
D)All of these
3
A soil with mostly _____ particles has large spaces and the water drains right through them.
A)silt
B)sand
C)clay
4
The final decomposition of organic remains in humus to inorganic nutrients is performed by _____.
A)protozoa
B)earthworms
C)small plants
D)All of these
5
Carbon dioxide and water are combined during photosynthesis to form _____.
A)carbohydrates
B)proteins
C)nucleic acids
D)lipids
6
Photosynthesis requires _____.
A)an abundant supply of water
B)open stomates
C)carbon dioxide
D)All of these
7
Root pressure may be responsible for _____ when drops of water are forced out of vein endings along the edges of the leaves.
A)transpiration
B)erosion
C)guttation
D)girdling
8
The mechanism for xylem transport of water is suggested by the _____ model.
A)cohesion-tension
B)endosymbiotic
C)fluid mosaic
D)pressure flow
9
Tracheids and vessel elements are the cells which comprise _____ which transports water and minerals.
A)parenchyma
B)xylem
C)phloem
D)cork cambium
10
Sieve tube elements are connected to one another by _____ to form a continuous pipeline for sugars.
A)gap junctions
B)adhesion junctions
C)plasmodesmata
D)lignin
11
An accumulation of _____ ions within guard cells causes the stomata to open.
A)calcium
B)fluorine
C)potassium
D)chlorine
12
Bacteria living in root nodules receive _____ from the plant.
A)nitrogen
B)carbohydrates
C)oxygen
D)All of these
13
Minerals are transported upwards from the roots in _____.
A)xylem
B)phloem
C)the casparian strip
14
Plants can get the nitrogen they need from _____.
A)nitrogen-fixing bacteria in their roots
B)the activity of soil bacteria
C)insects they trap and digest
D)All of these
15
The pressure-flow model is an explanation for the ______.
A)movement of organic materials in phloem
B)movement of H2O in xylem
C)movement of minerals in xylem
16
The _____ form a continuous pipeline from a source to a sink.
A)sieve tubes
B)vessel elements
C)tracheids
D)stomates
17
Which of these statements about phytoremediation is not true?
A)It occurs at a slow pace.
B)It can only be effective at reaching contaminants at the root level.
C)It is expensive and requires excessive energy to accomplish.
D)It can be used to help replenish oxygen in a water body.
18
Scientists have suggested the planting of ____________ may help reduce the levels of selenium.
A)canola
B)poplars
C)mustard plants
D)wheat
19
When sugar is actively transported into the phloem, _____.
A)active transport moves it toward the sink
B)it diffuses to areas of high concentration
C)water follows by osmosis
D)All of these
20
Which chemical property of water is important to the movement of xylem sap?
A)Hydrogen bonding between water molecules
B)Surface tension
C)The states of water
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