R
Redline rider
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1.What makes sclerenchyma cells tough and durable?
A.Their ability to change size
B.Their second cell wall hardened by lignin
C.Their cytoplasm and organelles
D.Their tendency to form long strands
2.How are parenchyma cells important in healing a plant’s wounds?
A.They can regenerate throughout the plant’s life.
B.They have very tough cell walls.
C.They are not needed for photosynthesis.
D.They allow growth despite their thick walls.
3.What is the function of the plasmodesmata?
A.They support and protect plants.
B.They allow cells to share materials.
C.They store starch, oils, and water.
D.They carry out photosynthesis.
4.Trees do not have a structure that pumps fluids like a heart. How do fluids move from the tree’s roots to its leaves without a pump?
A.The properties of water move fluids up trees.
B.Trees do not need to transport fluids.
C.Water is pushed when pressure is applied to the roots.
D.Hydrogen bonds are stronger in trees than in animals.
5.Figure 21.1 shows a root tip. What is the function of the cone of cells at the very tip of the
root?
A.To produce new growth by dividing
B.To protect the growing part of the root
C.To absorb water from the soil
D.To grow lateral meristems
6.What would happen if a plant's vascular system contained only xylem?
A.The vascular system would still function normally.
B.The vascular system would be made up mostly of photosynthesizing cells.
C.The vascular system would be unable to transport water and dissolved mineral nutrients.
D.The vascular system would be unable to transport the products of photosynthesis.
7.What is the function of phloem?
A.Transport water through a plant
B.Transport minerals through a plant
C.Prevent water loss through transpiratio
D.Transport products of photosynthesis
8.Primary growth increases a plant’s
A.flowers.
B.branches.
C.length.
D.thickness.
9.The function of guard cells is to
A.keep carbon dioxide out.
B.produce potassium ions.
C.carry out photosynthesis.
D.open and close the stomata.
10.Figure 21.2 shows a cross section through a tree. Different amounts of _________ account for the differences in thickness between bands
A.sunlight
B.growth
C.wind
D.sugar
11.The thin stalk that attaches a leaf to a stem is called a
A.blade.
B.cuticle.
C.bud.
D.petiole.
12.A single leaf can be identified by
A.the location of the axillary bud.
B.the number of blades.
C.the vein pattern.
D.the leaf margin.
13.What happens to the guard cells when a plant is losing water from transpiration faster than it is gaining water at its roots?
A.They deflate and open the stomata.
B.They inflate and open the stomata.
C.They deflate and close the stomata.
D.They inflate and close the stomata.
14.The function of gathering light is handled by which structure of the plant?
A.Stems
B.Leaves
C.Roots
D.None of the above
15.What problem would most plants face if they tried to grow in an aquatic environment?
A.Forming flowers
B.Exchanging gases
C.Getting nitrogen
D.Staying warm
16.Plant cells that have thin walls and store starch, oils, and water are
A.parenchyma cells.
B.collenchyma cells.
C.sclerenchyma cells.
D.vascular cells.
17.Water and dissolved minerals are carried from the roots to the rest of a plant by the
A.dermal tissue.
B.ground tissue.
C.xylem.
D.phloem.
18.The cohesion-tension theory proposes that water rises through plants because of
A.metabolic energy expended by the plant.
B.the physical properties of water.
C.pressure changes between sources and sinks.
D.transpiration from roots.
19.What does the pressure-flow model explain?
A.How pressure is kept the same throughout a plant
B.How water moves through a plant
C.How sugars are produced by photosynthesis
D.How sugars move through a plant
20.Where is the vascular cylinder of a root?
A.Covering the tip
B.Just behind the root cap
C.In the center of the root
D.Inside the meristem
21.Which of the following is NOT one of the basic forms of roots?
A.Fibrous roots
B.Meristems
C.Taproots
D.All of the above
22.A tree trunk shows five annual rings very close together followed by three thick annual rings. What does this tell you about the weather in those years?
A.Five years of harsh conditions followed by three years of good conditions
B.Five very cold winters followed by three short autums
C.Five years of high precipitation followed by a period of drought
D.Nothing, there is no connection between weather and growth rings
23.In what part of a leaf does most photosynthesis take place?
A.Epidermis
B.Mesophyll
C.Stomata
D.Guard cells
24.Thin leaves such as spines and needles are adaptations to
A.wet conditions.
B.dry climates.
C.warm winds.
D.fruit formation.
25.Predatory plants get their nitrogen from
A.the water they absorb.
B
A.Their ability to change size
B.Their second cell wall hardened by lignin
C.Their cytoplasm and organelles
D.Their tendency to form long strands
2.How are parenchyma cells important in healing a plant’s wounds?
A.They can regenerate throughout the plant’s life.
B.They have very tough cell walls.
C.They are not needed for photosynthesis.
D.They allow growth despite their thick walls.
3.What is the function of the plasmodesmata?
A.They support and protect plants.
B.They allow cells to share materials.
C.They store starch, oils, and water.
D.They carry out photosynthesis.
4.Trees do not have a structure that pumps fluids like a heart. How do fluids move from the tree’s roots to its leaves without a pump?
A.The properties of water move fluids up trees.
B.Trees do not need to transport fluids.
C.Water is pushed when pressure is applied to the roots.
D.Hydrogen bonds are stronger in trees than in animals.
5.Figure 21.1 shows a root tip. What is the function of the cone of cells at the very tip of the
root?
A.To produce new growth by dividing
B.To protect the growing part of the root
C.To absorb water from the soil
D.To grow lateral meristems
6.What would happen if a plant's vascular system contained only xylem?
A.The vascular system would still function normally.
B.The vascular system would be made up mostly of photosynthesizing cells.
C.The vascular system would be unable to transport water and dissolved mineral nutrients.
D.The vascular system would be unable to transport the products of photosynthesis.
7.What is the function of phloem?
A.Transport water through a plant
B.Transport minerals through a plant
C.Prevent water loss through transpiratio
D.Transport products of photosynthesis
8.Primary growth increases a plant’s
A.flowers.
B.branches.
C.length.
D.thickness.
9.The function of guard cells is to
A.keep carbon dioxide out.
B.produce potassium ions.
C.carry out photosynthesis.
D.open and close the stomata.
10.Figure 21.2 shows a cross section through a tree. Different amounts of _________ account for the differences in thickness between bands
A.sunlight
B.growth
C.wind
D.sugar
11.The thin stalk that attaches a leaf to a stem is called a
A.blade.
B.cuticle.
C.bud.
D.petiole.
12.A single leaf can be identified by
A.the location of the axillary bud.
B.the number of blades.
C.the vein pattern.
D.the leaf margin.
13.What happens to the guard cells when a plant is losing water from transpiration faster than it is gaining water at its roots?
A.They deflate and open the stomata.
B.They inflate and open the stomata.
C.They deflate and close the stomata.
D.They inflate and close the stomata.
14.The function of gathering light is handled by which structure of the plant?
A.Stems
B.Leaves
C.Roots
D.None of the above
15.What problem would most plants face if they tried to grow in an aquatic environment?
A.Forming flowers
B.Exchanging gases
C.Getting nitrogen
D.Staying warm
16.Plant cells that have thin walls and store starch, oils, and water are
A.parenchyma cells.
B.collenchyma cells.
C.sclerenchyma cells.
D.vascular cells.
17.Water and dissolved minerals are carried from the roots to the rest of a plant by the
A.dermal tissue.
B.ground tissue.
C.xylem.
D.phloem.
18.The cohesion-tension theory proposes that water rises through plants because of
A.metabolic energy expended by the plant.
B.the physical properties of water.
C.pressure changes between sources and sinks.
D.transpiration from roots.
19.What does the pressure-flow model explain?
A.How pressure is kept the same throughout a plant
B.How water moves through a plant
C.How sugars are produced by photosynthesis
D.How sugars move through a plant
20.Where is the vascular cylinder of a root?
A.Covering the tip
B.Just behind the root cap
C.In the center of the root
D.Inside the meristem
21.Which of the following is NOT one of the basic forms of roots?
A.Fibrous roots
B.Meristems
C.Taproots
D.All of the above
22.A tree trunk shows five annual rings very close together followed by three thick annual rings. What does this tell you about the weather in those years?
A.Five years of harsh conditions followed by three years of good conditions
B.Five very cold winters followed by three short autums
C.Five years of high precipitation followed by a period of drought
D.Nothing, there is no connection between weather and growth rings
23.In what part of a leaf does most photosynthesis take place?
A.Epidermis
B.Mesophyll
C.Stomata
D.Guard cells
24.Thin leaves such as spines and needles are adaptations to
A.wet conditions.
B.dry climates.
C.warm winds.
D.fruit formation.
25.Predatory plants get their nitrogen from
A.the water they absorb.
B