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Biology 2 Chapter 35

front 1

1) Which part of a plant absorbs most of the water and minerals taken up from the soil?
A) root cap
B) root hairs
C) the thick parts of the roots near the base of the stem
D) storage roots

back 1

B

front 2

2) What is the primary function of stems?
A) Facilitation of gas exchange
B) Water absorption and movement
C) Maximization of photosynthesis by leaves
D) Reproduction

back 2

C

front 3

3) When you eat Brussels sprouts, you are eating _____.
A) immature flowers
B) large axillary buds
C) petioles
D) storage leaves

back 3

B

front 4

4) Some of the largest leaves in the world can be found on plants near the forest floor of dense tropical rain forests. Which of the following precursors for photosynthesis is most likely limited in these large leaves?

A) oxygen
B) carbon dioxide
C) glucose
D) light

back 4

D

front 5

5) Leaf thickness represents a trade-off between _____.
A) light collection and carbon dioxide absorption
B) water retention and carbon dioxide absorption
C) water retention and oxygen absorption
D) light collection and oxygen absorption

back 5

B

front 6

6) One important difference between the anatomy of roots and the anatomy of leaves is that _____.
A) only leaves have phloem and only roots have xylem
B) root cells have cell walls and leaf cells do not
C) a waxy cuticle covers leaves but is absent from roots
D) vascular tissue is found in roots but is absent from leaves
E) leaves have epidermal tissue but roots do not

back 6

C

front 7

7) Which of the following was a challenge to the survival of the first land plants?
A) too much sunlight
B) a shortage of carbon dioxide
C) desiccation
D) animal predation

back 7

C

front 8

8) Trichomes _____.
A) absorb sunlight, increasing the temperature of leaves
B) open and close for gas exchange
C) repel or trap insects
D) increase water loss from leaves

back 8

C

front 9

9) Which structure is correctly paired with its tissue system?
A) root hair — vascular tissue
B) guard cell — vascular tissue
C) companion cell — ground tissue
D) tracheid — vascular tissue

back 9

D

front 10

10) The main source of water necessary for photosynthesis to occur in the leaf mesophyll is _____.
A) soil via the xylem
B) soil via the phloem
C) the atmosphere through the cuticle and stomata
D) all of the listed responses

back 10

A

front 11

11) The vascular bundle in the shape of a single central cylinder in a root is called the _____.
A) cortex
B) stele
C) periderm
D) pith

back 11

B

front 12

12) Which of the following cell types retains the ability to undergo cell division?
A) a parenchyma cell near the root tip
B) a functional sieve tube element
C) a tracheid
D) a stem fiber

back 12

A

front 13

13) Which of these is NOT an example of a parenchyma cell?
A) cells that can form clones in tissue culture of plants
B) support cells near the outside of nonwoody stems
C) edible cells in fruits and vegetables
D) tissue in leaves that photosynthesizes

back 13

B

front 14

14) Which of the following have unevenly thickened primary walls that support young, growing parts of the plant?
A) parenchyma cells
B) collenchyma cells
C) sclerenchyma cells
D) tracheids and vessel elements

back 14

B

front 15

15) Which of the following is correctly paired with its structure and function?
A) sclerenchyma — supporting cells with thick secondary walls
B) ground meristem — protective coat of woody stems and roots
C) guard cells — waterproof ring of cells surrounding the central stele in roots
D) periderm — parenchyma cells functioning in photosynthesis in leavesA

back 15

A

front 16

16) Which of the following occurs in vascular land plants but not charophytes (stoneworts)?
A) sporopollenin
B) lignin
C) chlorophyll a
D) cellulose

back 16

B

front 17

17) Which of the following are water-conducting cells that are dead at functional maturity?
A) parenchyma cells
B) collenchyma cells
C) tracheids and vessel elements
D) sieve-tube elements

back 17

C

front 18

18) Which of the following cells transport sugars over long distances?
A) parenchyma cells
B) sclerenchyma cells
C) tracheids and vessel elements
D) sieve-tube elements

back 18

D

front 19

19) Plant meristematic cells _____.
A) are distributed evenly in all tissues throughout the plant
B) are undifferentiated cells that produce new cells
C) increase the surface area of dermal tissue by developing root hairs
D) subdivide into three distinct cell types named parenchyma, ground meristem, and procambium

back 19

B

front 20

20) Which of the following arise, directly or indirectly, from meristematic activity?
A) secondary xylem
B) leaves
C) dermal tissue
D) secondary xylem, leaves, dermal tissue, and tubers

back 20

D

front 21

21) Compared to most animals, the growth of most plant structure is best described as _____.
A) perennial
B) weedy
C) indeterminate
D) primary

back 21

C

front 22

22) What is present in a shoot apical meristem region?
I) the region of cell division
II) immature buds and leaves
III) cells that will give rise to the protoderm, ground meristem, and procambium
A) only I
B) only II
C) only III
D) I, II, and III

back 22

D

front 23

23) Shoot elongation in a growing bud is due primarily to _____.
A) cell division at the shoot apical meristem
B) cell elongation directly below the shoot apical meristem
C) cell elongation localized in each internode
D) cell division at the shoot apical meristem and cell elongation directly below the shoot apical meristem

back 23

C

front 24

24) Apical meristems of dicots are at the tips of stems. Apical meristems of grasses are at ground level or slightly below, concealed by the leaves. The leaves also have an intercalary meristem at their bases. What does this mean when considering care of a lawn or soccer field?
A) If you mow right at ground level, the leaves can keep growing with no problem.
B) Grass mowed two inches above ground level grows at a slower rate compared to grass mowed three inches above the ground level.
C) If you mow two inches above ground level, most apical meristems will be cut down.
D) If you mow two inches above ground level, both the apical and intercalary meristems can keep producing new cells.

back 24

D

front 25

25) In a meristematic region, the cell plate during mitosis is perpendicular to the side of the stem. In what direction will the stem grow?
A) laterally in width
B) vertically in height
C) at a 45-degree angle from the ground
D) away from the sun

back 25

B

front 26

26) Which of the following cells or tissues arise from lateral meristem activity?
A) secondary xylem
B) leaves
C) trichomes
D) tubers

back 26

A

front 27

27) Cells produced by lateral meristems are known as _____.
A) dermal and ground tissue
B) lateral tissues
C) pith
D) secondary tissues

back 27

D

front 28

28) Which of the following can be used to determine a twig's age?
A) Number of apical bud scar rings
B) Number of leaf scars
C) Number and arrangement of axillary buds
D) Length of internodes

back 28

A

front 29

29) A plant that grows one year, dies back, and then grows again the following year, produces flowers and then dies would be considered _____.
A) annual
B) biennial
C) perennial
D) not very fit

back 29

A

front 30

30) Which of the following is the correct sequence of the zones in the primary growth of a root, moving from the root cap inward?
A) zone of cell division, zone of elongation, zone of differentiation
B) zone of differentiation, zone of elongation, zone of cell division
C) zone of elongation, zone of cell division, zone of differentiation
D) zone of cell division, zone of differentiation, zone of elongation

back 30

A

front 31

31) The driving force that pushes the root tip through the soil is primarily _____.
A) continuous cell division in the root cap at the tip of the root
B) continuous cell division just behind the root cap in the center of the apical meristem
C) elongation of cells behind the root apical meristem
D) continuous cell division of root cap cells

back 31

C

front 32

32) Mitotic activity by the apical meristem of a root makes which of the following more possible?
A) increased delivery of water to the aboveground stem
B) decreased absorption of mineral nutrients
C) increased absorption of carbon dioxide.
D) effective lateral growth of the stem

back 32

A

front 33

33) Which of the following root tissues gives rise to lateral roots?
A) endodermis
B) phloem
C) epidermis
D) pericycle

back 33

D

front 34

34) As a youngster, you drive a nail in the trunk of a young tree that is 3 meters tall. The nail is about 1.5 meters from the ground. Fifteen years later, you return and discover that the tree has grown to a height of 30 meters. About how many meters above the ground is the nail?
A) 0.5
B) 1.5
C) 3.0
D) 15.0

back 34

B

front 35

35) You find a plant unfamiliar to you and observe that it has vascular bundles scattered throughout the stem cross section. What do you conclude about the plant?
A) It is probably an herbaceous eudicot.
B) It will probably get annual rings of wood.
C) It is probably a monocot.
D) It could be either a young eudicot or a monocot.

back 35

C

front 36

36) Monocot vascular bundles do not have a vascular cambium between the xylem and phloem. This means that monocots _____.
A) are much less efficient at conducting water and sugars
B) have very thin stems
C) do not produce wood in annual rings
D) cannot produce lateral shoots

back 36

C

front 37

40) Canada thistle is a dicot that spreads via growth from lateral roots. You want to use a root miner insect for weed control. What would you need to observe in the underground growth to verify that this weed spreads via lateral roots and not by underground stems?
A) an epidermis at the periphery
B) vascular bundles in a ring around the outside of a cross section
C) a vascular bundle in the center surrounded by parenchyma tissue
D) meristematic tissue at the tips of the branches

back 37

C

front 38

41) A student examining leaf cross sections under a microscope finds many loosely packed cells with relatively thin cell walls. The cells have numerous chloroplasts. What type of cells are they?
A) parenchyma
B) endodermis
C) collenchyma
D) sclerenchyma

back 38

A

front 39

42) The veins of leaves are _____.
I) composed of xylem and phloem
II) continuous with vascular bundles in the stem and roots
III) finely branched to be in close contact with photosynthesizing cells
A) only I
B) only II
C) only III
D) I, II, and III

back 39

D

front 40

45) Increasing the number of stomata per unit surface area of a leaf when atmospheric carbon dioxide levels decline is most analogous to a human _____.
A) breathing faster as atmospheric carbon dioxide levels increase
B) putting more red blood cells into circulation when atmospheric oxygen levels decline
C) removing red blood cells from circulation when atmospheric oxygen levels increase
D) increasing the volume of its lungs when atmospheric carbon dioxide levels increase

back 40

B

front 41

46) Where is primary growth occurring in an old tree?
A) Nowhere; trees more than a year old have only secondary growth.
B) closest to ground level at the base of the tree
C) in young branches where leaves are forming
D) where the vascular cambium and cork cambium are located

back 41

C

front 42

47) What tissue makes up most of the wood of a tree?
A) primary xylem
B) secondary xylem
C) secondary phloem
D) vascular cambium

back 42

B

front 43

48) A plant has the following characteristics: a taproot system, several growth rings evident in a cross section of the stem, and a layer of bark around the outside. Which of the following best describes the plant?
A) herbaceous eudicot
B) woody eudicot
C) woody monocot
D) herbaceous monocot

back 43

B

front 44

49) If you were able to walk into an opening cut into the center of a large redwood tree, when you exited from the middle of the trunk (stem) outward, you would cross, in order, _____.
A) the annual rings, new xylem, vascular cambium, phloem, and bark
B) the secondary xylem, cork cambium, phloem, and periderm
C) the vascular cambium, oldest xylem, and newest xylem
D) the secondary xylem, secondary phloem, and vascular cambium

back 44

A

front 45

50) Heartwood and sapwood consist of _____.
A) periderm
B) secondary xylem
C) secondary phloem
D) cork

back 45

B

front 46

51) Two examples of lateral meristems in plants are _____.
A) vascular cambium, producing cork; cork cambium, producing secondary phloem
B) vascular cambium, producing secondary xylem; cork cambium, producing secondary phloem
C) vascular cambium, producing secondary xylem; cork cambium, producing cork
D) vascular cambium, producing secondary phloem; cork cambium, producing secondary xylem

back 46

C

front 47

52) Additional vascular tissue produced as secondary growth in a root originates from which cells?
A) vascular cambium
B) apical meristem
C) endodermis
D) xylem

back 47

A

front 48

53) Girdling is a procedure to kill unwanted tress by cutting a groove into the bark of the tree. The groove must completely encircle the trunk and should penetrate into the wood to a depth of at least -inch on small trees, and 1- inches on larger trees. Why does this procedure cause tree death?
A) No water can be transported from the roots to the leaves.
B) No water can be transported from the leaves to the roots.
C) No sugars can be transported from the leaves to the roots.
D) Both water and sugars are prevented from being transported

back 48

C

front 49

54) Where are the youngest wood and the youngest bark in a tree trunk?
A) Youngest wood is in the center of a tree; youngest bark is the outside of the bark.
B) Youngest wood is in the center of a tree; youngest bark is the inner part, next to the vascular cambium.
C) Youngest wood is toward the outside, near the vascular cambium; youngest bark is the outside of the bark.
D) Youngest wood is toward the outside, near the vascular cambium; youngest bark is the inner part, next to the vascular cambium

back 49

D

front 50

55) The polarity of a plant is established when _____.
A) cotyledons form at the shoot end of the embryo
B) the shoot-root axis is established in the embryo
C) the primary root breaks through the seed coat
D) the shoot first breaks through the soil into the light as the seed germinates

back 50

B

front 51

56) Growth and development of plant parts involves _____.
I) cell division to produce new cells
II) enlargement and elongation of cells
III) specialization of cells into tissues
A) only I
B) only II
C) only III
D) I, II, and III

back 51

D

front 52

57) Totipotency is a term used to describe a cell's ability to give rise to a complete new organism. In plants, this means that _____.
A) plant development is not under genetic control
B) the cells of shoots and the cells of roots have different genes
C) cell differentiation depends largely on the control of gene expression
D) a cell's environment has no effect on its differentiation

back 52

C

front 53

58) Which of the following statements is true?
A) A band of ribosomes determines where a cell plate will form in a dividing plant cell.
B) The way in which a plant cell differentiates is determined by the position of the nucleus in the developing plant cell.
C) Homeotic genes often control morphogenesis.
D) Plant cells differentiate because the cytoskeleton determines which genes will be turned "on" and "off."

back 53

C

front 54

59) The phase change of an apical meristem from the juvenile to the mature vegetative phase is often revealed by _____.
A) a change in the morphology of the leaves produced
B) the initiation of secondary growth
C) a change in the orientation of preprophase bands and cytoplasmic microtubules in lateral meristems
D) the activation of floral meristem identity genes

back 54

A