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Axillary buds


A) add length to a plant.
B) develop into roots when water is scarce.
C) form flowers or branches.
D) increase the diameter of a stem.
E) form lateral meristems.

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Primary growth at the apical meristems can produce cells that differentiate into each of these cell types,except which?


A) leaves
B) ground tissue
C) procambium
D) cork cambium
E) epidermis

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Parenchyma,collenchyma,and sclerenchyma are all types of cells derived from


A) procambium tissue.
B) ground tissue.
C) vascular cambium tissue.
D) cork cambium tissue.
E) epidermal tissue.

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You have been assigned the task of identifying the cells in a plant tissue sample.Using your microscope you determine the cells are living and their cell walls vary in thickness.Upon further observation you note that the cells are arranged in strands just below the epidermal surface.What cell type do you determine the cells to be?


A) Collenchyma
B) Parenchyma
C) Sclerenchyma
D) Sieve elements
E) Tracheids

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Which of the following statements correctly describes the vascular cambium?


A) It develops between the primary xylem and the primary phloem in dicots.
B) It occurs only in monocot stems.
C) It is important in the elongation of roots.
D) It is formed by the ground meristem.
E) It is responsible for all cell types that result from primary growth.

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You are asked to determine if a tissue sample taken from a plant stem comes from a monocot or eudicot.How will you accomplish this?


A) Look at the ground tissue to see if it is arranged in concentric rings or in parallel bundles.
B) Examine the vascular cambium and determine if it is divided into segments or is continuous throughout the stem.
C) Determine if the xylem and phloem are located in separate vascular bundles or are bundled together.
D) Examine the epidermis and determine the depth of the cuticle layer.
E) Locate the vascular bundles and analyze their pattern.

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A birdhouse is nailed into a tree 6 feet up from the ground.If the tree grows about 2 feet taller each year,where will the birdhouse be 25 years later?


A) 50 feet
B) 56 feet
C) 26 feet
D) 6 feet
E) 4 feet

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If the wer gene were expressed in every root epidermal cell,the plant would


A) greatly increase its absorptive capacity.
B) strengthen its attachment to the soil.
C) increase in the diameter of its roots.
D) greatly reduce its water and nutrient uptake.
E) greatly reduce its ability to exchange gases at the epidermal surface.

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A plant that has the mutant form of the WEREWOLF gene (wer) would be identifiable by


A) the excessive number of vascular bundles in stem.
B) the lack of fibers in the outer portions of the stem.
C) the abundance of microscopic hairs on the root.
D) the extra thick layer of mesophyll cells in the leaf.
E) the lack of microscopic hairs along the epidermis of the root.

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A major distinguishing feature between monocot and eudicot stems is the organization of the


A) epidermis.
B) conducting system.
C) vascular tissue.
D) secondary tissues.
E) ground tissues.

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The pattern of leaf arrangement on a stem is called


A) protodermis.
B) phyllotaxy.
C) nodular termini.
D) meristematic spacing.
E) axillary arrangement.

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You are doing research on rodent populations in a cornfield at night and are hearing popping noises.Your research assistant is getting scared.Having taken biology,you can explain to your assistant that the popping sound is due to


A) the apical meristem cells in the corn stalks elongating.
B) the developing of the kernels of corn on the ears of the corn stalks.
C) the expansion of the lateral meristems increasing the girth of the corn stalk.
D) the growth of the intercalary meristems inside the corn stalk.
E) the development of the tassels on top of the corn stalk.

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The name of the meristem that ultimately gives rise to secondary xylem and phloem is the


A) vascular cambium.
B) cork cambium.
C) intercalary meristems.
D) ground meristem.
E) primary meristem.

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What type of cells are joined end-to-end,conduct water and are connected to each other with strips of wall material?


A) sieve cells
B) tracheids
C) sieve tube members
D) vessel members
E) companion cells

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Plant cells that give rise to two cells,one of which is free to differentiate into various kinds of cells that contribute to the plant body,are called


A) endodermal cells.
B) primary cells.
C) lateral cells.
D) parenchyma cells.
E) meristematic cells.

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An increase in plant diameter results from cell division in which type of meristem?


A) intercalary meristem
B) lateral meristem
C) primary meristem
D) secondary meristem
E) stele meristem

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Secondary phloem


A) includes live companion cells and dead sieve cells.
B) encompasses more stem volume than secondary xylem.
C) primarily stores carbohydrates.
D) is part of the inner bark.
E) is produced by the cork cambium.

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In an experiment,some herbaceous,nonwoody plants were exposed to frequent windy conditions or mechanical shaking for several hours per day.The flexibility of these plants was due to the ________ cells.


A) parenchyma
B) aerenchyma
C) periderm
D) collenchyma
E) sclerenchyma

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Which statement concerning root hairs is not correct?


A) Root hairs are tubular extensions of individual epidermal cells.
B) A root hair is isolated from its epidermal cell with a cross wall.
C) Root hairs generally live only a few days before being sloughed off.
D) Root hairs increase the absorption of water and minerals.
E) Root hairs are located in the zone of maturation of a root.

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Primary growth in plants originates in


A) apical meristems.
B) lateral meristems.
C) vascular cambium.
D) cork cambium.
E) tracheids.

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