1
The elongation of root and stem forms what is known as theA) initial plant B) protoplant C) primary plant body D) secondary growth 2
Internode elongation in corn results from the growth ofA) intercalary meristem B) protoderm C) procambium D) cork cambium 3
Which of the following is not a kind of epidermal cell?A) trichome B) root hair C) guard cell D) cork 4
Unlike the flow through vessels, water conducted by tracheids must flow throughA) pits B) pores C) sieve plates D) tubes only 5
The primary walls of the endodermis are impregnated withA) lignin B) wax C) proteins D) suberin 6
Fleshy fruits that are brightly colored are often dispersed byA) insects B) water C) mammals D) birds E) wind 7
Which one of the following is not a drupe?A) a peach B) an apple C) an olive D) a plum E) a cherry 8
Fruits derived from a single flower with more than one ovary areA) true berries B) aggregate fruits C) drupes D) multiple fruits E) hesperidiums 9
Which of the following is not a basic plant type?A) pith B) ground tissue C) epidermis D) vascular tissue E) meristems 10
Epiphytic orchid roots are a form of _______________ root.A) aerial B) adventitious C) buttress D) parasitic E) food storage 11
The Irish potato is aA) bulb B) tuber C) corm D) rhizome E) stolon 12
Which of the following is not a modified stem or branch?A) tendrils B) thorns C) bracts D) tubers E) corms 13
Which of the following is not a part of the outer protective layer of mature roots?A) cork cambium B) phelloderm C) periderm D) cork E) epidermis 14
The embryonic protoderm is an example ofA) procambium B) vascular cambium C) primary meristem D) lateral meristem E) ground meristem 15
The form of conducting element found almost exclusively in angiosperms isA) sieve cell B) vessel C) tracheid D) sieve tube E) rays 16
Wood consists of accumulatedA) primary xylem B) phloem C) schlerenchyma D) secondary xylem E) secondary phloem 17
The apical meristem gives rise to all of the following exceptA) protoderm B) vascular cambium C) procambium D) ground meristem E) primary meristem 18
Primary vascular tissues are produced by theA) protoderm B) ground meristem C) intercalary meristems D) procambium E) lateral meristems 19
Cactus stems may be modified into photosyntheticA) spines B) cladophylls C) tendrils D) stolons E) rhizomes 20
The onion is an example of aA) tuber B) rhizome C) corm D) bulb E) stolon 21
The outward cell division of the root apical meristem produces theA) root hairs B) xylem C) branch roots D) root cap E) pith parenchyma 22
The gritty texture of pears is caused byA) sclereids B) collenchyma C) tracheids D) parenchyma E) pits 23
Which of the following isn't a form of modified leaf?A) bract B) spine C) window leaf D) prickle E) thorn 24
Mature sclerenchyma cells areA) suberized and contain no living protoplasts B) thin walled and often contain chloroplasts C) lignified and contain living protoplasts D) suberized and contain living protoplasts E) lignified and contain no living protoplast 25
Venation of monocot leaves would best be described asA) palmate B) alternate C) parallel D) pinnate E) whorled 26
The outermost layer of the stele of a root is theA) cortex B) endodermis C) pericycle D) pith E) Casparian strip 27
Primary growth in plants is initiated by theA) apical meristems B) vascular cambium C) lateral meristems D) ground tissue E) dermal tissue 28
Gas exchange through the bark occurs throughA) stomata B) pits C) lenticles D) spiracles E) micropyles 29
What do fibers, collenchyma, sclerenchyma, and xylem have in common?A) They are all components of plant connective tissues. B) They all function in support of the plant. C) They are all dead at maturity. D) a, b, and c. E) a and b, but not c. 30
The conducting elements of the phloem are part of the tracheids.A) True B) False 31
Water is easily moved through living organisms because most cells have water pumps.A) True B) False 32
An important function of plant parenchyma is to form a thick, hydrophobic layer on the surfaces of stems and leaves which acts as an effective barrier to evaporation.A) True B) False 33
Which of the following meristems is mismatched with the structure/tissue produced?A) cork cambium -- periderm B) ground meristem -- cortex and pith of a dicot stem C) procambium -- primary vascular tissue D) protoderm -- vascular tissue of a monocot stem E) vascular cambium -- xylem and phloem of an older tree 34
Which of the following statements about phloem tissue is correct?A) Phloem tissue distributes water and minerals absorbed by the roots to the rest of the plant. B) The sieve elements of angiosperms are sieve tube members, while the sieve elements of gymnosperms are sieve cells. C) Primary and secondary phloem is derived from the vascular cambium. D) Phloem may be primary or secondary, but in either case the sieve elements are nonliving cells. E) Only a and d are correct. 35
You are most likely to find root hairs in which of the following areas of the root?A) root cap B) zone of cell maturation C) zone of cell elongation D) zone of cell division 36
A plant with a fibrous root system and leaves with parallel venation would also have:A) a vascular cambium. B) secondary xylem and phloem. C) a cork cambium. D) all of the above. E) none of the above. 37
Lateral roots of a young oak tree originate from the pericycle of the taproot.A) True B) False 38
Tracheids and vessel elements of the primary plant body originate from the protoderm.A) True B) False 39
Parenchyma typically lack a secondary wall and often function as storage depots.A) True B) False 40
Tracheids and vessels are found in the xylem of all seed plants.A) True B) False 41
In primary roots, phloem is located in the center of the vascular cylinder.A) True B) False