Exam 6

Question 0

which of the following substances can limmit plant growth in nature

Answer 0

all of these

Question 1

which 2 elemenets make up more than 90% of the dry weight of plants

Answer 1

O & C

Question 2

Humus is

Answer 2

organic constituents of soils

Question 3

in what form do plants take up most soil minerals

Answer 3

as ions dissolved in water

Question 4

which of the following is an example of fixed nitrogen

Answer 4

NH2 and NO3

Question 5

Which of the following most accurately describes carnivorous plants

Answer 5

photosynthetic autotrophs

Question 6

in the nutrition of a plant, which element is classified as a macronutrient

Answer 6

carbon

Question 7

nitrogen fixation is a process that

Answer 7

converts ammonia to nitrate

Question 8

among important crop plants, nitrogen-fixing root nodules are most commonly an attribute of

Answer 8

legumes such as peanuts

Question 9

carnivorous plants have mechansims that trap and digest small animals. the products of this digestion are used to supplement the plant’s supply of

Answer 9

minerals

Question 10

where would you look to find the gametophyte generation of a flowering plant

Answer 10

in flower parts

Question 11

what is a radicle

Answer 11

an embryonic root

Question 12

What are adventitious roots

Answer 12

all of these

Question 13

which is the most accurate description of how plants grow

Answer 13

by both the addition of new cells and cell expansion

Question 14

which of the following terms best describes the distinctive architecture of plants

Answer 14

radial symmetry and apical-basal symmetry

Question 15

alternation of generations in an angiosperm describes the cycle of life stages between

Answer 15

gametophyte and sporophyte

Question 16

which part of a plant absorbs most of the water and mminerals taken up from the soil

Answer 16

root hairs

Question 17

vascular plant tissue includes all of the following cell types except

Answer 17

cambiumm cells

Question 18

pores on the leaf surface that function in gas exchange are called

Answer 18

stomata

Question 19

one important difference between the anatomy of roots and the anatomy of leaves is that

Answer 19

a waxy cuticle covers leaves but is absent in roots

Question 20

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 the tree has grown to a height of 30 meters. the nail is now __ meters above the ground

Answer 20

1.5

Question 21

The vascular tissue system of a 3 year old eudicot stem consists of

Answer 21

2 rings of xylem and 3 of phloem

Question 22

which function is not shared by both the root system and the shoot system of a plant

Answer 22

absorb water

Question 23

which of the following tissues is an embryonic tissue type found at the apex of roots and shoots

Answer 23

meristem

Question 24

which type of root is important in eudicot food storage in plants such as carrots and radishes

Answer 24

taproot

Question 25

an aquaporin is

Answer 25

a protein channel in plasma membranes that faciliatates the diffusion of water

Question 26

by what means can plant accomplish tissue-leve3l transport

Answer 26

all of these

Question 27

the evaporation of water from the surface of a plant is a process most accurately referred to as

Answer 27

transpiration

Question 28

the energy required to power bulk flow in the xylem is ultimately provided by pressure and gravity

Answer 28

false

Question 29

the transport of organic molecules, driven by differences in turgor pressure between a sugar source and a sugar sink, is most accurately referred to as

Answer 29

translocation

Question 30

which term describes forcing water out the the plant at the edges of its leaves

Answer 30

guttation

Question 31

which force is responsible for moving water the the tops of the tallest trees

Answer 31

transpiration

Question 32

which force pushes water into the xylem as osmosis moves water into the root

Answer 32

root pressure

Question 33

to secure genuine maple syrup, maples tree trunks are tapped with metal spigots that interrupt the flow of sap in late winter prior to spring budding. which of the following would be true of this process

Answer 33

all of these

Question 34

all of the following describe an important component of the long-distance transport process in plants except

Answer 34

endodermis Casparian strip

Question 35

in plant roots, the casparian strip is correctly described by which of the following

Answer 35

it ensures that all water and dissolved substances must pass through a cell before entering the vascular tissue

Question 36

which of these would be least likely to enter a plant through the roots

Answer 36

carbon dioxide

Question 37

arrange the following 5 events in an order that explains the mass flow of materials in the phloem

Answer 37

2,4,3,1,5

Question 38

where do the pollen grains of flowers develop

Answer 38

in the anthers of the flower

Question 39

where would you find female gametophytes of a flowering plant

Answer 39

within ovules in a flower's ovary

Question 40

how many whorls of organs occur in complete flowers

Answer 40

4

Question 41

from what structure does a fruit pericarp primarily develop

Answer 41

the ovary wall

Question 42

which of the following is found in eudicot seeds but not in monocot seeds

Answer 42

hypocotylis

Question 43

put in order, from innermost to outermost, the flower organs developed from whorls

Answer 43

4,2,3,1

Question 44

which of the following is not an adapted form of seed dispersal

Answer 44

all of these

Question 45

in monocots, an epcotyl with its first bud enclosed in a protective sheath is known as a __ and the enclosed root is referred to as a

Answer 45

coleoptile; coleorhizae

Question 46

some seeds germinate rapidly upon dispersal, while other seeds are capapble of germinating thousands of years later under appropriate conditions

Answer 46

true

Question 47

ovules are contained within the

Answer 47

ovary

Question 48

pollen would land on the ___ during pollination

Answer 48

stigma

Question 49

the function of the endosperm is to

Answer 49

provide nutrients to the embryo