iclicker

Question 1

which of the following pairs are both challenges to living on land

Answer 1

desiccation and water transport to and from tissues

Question 2

all plants have a haplodiplontic life cycle. This is more commonly known as

Answer 2

alternation of generations

Question 3

seedless vascular plants like ferns have all the following characteristics except

Answer 3

cones or flowers

Question 4

evolutionary advantages (adaptations) of seeds

Answer 4

-protecting embryo
-food supply for embryo
-can hold an embryo and its food dormant while it disperses or otherwise waits for its time to germinate

Question 5

what is not necessary for fertillization

Answer 5

water

Question 6

plants have

Answer 6

totipotent stem cells called meristem that last their entire lives

Question 7

plant stem cells (meristems) grow into

Answer 7

differentiated cells called tissues which compose plant organs

Question 8

tree rings are the visible result of

Answer 8

secondary xylem
*=wood

Question 9

cork cambium

Answer 9

contributes to outer bark

Question 10

vascular cambium

Answer 10

found between secondary xylem and secondary phloem

Question 11

where does a sugar maple manufacture the sugar that is found in its sap

Answer 11

photosynthetic parenchyma

Question 12

threads in celery are

Answer 12

collenchyma tissue that forms a protective wrapping around the celerys vascular tissue

Question 13

what are leaves stems flowers and roots

Answer 13

plant organs

Question 14

dermal tissue, ground tissue, and vascular tissues

Answer 14

an organ

Question 15

stem cells within the root apical meristem make

Answer 15

new root dermal ground and vascular tissue
and new root organ tissues

Question 16

lingnin

Answer 16

wood

Question 17

tree rings are made up of

Answer 17

secondary xylem

Question 18

ring size gives us information about

Answer 18

age of tree, weather/climate/ competiton with surrounding trees

Question 19

water diffusing from the cell into beaker solution

Answer 19

transmembrane transport

Question 20

waxy casparian strip

Answer 20

regulaiton and routing water and dissolved soil nutrients
help prevent a parasite living in soil from infecting the roots

Question 21

xylem flow during winter/spring than summer

Answer 21

flow more during summer because of leaves

Question 22

water potential

Answer 22

before buds start metabolzing sap stored down the root system flows up in xylem

Question 23

water potential is a measure of

Answer 23

potential energy

Question 24

osmosis

Answer 24

area of more water to an area of less water
diffusion of water from a solution of lower solute to higher solute

Question 25

fertilizer increases solute concentration dissolved in water found in the soil what happens to water potenital in soil

Answer 25

becomes more negative

Question 26

water potential decreases as you go up from roots to leaves

Answer 26

water transpires from leaves water potentil decreases

Question 27

water potential is always

Answer 27

more postive in the roots than stems and leaves

Question 28

how are stomata involved in water transport through xylem

Answer 28

open stomata create negative water pressure as water evaporates leaving behind more solutes in other leaf cells

Question 29

translocation is accomplished along

Answer 29

concentration gradients

Question 30

the plants sets up gradients through

Answer 30

sources and sink source: where its made or stored sink: where its used

Question 31

in pressure flow hypothess the leaves would be known as

Answer 31

the source

Question 32

plant structres that need carbohydrates are known as

Answer 32

sink

Question 33

high to low sugar solute concentration

Answer 33

phloem in leaf > phloem in fruit

Question 34

autrophs

Answer 34

absorb simple nutrient chemicals and synthesize them into nutrient chemicals and then incorprate them into their body parts

Question 35

hetertrophs

Answer 35

eat food and digest down to simple nutrient chemicals to then incorporate those into their body parts

Question 36

weather of rocks and sediments makes

Answer 36

phosphorus available to plants

Question 37

intake of nutrients from the soil is facilltated by

Answer 37

ion exchange (protons)

Question 38

mycorrhizal fungi

Answer 38

help fetch nutrients from soil create a communication network protect plants from certain diseases

Question 39

we use plants to (phytoermediation)

Answer 39

phytodegration phytovoaltiization phytoaccumatle

Question 40

allelopathy

Answer 40

one plant produces a signal that influences growth or metabolism of other plants

Question 41

plant hypersensitive response

Answer 41

kills its own tissues that surround the invader thereby trapping it

Question 42

plant photomorphogenesis, plant growth responses is mediated by phytochrom Pr and Pfr

Answer 42

shoot elongation seed germination detection of plant competition

Question 43

why do plant shoots and leaves point towards the direction of blue light (phototropism)

Answer 43

chlorophyll a and b use blue light most effectively in photosynthesis

Question 44

auxin

Answer 44

directional response to bend shoot towards light

Question 45

advanatage for mutualistv relationshop beteen plant and pollinator

Answer 45

increases chances that pollen is deposited on correct flower

Question 46

polliniation from another indivdual

Answer 46

cross pollination

Question 47

gametophyte

Answer 47

embryo sac containg 8 nuclei

Question 48

egg

Answer 48

egg 1 of the 8 nuclie in embryo sac

Question 49

embryo

Answer 49

immature plant within a seed

Question 50

sporangia

Answer 50

ovule, megaspore mother cell within

Question 51

spore

Answer 51

made by meiosis divides by mitosis to become gametophyte