unit 5: plants

Question 1

roots urpose

Answer 1

anchor the plant, absorb water, store carbs/water/nutrients

Question 2

root cap

Answer 2

dermal tissue
protects root, proteects while pushing thru soil

Question 3

cortex

Answer 3

ground

storage, large vacuoles

Question 4

endodermis

Answer 4

ground

filters water that enters the roots before it enters

Question 5

xylem

Answer 5

vascular

transport water

Question 6

phloem

Answer 6

vascular

transport food

Question 7

root hairs

Answer 7

dermal

increase sa, more absorption

Question 8

stem purpose

Answer 8

provide support for plant leaves and reproductive structure

Question 9

leaf

Answer 9

site of photosynthesis

Question 10

cuticle

Answer 10

waterproof layer

Question 11

epidermis

Answer 11

dermal

secrets wax substance

Question 12

mesophyll

Answer 12

ground

photosynthesis, many chloroplast

Question 13

air spaces

Answer 13

allow gases and water to move around

Question 14

guard cells

Answer 14

dermal tissue

open and close stomata

Question 15

stomata

Answer 15

pores for co2 to enter

Question 16

vascular tissue

Answer 16

xylem and phloem

Question 17

dermal tissue

Answer 17

protective layer

Question 18

examples of dermal tissue

Answer 18

guard cells
trichomes
root hairs
epidermis

Question 19

ground tissue

Answer 19

photosynthesis, storage

Question 20

examples of ground tissue

Answer 20

mesophyll, cortex

Question 21

vascular tissue

Answer 21

transport minerals, water, suagr

Question 22

vascular tissue examples

Answer 22

xylem
phloem

Question 23

epidermal cells

Answer 23

protection
tightly packed
release chem/substances
make up root hairs, guard cells, epidermis

Question 24

parenchyma

Answer 24

ground
thin wall of cellulose
general
spherical shape
chloroplasts
large central vacuole

Question 25

collenchyma

Answer 25

ground elongated for support celery stem flexible

Question 26

sclerenchyma

Answer 26

ground strong support thick wall secondary cell wall

Question 27

tracheid and vessel elements

Answer 27

make up xylem dead @ maturity hollow for transport one direction

Question 28

sieve tube elements and companion cells

Answer 28

phloem next to each other all directions

Question 29

transport of sugars

Answer 29

sugar is produced in leaf and transported into phloem water moves into phloem frm xylem due to osmosis extra water pushes the sugar sugars can be used or converted to starch

Question 30

transport of water

Answer 30

transpiration: stomata open and water evaporates cohesion/adhesion: cohesion: water attracted to each other adhesion: water is attracted to xylem vessel root pressure: high concentration of minerals in roots osmosis: causes high pressure pushes it upwards

Question 31

auxin

Answer 31

promote cell division elongate stems and roots allows plant to stretch to sun can cause growth in one area but not another

Question 32

cytokinin

Answer 32

promotes cell division and differentiation prevents sensesense (aging) controls chlorophyll

Question 33

giberelines

Answer 33

promote cell elongation seed germiniation promote growth/size of fruit promote vascular tissue and elongation of stem

Question 34

ethylene

Answer 34

gas hormone ripens fruit dropping leavesa

Question 35

abscisic acid (aba)

Answer 35

promotes dormacy closes stomata maintain seed dormancy inhibit growth

Question 36

tropic

Answer 36

is permanent

Question 37

phototrophism

Answer 37

growth in response to light

Question 38

gravitropism

Answer 38

growth in response to gravity (roots pos gravi stem is neg)

Question 39

thigmotropism

Answer 39

growth in response to touch

Question 40

nastic

Answer 40

reversable

Question 41

thigmonastic

Answer 41

move in response to touch

Question 42

photonastic

Answer 42

move in response to light

Question 43

meristem

Answer 43

stem cells for plants

Question 44

apical meristem

Answer 44

root tips, stem tips

Question 45

lateral meristem

Answer 45

vascular bundle