plants

Question 1

node

Answer 1

part on stem where pant is attached

Question 2

internode

Answer 2

space on stem between two nodes

Question 3

petiole

Answer 3

stalk of leaf that connects it to the stem

Question 4

flower

Answer 4

reproduction

Question 5

bud

Answer 5

underdeveloped shoot

Question 6

apical bud

Answer 6

site of stem growth at tip of shoot system

Question 7

tap root

Answer 7

one main/ primary root

Question 8

fibrous roots

Answer 8

equal sized

Question 9

adventitious

Answer 9

dont develop from radicle unusual or

Question 10

root function

Answer 10

anchor plant to soil absorb water and minerals, transport absored materials to shoot

Question 11

protection zone(root)

Answer 11

root cap protects cells

Question 12

meristematic zone

Answer 12

plant tissue capable of mitosis- produces new cells for growth found in root and shoot tips

Question 13

elongation zone

Answer 13

cells from meristem increase in length

Question 14

differentiation zone

Answer 14

decides which tissue

Question 15

stem function

Answer 15

support, transport

Question 16

leaf functions

Answer 16

gas exchange, transpire, photosyn

Question 17

dermal tissue

Answer 17

protect plant from pathogens, root hairs absorb waxy cuticle-prevents water loss

Question 18

ground

Answer 18

strength support storage

Question 19

tracheids

Answer 19

tappered- have pits overlap allows water passage

Question 20

vessel -xylem

Answer 20

tube continuous pits wider than t more efficient found in flowering plants

Question 21

roots in osmosis

Answer 21

cytoplasm of root hairs contains lots of dissolved solutes- water moves in- root hair no waxy cuticle

Question 22

transpiration

Answer 22

loss of water vapour from leaves and other aerial parts of plant by evaporation

Question 23

control of water loss

Answer 23

waxy cuticle, stomata on underside- less evap, stomata open and close

Question 24

food storage

Answer 24

carrot- tap root
stem potato
leaf -onion

Question 25

lenticels

Answer 25

openings in plant cells that allow for gas exchange

Question 26

palisade mesophyll

Answer 26

many chloroplasts carry out photosynthesis

Question 27

stimulus

Answer 27

a change in environment

Question 28

response

Answer 28

activity in response to stimulus-tropism

Question 29

growth regulation

Answer 29

external: light day length gravity temperature internal; growth regulators made in meristematic tip

Question 30

phototropism

Answer 30

change in growth in response to light

Question 31

geotropism

Answer 31

response to gravity

Question 32

thigmotropism

Answer 32

response to touch eg wrap

Question 33

hydrotropism

Answer 33

water

Question 34

chemotropism

Answer 34

response to minerals

Question 35

growth regulator

Answer 35

chemical that regulates the growth of a plant

Question 36

IAA

Answer 36

produced in meristematic tissue travels by active transport in phloem

Question 37

effects of IAA

Answer 37

loosens cellulose; causes bending/ elongation IAA in tip- inhibits lateral buds- tip removed- low and bushy

Question 38

IAA in phototropism

Answer 38

apical meristem- difuse down shade side- IAA on shaded side- cell elongation- bend to light

Question 39

growth inhibitors

Answer 39

ethene- ripens fruit abscisic acid- stomata close in dry weather- inhibits germination

Question 40

commercial growth regulators

Answer 40

ethene- ripens banana tissue culture- IAA on new plants- callus

Question 41

IAA stands for

Answer 41

Idoleacetic acid