plants

Question 1

what will plants do during the day

Answer 1

respirate
photosynthesis

Question 2

what do plants do at night

Answer 2

respire only

Question 3

where does diffusion happen the most

Answer 3

gas exchange in the leaf

Question 4

metabolic rate of plants vs animals

Answer 4

plants have a lower metabloic rate than animals and require less energy than animals

Question 5

function of stomata

Answer 5

open and close to allow gas exchange but reduce water loss

Question 6

function of cuticle

Answer 6

waxy waterproof layer, transparent to allow light through

Question 7

upper epidermis function

Answer 7

protective cells thing to allow light to penetrate through the cells

Question 8

mesophyll palisade function

Answer 8

main site of photosynthesis, packed with chloroplasts

Question 9

mesophyll spongy function

Answer 9

some photosynthesis occurs in this layer

Question 10

air spaces function

Answer 10

ensure diffusion of gases from the stomata to all cells

Question 11

vascular bundle function

Answer 11

vein including xylem and phloem to transport water and sugar

Question 12

guard cell function

Answer 12

open and close the stomata to allow gas exchange and reduce water loss

Question 13

where is the main site of photosynthesis in the plant

Answer 13

leaf

but also a bit of stem and sepal

Question 14

what runs through the stem and then forms a vein for the leaf

Answer 14

vascular bundle

Question 15

what is the middle layer of a plant cell called

Answer 15

mesophyll

Question 16

be bysa chdin galw yr layers i leaves

Answer 16

waxy cuticle
upper epidermis
palisade mesophyll
spongy mesophyll
vascular bundle
guard cell
stomata

Question 17

adaption of the leaf for photosynthesis (4)

Answer 17

• large surface area
• can turn to be at best possible angle to the sun
• thin so light can penetrate lower layers
• palisade cells are long and packed with chloroplasts

Question 18

what are stomata

Answer 18

small pores

Question 19

what does stomata do

Answer 19

open and close

Question 20

method of stomata opening

Answer 20

• during day light
• accummulation of K+ ions by the guard cells
• increased solute concentration
• decreased water potential
• endosmosis of water
• increased turgidity
• stoma open

Question 21

part 1 of stomata opening

Answer 21

k ions mve into stomata increasing solute potential and decreasing water potential

Question 22

part 2 of stomata opening

Answer 22

water moves in by osmosis making the cell turgid and opening the stomata

Question 23

what is stored stratch converted to

Answer 23

malate

Question 24

what happens when light intensity is too low for photosynthesis

Answer 24

K+ diffuse down a conc gradient out of the guard cells

Question 25

what are xerophytes

Answer 25

plants that need very little water

Question 26

adaptions of xerophytes

Answer 26

waxy cuticle sunken stomata rolled leaves

Question 27

adaption of hyrophytes

Answer 27

- stomata on the upper surface of leaves - reduced root system - reduced veins in the leaves

Question 28

what are hydrophytes

Answer 28

aquatic plants

Question 29

fancy name for desert plants

Answer 29

xerophytes

Question 30

fancy name for aquatic plants

Answer 30

hydrophytes