plants

Question 1

Style

Answer 1

connects the stigma to the ovary

Question 2

stigma

Answer 2

receives pollen grain

Question 3

anther

Answer 3

produces pollen grains

Question 4

filament

Answer 4

connects the anther to the flower

Question 5

filament

Answer 5

connects the anther to the flower

Question 6

sepal

Answer 6

protects flower bud

Question 7

In terms of gravity what are stems and roots

Answer 7

roots = positively geotrophic

stems = negatively geotrophic

Question 8

In terms of light what are stems and roots

Answer 8

stems = positively phototrophic

roots = negatively phototrophic

Question 9

what is the structure

Answer 9

-cuticle
-upper epidermis
-palisade mesophll
-spongy mesophll (air spaces = gasses pass through easier via diffusion)
- lower epidermis
-guard cells + stomata (allow air entry )
-cuticle

Question 10

how are leaves adapted to maximise gas exchange

Answer 10

thin = short diffusion distance

flat = large SA : volume ratio

Question 11

what are the 4 Nutrients plants need

Answer 11

magnesium
phosphate
nitrate
potassium

Question 12

role of waxy cuticle

Answer 12

reduce water loss by evaporation. protective layer at top of leaf

Question 13

role of upper epidermis

Answer 13

very thin and transparent to allow light into palisade mesophyll

Question 14

what’s in the lower epidermis

Answer 14

guard cells and stomata

Question 15

when do guard cells open the stomata

Answer 15

when there is lots of water available cells fill and and open stomata

Question 16

role of stomata

Answer 16

site of gas exchange and site of where water is lost by evaporation

Question 17

when does stomata open and close

Answer 17

open in day
close at night

Question 18

What is the function of the palisade mesophyll?

Answer 18

Contains lots of chloroplasts so that photosynthesis can happen rapidly.

Question 19

What is the role of the spongy mesophyll?

Answer 19

m lots of air spaces allow gases to diffuse in and out of cells faster,

increases the surface area to volume ratio.

Question 20

What do guard cells do?

Answer 20

Kidney-shaped cells that open and close the stomata by absorbing or losing water.

Question 21

What mineral ion is required for chlorophyll production?

Answer 21

Magnesium.

Question 22

What is the deficiency symptom of magnesium?

Answer 22

Causes leaves to turn yellow.

Question 23

What mineral ion is required to produce amino acids?

Answer 23

Nitrate.

Question 24

What are the deficiency symptoms of nitrate?

Answer 24

Causes stunted growth and turns leaves yellow.

Question 25

what does phloem do

Answer 25

transport sucrose and amino acids between leaves and other party’s of the plant (translocation)

Question 26

what does xylem do

Answer 26

water travels up xylem from roots into leaves to replace water that has been lost due to transpiration

Question 27

what is xylem made of

Answer 27

dead cells

Question 28

what is phloem made of

Answer 28

living cells

Question 29

what do xylem cell walls contain and do phloem cell walls contain this?

Answer 29

xylem cell walls contain lignin(strong) phloem do not contain in

Question 30

what is hollow xylem or phloem

Answer 30

xylem as they contain no end cell walls

Question 31

what cell out of phloem and cycles contain cytoplasm

Answer 31

phloem