plant tissues and organs

Question 1

what are plant tissues?

Answer 1

collections of cells specialised to carry out specific functions

Question 2

what is an example of an organ system in a plant? (3)

Answer 2

roots
stem
leaves

Question 3

what is xylem’s function?

Answer 3

transpiration

Question 4

what is phloem’s function?

Answer 4

translocation

Question 5

how do root hair cells allow more water to enter by osmosis?

Answer 5

increase surface area

Question 6

what do root hair cells contain and why?

Answer 6

lots of mitochondria to provide energy for active transport

Question 7

what are stomata?

Answer 7

holes in leaves that open and close to let carbon dioxide in and out

Question 8

how does water leave the stomata?

Answer 8

evaporation

Question 9

what are the factors affecting transpiration? (4)

Answer 9

temperature
humidity
wind speed
light intensity

Question 10

how can temperature affect transpiration? (2)

Answer 10

hotter temperature means particles move faster
more evaporation

Question 11

how can humidity affect transpiration?

Answer 11

more water in the air means less can be evaporated from stomata

Question 12

how can wind speed affect transpiration?

Answer 12

it more quickly removes the layer of water vapor on the surface of leaves

Question 13

how can light intensity affect transpiration?

Answer 13

stomata open in the daytime for photosynthesis so more water is lost through the open stomata

Question 14

where do plants and trees experience high rates of transpiration?

Answer 14

tropical locations

Question 15

if a plant had more leaves what will increase?

Answer 15

the rate of transpiration

Question 16

what is the word equation for photosynthesis?

Answer 16

water + carbon dioxide = glucose + oxygen

Question 17

what is the symbol equation for photosynthesis?

Answer 17

6H2O + 6CO2 = C6H12O6 + 6O2

Question 18

how is glucose stored in plants?

Answer 18

as starch

Question 19

how does water enter the plant?

Answer 19

travels up from the roots (xylem)

Question 20

what is chlorophyll?

Answer 20

the green stuff where the chemical reactions happen

Question 21

what happens to plants if the temperature is too high?

Answer 21

the enzymes denature

Question 22

at what time does carbon dioxide work best in plants?

Answer 22

at night as the plant respires but doesn’t photosynthesise

Question 23

what is the word equation for glucose?

Answer 23

glucose + oxygen = carbon dioxide + water + energy

Question 24

what is respiration?

Answer 24

how all living things generate energy through the use of glucose and oxygen

Question 25

what does it mean when something is insoluble?

Answer 25

doesn't interfere with osmosis

Question 26

how do plants convert convert glucose into amino acids?

Answer 26

by adding nitrates

Question 27

how are mineral ions absorbed by plants?

Answer 27

by active transport

Question 28

what is a reason humans get overweight?

Answer 28

lipids

Question 29

why do plants convert glucose to fats?

Answer 29

to store energy in plants

Question 30

what are plants fats normally?

Answer 30

oils