photosynthesis

Question 1

photosynthesis defenition

Answer 1

the process in which plants manufacture carbohydrates from raw materials using energy from the light

Question 2

how are plants autotrophs

Answer 2

they can make complex moelcules from simple molecules

Question 3

how are plants producers

Answer 3

they can make their own food

Question 4

what can plants use glucose for

Answer 4

• starch
• synthesis lipds
• form cellulose for cell wall
• produce amino acids

Question 5

word equation for photosynthesis

Answer 5

carbon dioxide + water -> glucose + oxygen

Question 6

symbol equation for photosynthesis

Answer 6

6CO2 + 6H2O -> C6H1206 + 6O2

Question 7

3 factors that limit the rate of photosynthesis

Answer 7

• temperature
• light intensity
• CO2 concentration

Question 8

what is a limiting factor

Answer 8

something present in the environment in such short supply that it restricts life processes

Question 9

how does temperature affect the speed at which CO2 and H2O move through plant

Answer 9

temp. of environement affects how much kinetic energy the particles have

Question 10

how is light a limiting factor

Answer 10

it affects the amount of energy it has to carry out photosynthesis

Question 11

how does carbon dioxide affect photosynthesis

Answer 11

the more CO2 the faster the reaction happens

Question 12

how is no. of chloroplasts a limiting factor

Answer 12

they contain pignment which absorbs light energy

Question 13

waxy cuticle

Answer 13

-protective layer on top
- prevents water from evaporating

Question 14

upper epidermis

Answer 14

• thin and transparent to allow light to enter the palisade mesophyll underneath

Question 15

palisade mesophyll cells

Answer 15

• column-shaped and tightly packed with chloroplasts to absorb more light

Question 16

spongy mesophyll

Answer 16

• contains air spaces that increases SA:V for diffusion of gases

Question 17

lower epidermis

Answer 17

contains guard cells and stomata

Question 18

stomata

Answer 18

• gas exahcnge takes place
• opens in day, close in night
• evaporation of water also occurs

Question 19

vascular bundle

Answer 19

contains xylem and phloem to transport substance from stomata

Question 20

xylem

Answer 20

• transports water into leaf for mesophyll cells

Question 21

phloem

Answer 21

transports sucrose and amino acids around the plant

Question 22

adaptations of plant leaves

Answer 22

• large SA: A
• thin
• chlorophyll
• stomata

Question 23

magnesium in plants + deficiency

Answer 23

• make chlorophyll
• deficiency: yellowing between veins

Question 24

nitrate in plants + deficiency

Answer 24

• make amino acids
  deficiency: stunted growth and yellowing