5 Plant Nutrition

Question 1

Define photosynthesis

Answer 1

process by which plants manufacture carbohydrates from raw materials using light

Question 2

Explain what chlorophyll does (2)

Answer 2

traps light energy

uses trapped energy to make glucose. The process converts light energy into chemical energy in the form of glucose

Question 3

Word equation for photosynthesis

Answer 3

Carbon dioxide + Water —-> glucose + oxygen

Question 4

balanced chemical equation for photosynthesis

Answer 4

6CO2 + 6H20 —–> C6H12O6 + 6O2

Question 5

Usage of glucose in plants

Answer 5

used as a reactant for respiration to release energy

Question 6

Usage of sucrose in plants

Answer 6

Transported through the phloem to other parts of the plant (glucose is reactive)

Question 7

Usage of starch in plants

Answer 7

storage

Question 8

Function of waxy cuticle (2)

Answer 8

stops water evaporating from leaf

protection

Question 9

Function of chloroplast

Answer 9

contains chlorophyll for photosynthesis

Question 10

Describe the function and features of the upper epidermis (2)

Answer 10

transparent to allow light to pass

doesn’t contain any chloroplasts

Question 11

Desrcibe the palisade mesophyll (3)

Answer 11

contains many chloroplasts

columnar shaped to allow many cells to be tightly packed together to maximise light absorption

site of photosynthesis

Question 12

Function of xylem

Answer 12

transport of water and minerals

Question 13

function of phloem

Answer 13

transport of sucrose to different parts of the plant

Question 14

Collective name for xylem and phloem

Answer 14

vascular bundle

Question 15

Function of spongy mesophyll

Answer 15

contains air spaces to allow efficient diffusion of gases throughout the leaf

Question 16

function of stomata

Answer 16

small opening on the underside of the elaf that allow diffusion of gases in and out of the leaf

Question 17

Function of gaurd cell

Answer 17

opens and closes stomata

Question 18

What two minerals are needed in plants

Answer 18

nitrate ions

magnesium ions

Question 19

Function of nitrate ions

Answer 19

synthesis of amino acids

Question 20

Function of magnesium ions

Answer 20

chlorophyll production

Question 21

How does deficieny of nitrate ions look like

Answer 21

stunted growth and yellow leaves

Question 22

How does deficieny of magnesium ions look like

Answer 22

stunted growth and yellow leaves

Question 23

Factors that affect photosynthesis (3) + explanation

Answer 23

Light intensity

Amount of CO2

Temperature

Question 24

Define limiting factor

Answer 24

the factor that is at the lowest level which limits the rate of reaction

Question 25

What would happen if the limiting factor increased

Answer 25

rate of reaction will increase until one of the other factors become limiting

Question 26

How does the graph of the factors that affect photosynthesis look like? (3)

Answer 26

no answers, you should know it stupid silly goose.