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IGCSE Biology 6: Plant Nutrition Flashcards | StudBud
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IGCSE Biology 6: Plant Nutrition
IGCSE Biology 6: Plant Nutrition
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Questions
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Answers
1
What is the green pigment in plants that absorbs light energy?
chloroplast
flower
leaves
chlorophyll
2
Which mineral is essential for making chlorophyll?
iron
phosphate
magnesium
nitrate
3
What is the by-product of photosynthesis?
Carbon dioxide
Oxygen
Glucose
Water
4
What does sodalime do in an experiment to investigate factors of photosynthesis?
Absorb H2O
Absorb CO2
Evolve O2
Evolve CO2
5
What best describes what happens at point C?
Photosynthesis slows because the reactants are used up
Photosynthesis slows because it is too light
Photosynthesis slows because another factor is limiting
Photosynthesis slows because light is a limiting factor
6
Which of the following would be found on the left side of the word equation for photosynthesis?
Light and Chlorophyll
Glucose and Oxygen
Water and Carbon Dioxide
7
Name the structure on the leaf that regulates the amount of CO2 and O2 exiting the leaf?
cuticle
root hairs
stoma
xylem
8
Which mineral is important in making proteins?
magnesium
nitrate
iron
phosphate
9
In which layer does most photosynthesis occur?
vascular bundle
palisade layer
spongy layer
epidermis
10
What are three limiting factors of photosynthesis?
greenhouses
water, light, temperature
water, light, NPK fertilizers
chlorophyll
11
What are the raw materials of photosynthesis?
water and oxygen
glucose and carbon dioxide
glucose and oxygen
carbon dioxide and water
12
In what form is glucose stored in the plant?
starch
glycogen
cellulose
sucrose
13
What are organisms that make their own food called?
parasites
autotrophs
saprotrophs
heterotrophs
14
If the plant needs to create new cell wall material, it would convert what to what?
glucose to sucrose
glycogen to glucose
glucose to cellulose
glucose to galactose
15
Which layer of the leaf prevents it from drying out?
waxy cuticle
guard cell
epidermis
vein
16
What structures are contained in the leaf vein?
xylem and phloem
ethanol
O2 and CO2
chloroplasts
17
What is the product of photosynthesis?
Glucose
Cellulose
Sucrose
Starch
18
What do the letters N, P, and K represent in chemical fertilizers?
Nitrogen, Phosphorus, Potassium
Norman, Peter, and Kyle
Necessary Photosynthetic Krap
Nitrogen, Potassium, Krypton
19
Sucrose is used to transport carbohydrates in the plant because
Glucose will decrease the water potential
Glucose is reactive
Both options
Neither option
20
The graph shows the effect of CO
2
on photosynthesis. What are the limiting factors at X and Y?
X: light , Y: light
X: CO2 , Y: CO2
X: CO2 , Y: light
X: light , Y: CO2
21
In which tube will photosynthesis occur?
B
C
D
A
22
Which part of the leaf tested positive for starch?
the inside
the outside
the test is negative
the entire leaf
23
What condition is caused by a magnesium deficiency?
Chlorophyll
Chloroform
Chloroplasts
Chlorosis
24
What factor does not affect the rate of photosynthesis?
Light
Temperature
Carbon dioxide
Oxygen
25
What structures are contained in the leaf vein?
ethanol
O2 and CO2
xylem and phloem
chloroplasts
26
What is the adaptation of palisade mesophyll cells
they are elongated and compact
they control the opening of the stomata
they have air spaces between them
they allow gases to pass through them
27
Which of the following shows a balanced chemical equation for photosynthesis?
6CO2 + 6H20 ----Light & Chlorophyll--> C2H12O6 + 6O2
CO2 + H20 ----Light & Chlorophyll--> C2H12O6 + O2
6CO2 + 6H20 --Light & Chlorophyll--> C6H12O6 + 6O2