1
1
State the name of the process that occurs in the presence of chlorophyll.
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[1]
[Total: 1]
2
State two ways a plant uses water other than for transpiration.
1 ...............................................................................................................................................
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2 ...............................................................................................................................................
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[2]
[Total: 2]
3
Low concentrations of carbon dioxide in the air may restrict the rate of photosynthesis in plants.
State one other feature of the environment that may also restrict the rate of photosynthesis.
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[1]
[Total: 1]
2
4
The diagram shows a section through a leaf.
On the diagram:
Label with a label line and the letter A the type of cell where most photosynthesis takes place.
Label with a label line and the letter B the type of cell which conducts water through the plant. [2]
[Total: 2]
3
5
The photomicrograph shows a cross-section of part of a leaf.
Structure C in the photomicrograph is part of the transport system in the leaf.
State the names of two tissues that structure C contains.
1 ...............................................................................................................................................
2 ...............................................................................................................................................
[2]
[Total: 2]
6
State the name of the mineral ion the plant needs to make chlorophyll.
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[1]
[Total: 1]
4
7
Researchers investigated the effects of using a fertiliser on the number of leaves grown by plants.
The fertiliser contained nitrate and magnesium ions.
Plants in group 1 were grown in soil with fertiliser.
Plants in group 2 were grown in soil without fertiliser.
The results are shown in the graph.
Describe the results shown in the graph.
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[3]
5
[Total: 3]
8
The diagram shows part of the human alimentary canal and associated organs.
The boxes on the left show three letters from the diagram that identify three different organs.
The boxes in the middle show the names of some of the organs in the diagram.
The boxes on the right show some functions of organs.
Draw three lines to link each letter to the name of the organ the letter identifies in the diagram.
Draw three more lines to link these organs to a correct function. Draw a total of six lines.
letter from
diagram
name of the organ
function
anus
absorption
ileum
assimilation
mouth
egestion
pancreas
ingestion
D
E
G
[6]
6
[Total: 6]
9
State the name of an enzyme that digests proteins.
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[1]
[Total: 1]
10 Emulsification of fats occurs in the alimentary canal.
State the name of the structure in the villi where digested fats are absorbed.
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[1]
[Total: 1]
11
Describe one way of preventing dental decay.
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[1]
[Total: 1]
7
12 A student investigated the rate of photosynthesis in a plant at different temperatures.
The results are shown in the table.
temperature / ° C
rate of photosynthesis
/ arbitrary units
20
42
25
61
30
77
35
92
40
45
.
Calculate the percentage increase in the rate of photosynthesis from 20 °C to 30 °C.
Give your answer to three significant figures.
Space for working.
...................................................... % [3]
[Total: 3]
13 Photosynthesis is a process that occurs in plant cells.
State the type of energy required for photosynthesis.
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[1]
[Total: 1]