Timed Quiz

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Timed Quiz

• You are about to see 10 questions
• You have 20 seconds to answer each question
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Question 1

• What colour is chlorophyll?

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3
Question 2

• What gas is required by plants for photosynthesis?

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4
Question 3

• What is the name of the part of a vein that
  carries water into the leaf?

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5
Question 4

• What are the tiny holes on the underside of a
  leaf called?

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6
Question 5

• What is this waxy layer on the top of the leaf
  called?

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7
Question 6

• Is this layer of cells inside the leaf called the
  
• Palisade
• Epidermis
• Spongy

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8
Question 7

• Iodine is used to test a leaf for starch.
• What colour does iodine turn if starch is present?

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9
Question 8

• What is missing from the end of this equation for
  photosynthesis?

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10
Question 9

• When testing a leaf for starch, the first stage
  is to boil the leaf in water.
• Why do we boil the leaf?

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Question 10

• When testing a leaf for starch, the second stage
  is to boil the leaf in ethanol.
• Why do we boil the leaf in ethanol?

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Timed Quiz

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Reveal Answers
13
Question 1

• What colour is chlorophyll?

Answer
Green
14
Question 2

• What gas is required by plants for
  photosynthesis?

Answer
Carbon dioxide
15
Question 3

• What is the name of the part of a vein that
  carries water into the leaf?

Answer
Xylem
16
Question 4

• What are the tiny holes on the underside of a
  leaf called?

Answer
Stomata
17
Question 5
What is this waxy layer on the top of the leaf
called?
Answer
Cuticle
18
Question 6

• Is this layer of cells inside the leaf called the
  
• Palisade
• Epidermis
• Spongy

?
19
Question 7

• Iodine is used to test a leaf for starch.
• What colour does iodine turn if starch is present?

Answer
Purple / Blue / Black
20
Question 8

• What is missing from the end of this equation for
  photosynthesis?

Answer
Oxygen
21
Question 9

• When testing a leaf for starch, the first stage
  is to boil the leaf in water.
• Why do we boil the leaf?

Answer
Kill the leaf
22
Question 10

• When testing a leaf for starch, the second stage
  is to boil the leaf in ethanol.
• Why do we boil the leaf in ethanol?

Answer
Remove the green / chlorophyll
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Timed Quiz

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