Starch Test Revision

Rearrange the correct steps to do the starch test

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Match the steps in starch test with their reasons

• Soften the leaf

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• To test presence of starch

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• Break down cell wall and cell structure

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• Colour change shows positive result

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• Remove chlorophyll

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What is the conclusion of using a variegated leaves in the starch test?

• Carbon dioxide is necessary for photosynthesis

• Glucose is necessary for photosynthesis

• Light is necessary for photosynthesis

• Chlorophyll is necessary for photosynthesis

What is the conclusion of covering some of the leaves with aluminium foil in the starch test?

• Carbon dioxide is necessary for photosynthesis

• Glucose is necessary for photosynthesis

• Light is necessary for photosynthesis

• Chlorophyll is necessary for photosynthesis

What is the conclusion of using soda lime or sodium hydroxide in the starch test?

• Carbon dioxide is necessary for photosynthesis

• Glucose is necessary for photosynthesis

• Light is necessary for photosynthesis

• Chlorophyll is necessary for photosynthesis

Which raw materials of photosynthesis that is NOT AVAILABLE in this test?

• Oxygen
• Light

• Water
• Carbon dioxide

Which raw materials of photosynthesis that are AVAILABLE in this test?

• Oxygen
• Light

• Water
• Carbon dioxide

Which raw materials of photosynthesis that are NOT AVAILABLE in this test?

• Oxygen
• Light

• Water
• Carbon dioxide

Which raw materials of photosynthesis that are AVAILABLE in this test?

• Oxygen
• Light

• Water
• Carbon dioxide

At the end of starch test, the positive result will make the iodine solution colour

• turn purple

• turn blue-black

• turn red

• stay yellow