Photosynthesis and Light

The portion of the leaf unaffected by iodine

• contains starch

• contains glucose

• contains no starch

• contains no chlorophyll

Tags

NGSS.MS-LS1-6

Why was the leaf boiled in ethanol?

• To evaporate any glucose formed

• To remove starch from the leaf

• To remove chlorophyll from the leaf (decolorize it)

• To infuse the leaf with ethanol so the iodine could work better

Tags

NGSS.MS-LS1-6

If glucose and oxygen are the products of photosynthesis, why is the leaf being tested for starch?

• Starch is another name for glucose

• Glucose is converted to starch

• Oxygen is converted into starch

• Starch is another name for oxygen

Tags

NGSS.MS-LS1-6

NGSS.MS-LS1-7

How long does it take to de-starch a plant?

• A few hours

• 2 days

• 3 days

• 4 days

Tags

NGSS.MS-LS1-6

What gas do plants give off after conducting photosynthesis that humans/animals need in order to live?

• Oxygen

• Carbon

• Nitrogen

• Hydrogen

Tags

NGSS.MS-LS1-6

__________ energy from the sun is changed into __________ energy during photosynthesis

• Chemical energy to light energy

• Light energy to chemical energy

• Thermal energy to light energy

• Electrical energy to chemical energy

Tags

NGSS.MS-LS1-6

What are the 3 key ingredients needed for photosynthesis

• glucose, oxygen, carbon dioxide

• carbon dioxide, water, glucose

• water, soil, sunlight

• sunlight, water, carbon dioxide

Which of the following statement is true regarding photosynthesis

• creates oxygen for animals to breath

• creates energy for consumers to use

• creates food for plants to use

• all of these are correct

Tags

NGSS.MS-LS1-6

What is the tiny openings that let in the carbon dioxide needed for photosynthesis?

• stomata

• xylem

• phloem

• chloroplast

Tags

NGSS.MS-LS1-6

A student is collecting the gas given off from a plant in bright sunlight. The gas being collected is probably ________.

• oxygen

• carbon dioxide

• ATP

• glucose

Tags

NGSS.MS-LS1-6

NGSS.MS-LS2-3