Intro to Photosynthesis

The cell organelle where photosynthesis occurs in plant cells is the

• chloroplast

• mitochondrion

• vacuole

• nucleus

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NGSS.MS-LS1-6

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Most of the chloroplast cells are found in the

• upper epidermis

• pallisade mesophyll layer

• lower epidermis

• stomata

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The water needed for photosynthesis comes into the leaves through the

• upper epidermis

• stomata

• guard cells

• xylem cells

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The important gases, carbon dioxide and oxygen, enter and leave the leaf through the

• upper epidermis

• phloem

• stomata

• guard cells

The role of the guard cell is to

• help control the temperature of the plant

• control how much water enters the leaf

• control how much glucose is stored

• control the movement of water vapour & gases 

What is the name of the elongated, packed cells (part G) directly under the upper epidermis?

• Palisade cells

• Guard cell

• Spongy layer

• Lower epidermis

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NGSS.MS-LS1-2

Which number is pointing to the stomata?

• 6

• 7

• 8

• 9

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NGSS.MS-LS1-6

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What is letter "D" pointing to?

• upper epidermis

• palisade mesophyll

• spongy mesophyll

• bundle sheath

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NGSS.MS-LS1-2

In photosynthesis, plants convert ​ (a)   energy into ​ (b)   energy.

​

• radiant

• electrical

• chemical

• mechanical

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NGSS.MS-LS1-6

Three Anacharis plants were placed inside inverted test tubes filled with water. One test tube was exposed to low light, another to medium light, and another to high light. The table provided shows the results of this experiment. Notice that more oxygen was produced by the Anacharis in high light. Based on the information provided, what is the difference in volume (in mL) of oxygen produced between the low-light and high-light plants after 45 minutes?

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Answer explanation

The plant with more light produced 1.1 mL more oxygen than the plant with low light.

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NGSS.MS-LS1-5

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