Chapter 5.4

Question 1

Openings in leaves for entrance of gases

Answer 1

Stomata

Question 2

regulate stomata openings

Answer 2

Guard cells

Question 3

Carbon dioxide enters the leaves of land plants through tiny openings called _______.

Answer 3

Stomata

Question 4

Stomatal openings are surrounded by two kidney bean-shaped cells called

Answer 4

Guard cells

Question 5

movement of water through a plant’s stomata

Answer 5

Transpiration

Question 6

When the guard cells are compressed against each other, the _______ ____ _____.

Answer 6

Stomata are closed

Question 7

When the guard cells change shape to create a gap between them, the _____ _____ _______.

Answer 7

Stomata are open

Question 8

plenty of carbon dioxide, loss of water

Answer 8

Stomata open

Question 9

Conserves water, limits photosynthesis

Answer 9

Stomata closed

Question 10

_____ _______ can lower the rate of photosynthesis.

Answer 10

Higher Temperatures

Question 11

Series of reactions that counteract photosynthesis.

Answer 11

Photorespiration

Question 12

_______ ________ limit carbon dioxide levels.

Answer 12

closed stomata

Question 13

________ is used instead of carbon dioxide to react with RuBP.

Answer 13

Oxygen

Question 14

________ will release carbon dioxide instead of oxygen.

Answer 14

Plants

Question 15

Most plants are _____ plants.

Answer 15

C3

Question 16

Close stomata to conserve water when hot

Answer 16

C3

Question 17

Photorespiration may occur

Answer 17

C3

Question 18

May decline as Earth warms

Answer 18

C3

Question 19

Soybean

Answer 19

C3

Question 20

The Calvin cycle converts two 3 carbon sugars into glucose

Answer 20

C3

Question 21

______ plants avoid photorespiration

Answer 21

C4

Question 22

Additional pathways concentrate carbon dioxide to produce four-carbon sugars.

Answer 22

True

Question 23

Mostly grasses

Answer 23

C4

Question 24

C4 has lower rates of __________ compared to C3 plants.

Answer 24

photosynthesis

Question 25

Enzymes savage CO2 to produce 4-carbon sugars, even when ____ ____ __ _____.

Answer 25

even when the stomata are closed

Question 26

The 4 carbon sugars _______ carbon dioxide molecules to the Calvin cycle when they break down.

Answer 26

Pump

Question 27

CAM plants open their stomata only at _________.

Answer 27

Night

Question 28

Carbon is stored as an ________ in CAM plants.

Answer 28

Acid

Question 29

During the day, acid is broken down to carbon dioxide for use in __________>

Answer 29

Photosynthesis

Question 30

Water loss is slowed by opening ________ only at night. (CAM)

Answer 30

Stomata

Question 31

Carbon dioxide is stored as an ______ _____ in the ______. (CAM)

Answer 31

organic acid

vacuole

Question 32

The acid’s breakdown releases this carbon dioxide to the _______ cycle during the day.

Answer 32

Calvin

Question 33

Clearing of forests for logging, farming, and human settlements

Answer 33

Deforestation

Question 34

C4 grassy plants outperform C3 trees in ____ ________.

Answer 34

Warm Temperatures

Question 35

______ of carbon dioxide added to the atmosphere comes from cutting and burning forests in the tropics.

Answer 35

25%

Question 36

Reforestation projects help reduce deforestation effects.

Answer 36

True