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Biology > Gas Exchange In Plants > Flashcards

Gas Exchange In Plants Flashcards

1
Q

What is gas exchange in plants?

A

The process by which plants take in carbon dioxide and release oxygen.

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2
Q

True or False: Stomata are openings on the leaf surface that facilitate gas exchange.

A

True

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3
Q

Fill in the blank: Gas exchange primarily occurs during __________ in plants.

A

Photosynthesis

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4
Q

What gas do plants primarily take in for photosynthesis?

A

Carbon dioxide

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5
Q

What gas do plants release as a byproduct of photosynthesis?

A

Oxygen

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6
Q

Name the process through which plants lose water vapor.

A

Transpiration

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7
Q

What structure regulates the opening and closing of stomata?

A

Guard cells

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8
Q

Multiple choice: Which of the following is NOT a factor affecting gas exchange in plants? A) Light intensity B) Soil moisture C) Wind speed D) Water temperature

A

D) Water temperature

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9
Q

True or False: Gas exchange occurs in all parts of the plant.

A

False

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10
Q

What are the tiny pores on the leaves called that allow gas exchange?

A

Stomata

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11
Q

During which time of day do most plants primarily perform gas exchange?

A

Daytime

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12
Q

Fill in the blank: The process of gas exchange in plants is crucial for __________ production.

A

Oxygen

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13
Q

What is the primary function of stomata?

A

To facilitate gas exchange and control transpiration.

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14
Q

Multiple choice: Which of the following factors can cause stomata to close? A) High humidity B) Low light C) High temperatures D) None of the above

A

C) High temperatures

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15
Q

What role does chlorophyll play in gas exchange?

A

Chlorophyll absorbs light energy, which is necessary for photosynthesis.

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16
Q

True or False: Gas exchange occurs only during the day.

A

False

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17
Q

What is the primary purpose of photosynthesis in plants?

A

To convert light energy into chemical energy.

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18
Q

Fill in the blank: The primary product of photosynthesis is __________.

A

Glucose

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19
Q

What is the relationship between photosynthesis and respiration in plants?

A

Photosynthesis produces oxygen and glucose, while respiration uses them to release energy.

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20
Q

What environmental condition can increase the rate of transpiration?

A

High temperatures and low humidity.

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21
Q

True or False: All plants have the same number of stomata.

A

False

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22
Q

What is the significance of gas exchange for plant growth?

A

Gas exchange is essential for photosynthesis, which provides energy for plant growth.

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23
Q

What happens to the oxygen produced by photosynthesis?

A

It is released into the atmosphere.

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24
Q

Fill in the blank: The gas exchange process is vital for __________ in the ecosystem.

A

Maintaining oxygen and carbon dioxide levels

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25
Q

Name a factor that can decrease the rate of gas exchange in plants.

A

Drought conditions

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26
Q

Multiple choice: Which part of the plant primarily conducts photosynthesis? A) Roots B) Stem C) Leaves D) Flowers

A

C) Leaves

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27
Q

True or False: Gas exchange can occur through the roots of the plant.

A

True

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28
Q

What is the process by which plants take in water and nutrients from the soil?

A

Absorption

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29
Q

Fill in the blank: The main purpose of transpiration is to __________.

A

Cool the plant and facilitate nutrient transport.

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30
Q

What is the term for the exchange of gases between the plant and the atmosphere?

A

Diffusion

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31
Q

True or False: Carbon dioxide is a waste product for plants.

32
Q

What environmental factor can cause stomata to open?

A

Increased light intensity.

33
Q

What is the impact of high carbon dioxide levels on plant growth?

A

It can enhance photosynthesis and growth.

34
Q

Fill in the blank: The __________ of a leaf helps to reduce water loss.

35
Q

What is the role of the xylem in gas exchange?

A

It transports water from the roots to the leaves.

36
Q

Multiple choice: Which of the following gases is a byproduct of respiration? A) Carbon dioxide B) Oxygen C) Nitrogen D) Methane

A

A) Carbon dioxide

37
Q

True or False: Plants can only perform photosynthesis during the day.

38
Q

What is the effect of temperature on the rate of gas exchange?

A

Higher temperatures generally increase the rate of gas exchange.

39
Q

Fill in the blank: The __________ is the primary site of photosynthesis in plants.

40
Q

What is the primary pigment involved in photosynthesis?

A

Chlorophyll

41
Q

True or False: Stomata are primarily located on the upper surface of leaves.

42
Q

What happens to stomata during the night in many plants?

A

They typically close to reduce water loss.

43
Q

Fill in the blank: Plants use __________ to convert sunlight into energy.

A

Photosynthesis

44
Q

What is the role of the phloem in relation to gas exchange?

A

It transports the sugars produced during photosynthesis.

45
Q

Multiple choice: During which process do plants take in carbon dioxide? A) Respiration B) Transpiration C) Photosynthesis D) Evaporation

A

C) Photosynthesis

46
Q

True or False: Gas exchange occurs in the roots of the plant.

47
Q

What is the impact of light intensity on photosynthesis?

A

Higher light intensity increases the rate of photosynthesis.

48
Q

Fill in the blank: The __________ of a plant helps to maximize light absorption.

A

Leaf structure

49
Q

What is the significance of guard cells in plants?

A

They control the opening and closing of stomata.

50
Q

Multiple choice: Which gas is primarily used by plants during photosynthesis? A) Oxygen B) Nitrogen C) Carbon Dioxide D) Hydrogen

A

C) Carbon Dioxide

51
Q

True or False: Photosynthesis and respiration are completely independent processes.

52
Q

What is the effect of drought on gas exchange in plants?

A

Drought can lead to stomatal closure, reducing gas exchange.

53
Q

Fill in the blank: The process of __________ allows plants to release excess oxygen.

A

Photosynthesis

54
Q

What is the main purpose of gas exchange for plants?

A

To obtain carbon dioxide for photosynthesis and release oxygen.

55
Q

Multiple choice: Which of the following is a factor that can affect the opening of stomata? A) Temperature B) Light C) Humidity D) All of the above

A

D) All of the above

56
Q

True or False: Plants can only take in carbon dioxide when stomata are open.

57
Q

What happens to the rate of photosynthesis when carbon dioxide levels increase?

A

It generally increases, up to a certain point.

58
Q

Fill in the blank: The __________ is a waxy layer that helps reduce water loss.

59
Q

What role does light play in gas exchange?

A

Light energy is essential for photosynthesis, which drives gas exchange.

60
Q

Multiple choice: What is the main byproduct of photosynthesis? A) Glucose B) Carbon Dioxide C) Oxygen D) Water

61
Q

True or False: The stomatal density can vary between different plant species.

62
Q

What is the effect of low light on gas exchange in plants?

A

It can reduce the rate of photosynthesis and gas exchange.

63
Q

Fill in the blank: The __________ helps transport nutrients and water throughout the plant.

64
Q

What is the relationship between temperature and transpiration rates?

A

Higher temperatures generally increase transpiration rates.

65
Q

Multiple choice: Which of the following is NOT involved in gas exchange? A) Stomata B) Guard cells C) Phloem D) Chlorophyll

66
Q

True or False: Gas exchange is a passive process in plants.

67
Q

What is the role of water in photosynthesis?

A

Water is a reactant that provides electrons for the photosynthesis process.

68
Q

Fill in the blank: Plants convert __________ energy into chemical energy during photosynthesis.

69
Q

What is the impact of increased humidity on stomatal behavior?

A

Increased humidity can lead to stomatal opening.

70
Q

Multiple choice: Which of the following factors does NOT affect the rate of photosynthesis? A) Carbon dioxide concentration B) Light intensity C) Soil pH D) Temperature

A

C) Soil pH

71
Q

True or False: All plants perform photosynthesis in the same manner.

72
Q

What is the importance of maintaining a balance in gas exchange?

A

It ensures optimal conditions for photosynthesis and respiration.

73
Q

Fill in the blank: The __________ is the part of the plant responsible for photosynthesis.

74
Q

What role do enzymes play in photosynthesis?

A

Enzymes facilitate the chemical reactions involved in photosynthesis.

75
Q

Multiple choice: Which gas do plants release during the night? A) Oxygen B) Carbon Dioxide C) Nitrogen D) Methane

A

B) Carbon Dioxide

76
Q

True or False: Gas exchange is crucial for both plant and animal life.

Biology (17 decks)

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