6.5 - Gas Exchange in Plants Flashcards by Sam McGee

Q

Why do plants need a large leaf surface area?

A

Photosynthesis

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Q

What is a drawback of a large leaf surface area?

A

Lots of water loss

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Q

How do plants limit water loss?

A

Waxy cuticle

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Q

What are xerophytes?

A

Plants adapted to dry environments

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Q

What are key adaptations of xerophytes?

A

Thick waxy cuticle

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Q

What is the function of the upper epidermis with waxy cuticle?

A

Reduces water loss

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Q

What is the function of air spaces in a leaf?

A

Allow gas diffusion

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Q

What is the function of mesophyll cells?

A

Photosynthesis and gas exchange

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Q

What are stomata?

A

Pores surrounded by guard cells

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Q

What is the function of the lower epidermis?

A

Contains stomata and guard cells

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Q

What is the function of vascular tissue?

A

Transports water and nutrients

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Q

How do air spaces aid gas exchange?

A

Provide a network for gases

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Q

How do mesophyll cells aid gas exchange?

A

Large surface area for diffusion

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Q

How do stomata aid gas exchange?

A

Open for gas exchange

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