Transport in plants Flashcards

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1
Q

What is the endodermis?

A

A water supply

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2
Q

Transpiration definition

A

The evaporation of water from the leaves

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3
Q

What affects transpiration?

A

Temperature, light intensity, humidity, waxy cuticle, air movement

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4
Q

Water potential difference

A

Tendency for water to move via osmosis

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5
Q

Adaptation of hydrophytes (plants in wet conditons)

A

Thin waxy cuticle
Open stomata
Air spaces = buoyancy
Wide, flat leaves

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6
Q

What do pits in xylem do?

A

Allow water and minerals to move into and out of the xylem

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7
Q

How are sieve tube elements different from normal plant cells?

A

They have no nucleus, few organelles, and a thin layer of cytoplasm

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8
Q

What do companion cells do?

A

Carry out the living functions for sieve cells

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