plant tissues, organs & systems

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11 Terms

1
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waxy cuticle

protective layer on top of the leaf, prevents water from evaporating

<p>protective layer on top of the leaf, prevents water from evaporating</p>
2
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upper epidermis

thin and transparent to allow light to enter palisade mesophyll layer underneath it

<p>thin and transparent to allow light to enter palisade mesophyll layer underneath it</p>
3
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palisade mesophyll

column shaped cells tightly packed with chloroplasts to absorb more light, maximising photosynthesis

<p>column shaped cells tightly packed with chloroplasts to absorb more light, maximising photosynthesis</p>
4
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spongy mesophyll

contains internal air spaces that increases the surface area to volume ration for diffusion of gases

<p>contains internal air spaces that increases the surface area to volume ration for diffusion of gases</p>
5
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lower epidermis

contains guard cells and stomata

<p>contains guard cells and stomata</p>
6
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guard cells

absorbs and loses water to open and close the stomata to allow co2 to diffuse oxygen in and out

<p>absorbs and loses water to open and close the stomata to allow co2 to diffuse oxygen in and out </p>
7
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stomata

where gas exchange takes place opens in day and closes in night

<p>where gas exchange takes place opens in day and closes in night</p>
8
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xylem

transports water into leaf for mesophyll cells to use in photosynthesis and for transpiration from stomata

<p>transports water into leaf for mesophyll cells to use in photosynthesis and for transpiration from stomata</p>
9
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phloem

transports sucrose and amino acids around the plant

<p>transports sucrose and amino acids around the plant</p>
10
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transpiration

the loss of water vapour from plant leaves by evaporations of water at the surfaces of mesophyll cells followed by diffusion of water vapour through the stomata

<p>the loss of water vapour from plant leaves by evaporations of water at the surfaces of mesophyll cells followed by diffusion of water vapour through the stomata</p>
11
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translocation

the transport of sucrose and amino acids in phloem from regions of storage or use

<p>the transport of sucrose and amino acids in phloem from regions of storage or use </p>