first science fmw of yr 10

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10 Terms

1
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spongy mesophyll

gaps in cell in the leaf that allow gases to absorb

2
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stomata

holes in cell where gaseous exchange takes place

3
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guard cell

controls the stomata (flacid= closed stomata turgid= open stomata)

4
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palisade mesophyll

where photosynthesis takes place (in the chlorophyll which is a green pigment that is in the chloroplasts)

5
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limiting factor

a factor that a process is dependent on

6
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what are the limiting factors of photosynthesis?

light intensity, co2 concentration, temperature

7
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what uses does glucose have?

makes amino acids (proteins for growth), cellulose (keeps cells all rigid), respiration, stored as starch, fat and oils

8
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waxy layer

top level if a leaf preventing water loss

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vascular bundle

transport water and sugars to leaves

10
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xylem vs phloem

xylem transports water

phloem transports sugar