Biology, B4 OCR gateway revision

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  • Created by: charlotte
  • Created on: 07-06-13 11:47
In what ways are palisade cells designed for photosynthesis?
many chloroplasts, large surface area, transparent
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name 3 features of a leaf
large surface area, thin, air spaces
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in diffusion does it move from low to high concentration or high to low?
High to low concentration
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Osmosis is the movement to high or low water concentration?
High to low water concentration (low to high concentrated solution)
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name the 4 cell shapes
Normal, Turgid (hard), Flaccid (wilted due to lack of water, little pressure), Plasmolysed
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Transpiration is caused by..
evaporation and diffusion
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definition of transpiration:
loss of water through a plant
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4 factors that affect transpiration:
light intensity, temperature, air movement, air humidity
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phloem properties:
columns of living cells, perforated end plates, both ways
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xylem properties
dead cells end to end, no end plates, one way, strong and stiff
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elements that plants need
nitrogen (for amino acids for growth). phosphates (dna and membranes for respiration and growth). potassium (help enzymes for photosynthesis & respiration).
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plant cells contain:
a cell membrane, a cell wall, a vacuole, nucleus, cytoplasm and chloroplasts
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Other cards in this set

Card 2

Front

name 3 features of a leaf

Back

large surface area, thin, air spaces

Card 3

Front

in diffusion does it move from low to high concentration or high to low?

Back

Preview of the front of card 3

Card 4

Front

Osmosis is the movement to high or low water concentration?

Back

Preview of the front of card 4

Card 5

Front

name the 4 cell shapes

Back

Preview of the front of card 5
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