Biology test 2

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What is the word equation for photoshymphasis?
carbon dioxide+water=glucose+oxygen
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what are the limiting factors of photoshymphasis?
water, temperature, sunlight, amount of carbon dioxide
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What are the uses of glucose in plants?
stored as starch, resperation, makes cellulose, converted to oils, makes protines
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what does the waxy cutical of a leaf do?
stops water from evaporating out
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what does the palaside layer of a leaf do?
absorbs sunlight
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what does the spungy mesophil layer of a leaf do?
difuses things to paliside cells for photoshymphasis
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what are the veins of plants and what do they do?
xylon-transports water and minerals phloem-transports suger away from the leaf
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what do guard cells do?
controll the opening and closing of the stemata
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what does the stemata do?
alows things to difuse in and out of the leaf
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what happens to the stemata at night?
it closes
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How does water move into plants?
osmoses into root hair cells and defuses up the plant
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How do you meansure transpiration rate?
rate=(end volume-start volume) divided by time
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What is required for healthy plant growth?
potassium and photoshymphasis
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What do food chains show?
the transfer of energy between animals
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what does the arrow on a food chain represent?
transfer of energy
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How do you plot pyromids of numbers/biomass?
devided number by 2 - go to that number on each side
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How do you calculate energy efficency?
(energy in later stage devided by energy in earlier stage) times 100%
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Why are microorganisms inportant?
resycline nitrates-get rid of dead organisms-returns nitrates to soil
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What are common pollutants?
oil, detergents, fertilisers, carbon monoxide, methane, household gasses, sewage, acid rain
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what indicates water pollution?
change in pH, temperature, colour, life
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What indicas air polution?
change in the gasses present
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Which indicator species is used for air polution and why?
lichans because they stop growing
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What indicator species moniter water polution?
mayfly- clean water shrimp-low polution water louse-high polution slugworm-very high polution
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what is bioaccumulation?
the build up of poisens within organisms as you go further up the food chain
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what is eutrophacation?
the death of a lake due to lack of oxygen
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What is intensive farming?
using fertilisers and keeping animals indoors to increase production
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what are herbicides?
weed killers
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what are pesticides?
slug and bug killers
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what are firtilisers?
aids the growth of plants
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what are the advantages of intensive farming?
more plants and food + easy to moniter
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what are the disadvantages of intensive farming?
bad conditions, chemicals could effect humans, eutrophacation, lower food quality
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Other cards in this set

Card 2

Front

what are the limiting factors of photoshymphasis?

Back

water, temperature, sunlight, amount of carbon dioxide

Card 3

Front

What are the uses of glucose in plants?

Back

Preview of the front of card 3

Card 4

Front

what does the waxy cutical of a leaf do?

Back

Preview of the front of card 4

Card 5

Front

what does the palaside layer of a leaf do?

Back

Preview of the front of card 5
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