B4 A-C

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  • Created by: holly.xox
  • Created on: 04-09-14 17:44
What does a larger sample size mean ?
Larger sample sizes increase the accuracy of an estimation of population size.
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How do you find the population size?
number in 1st sample × number in 2nd sample divided by the number in 2nd sample previously marked
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If you use the capture-recapture method the data makes certain assumptions , what are they ?
no death, immigration or emigration. • identical sampling methods. • marking does not affect survival rate
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Define ecosystem?
An ecosystem is all living things and the surroundings, in a particular area.
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What is a habitat?
A habitat is where an organism lives.
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Define a community?
A community is all organisms living in an ecosystem.
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What is a population?
A population is the number of a particular organism in a community
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Define zonation?
Zonation is a gradual change in the distribution of species across a habitat.
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What is biodiversity?
Biodiversity is the variety of different species living in a habitat
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Give examples of natural ecosystems that have high biodiversity?
Native woodlands and lakes
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Forestry and fish farms are examples of what sort of ecosystem?
Artificial
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What is the word equation for photosynthesis?
carbon dioxide + water goes to glucose + oxygen
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What is the symbol equation for photosynthesis?
6CO2 + 6H2O goes to C6H12O6 + 6O2
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What are they two statges of photosynthesis?
1.• light energy is used to split water, releasing oxygen gas and hydrogen ions. 2.carbon dioxide gas combines with the hydrogen to make glucose
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How is glucose transported ?
It is transported as soluble sugars
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How is glucose stored?
It is stored as insoluble starch.
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What does the body need glucose for?
Glucose is used for energy (respiration).
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How does water enter a plant?
It enters the plants through the root hairs
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How does carbon dioxide ebter and oxygen leave a plant?
Through the stomata
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Name some of the pigments found in a plant and explain why they need them?
Leaves contain a number of pigments (chlorophyll a and b, carotene and xanophyll) to absorb light from different parts of the spectrum
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Vascular bundles are found in plants , but why do plants need them
Leaves have a network of vascular bundles for support and transport
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What are guard cells in a plant needed for?
Guard cells open and close the stomata
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What part of the leaf contains the most chloroplasts?
The palisade layer contains most of the chloroplasts
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Other cards in this set

Card 2

Front

How do you find the population size?

Back

number in 1st sample × number in 2nd sample divided by the number in 2nd sample previously marked

Card 3

Front

If you use the capture-recapture method the data makes certain assumptions , what are they ?

Back

Preview of the front of card 3

Card 4

Front

Define ecosystem?

Back

Preview of the front of card 4

Card 5

Front

What is a habitat?

Back

Preview of the front of card 5
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