Zusammenfassung der Ressource
Frage 1
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A group of organisms that can breed together to produce fertile offspring.
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A group of similar organisms.
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The environment in which an organism lives.
Frage 2
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It is not just the environment that affects the chances of a [blank_start]organism[blank_end] surviving. Organisms are also dependant on other [blank_start]species[blank_end] for their survival. They may depend on other species for food or for their habitat. Many species of insect, for example, have habitats within or on particular [blank_start]plants[blank_end].
In a particular habitat there will be competition between species for resources. [blank_start]Animals[blank_end] may compete for breeding sites or territories, food, mates or living space. Plants may compete for space, [blank_start]light[blank_end], nutrients and water.
A food web shows the feeding [blank_start]interactions[blank_end] of some of the species within a habitat. Because species depend on each other in many ways, any impact on one species within a food web will have a [blank_start]knock-on effect[blank_end] on many of the other species that are part of the same food web. Food webs are extremely useful because they give us a visual representation of [blank_start]interdependence[blank_end].
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organism
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species
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plants
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Animals
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light
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interactions
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interdependence
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knock-on effect
Frage 3
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Using the diagram, choose the correct equation for photosynthesis.
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carbon dioxide + water (+sunlight) -> glucose + oxygen
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oxygen + water (+sunlight) -> glucose + carbon dioxide
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glucose + oxygen -> carbon dioxide + water (+sunlight)
Frage 4
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The efficiency of transfer of energy at each level of a food chain is the ratio of the energy available in the organism's tissues to the total amount of energy the organism has ingested.
percentage efficiency = (energy in tissues/energy in food eaten) x 100
Frage 5
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Complete the diagram of the carbon cycle.
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decay by fungi and bacteria
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respiration
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dead remains of plants and animals
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green plants are eaten by animals
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CO2 added through combustion
Frage 6
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Complete the diagram of the nitrogen cycle.
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Nitrogen gas in the atmoshpere
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Nitrogen-fixing bacteria in plant roots
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Nitrogen-fixing bacteria in soil
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Ammonium
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Nitrates
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Denitrifying bacteria
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Detrivores
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Decomposition
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Amino acids/proteins in plants & animals
Frage 7
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What are examples of non-living indicators?
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mayflies
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carbon doixide levels
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temperature
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phytoplankton
Frage 8
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Organisms can be [blank_start]classified[blank_end] in many different ways. In the past, organisms were classified mainly by their [blank_start]appearance[blank_end]. Today, we have a much more [blank_start]accurate[blank_end] way of classifying organisms, based on their DNA [blank_start]sequences[blank_end]. Organisms with more similar DNA are likely to be more [blank_start]similar[blank_end] species. Classifying organisms in this way helps us to see how they [blank_start]evolved[blank_end]. A [blank_start]common[blank_end] ancestor is the most recent individual from which all organisms in a group are descended. Organisms with the most similar DNA have more [blank_start]recent[blank_end] common ancestors than those with [blank_start]less[blank_end] similar DNA.
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classified
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appearance
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accurate
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sequences
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similar
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evolved
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common
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recent
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less
Frage 9
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Biodiversity is the word used to describe the variety of living things in a habitat.
Frage 10
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Define 'Sustainability'.
Frage 11
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How can we improve sustainability?
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recycle more
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use products that need little energy to be produced
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use bio-degradable products
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conserve our finite resources
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use more electricity
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increase packaging