Page 144 - Knowledge Organiser Yr8 24-25

Knowledge Base: Science 8.9 Ecosystems Year 8
1. Biodiversity and Classification
1.1
What is a species?
A group of organisms that can interbreed to have fertile offspring
2. Biodiversity Survey : Collecting data
2.1
What is sampling?
A type of scientific surveying that looks at a section of the population of an organism to make an estimate.
2.2
What is a quadrat?
A square frame used for sampling
2.3
Give three uses of a quadrat
1. Count the number of a single species
2. Count the number of different species
3. Count the percentage of a quadrat taken up by one species
2.4
What type of sampling is a quadrat normally used for?
Random or systematic sampling of plants.
2.5
What other equipment can be used for sampling?
Sweep nets, pitfall traps and pooters
1.2 What is biodiversity?
1.4 What are the five kingdoms?
1.6 What are the five classes of vertebrates
1.8 State which class of vertebrate have feathers and lay eggs
1.9 State which class of vertebrate have dry scales and lay eggs
1.13 What 2 groups can be plants be divided into?
1.14 What 3 characteristics can be used to identify plants
A measure of the range of living organisms within a habitat
Animals, plants, fungi, protists, prokaryotes
Mammals, birds, reptiles, amphibians, fish
Bird Reptiles
Those with seeds and those without seeds Seeds, Flowers, Leaves
1.3
Why do scientists classify organisms?
To understand the characteristics organisms have in common and the relationship between different organisms.
1.5
Give an example of an organism in each of the five kingdoms
Animals (cat) Plants (all green plants) Fungi (moulds, mushrooms, yeast) Protists (amoeba, chlorella and plasmodium) Prokaryotes (Bacteria, Blue-green algae)
1.7
State which class of vertebrate have fur and young that feed on milk
Mammals
1.10
State which class of vertebrate have smooth moist skin and lay eggs without shells in water
Amphibians
1.11
State which class of vertebrate have wet scales, gills and lay eggs without shells
Fish
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