BIOLOGY
MRS GREENHALGH KACY
Unit 1. CHARACTERISTICS & CLASSIFICATIONS OF LIVING SYSTEMS
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REVISION
In pairs. 10 minutes
Describe the characteristics of living organisms
Define the characteristics of living organisms
Acronym Mrs Gren
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FEATURES OF ORGANISMS
All cells of living organisms are made up of 4 features
What about viruses?
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FEATURES OF ORGANISMS
Biologists classify organisms into 5 large groups (kingdoms)
se your hand to not distract lecture
Kingdom
What kingdom do viruses belong to?
Defining features
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VERTEBRATES & INVERTEBRATES
Animal kingdom is divided into 2 phyla: Vertebrates and Invertebrates
Vertebrates
5 groups:
Invertebrates
Arthropods = largest group
4 types of arthropods:
What are the features exhibited by all vertebrates? What are the features exhibited by all arthropods?
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FERNS & FLOWERING PLANTS
Ferns
Flowering plants
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DICHOTOMOUS KEYS
Scientists use dichotomous keys to identify living things. Dichotomous means dividing in two
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SUMMARY : UNIT 1
In order to identify living organisms (eg. Earthworms) 7 characteristics are used
Classification is the sorting system for living organisms according to common features
To avoid confusion, the binomial system (‘two name system’) is used
All living organisms share common features: Cell membrane, cytoplasm, DNA,
ribosome
5 kingdoms
Animal kingdom is divided into 2 phyla: Vertebrates and Invertebrates
Flowering plants can be divided into 2 main groups: Dicotyledons (Dicots) &
monocotyledons (Monocots)
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🎯ASSIGNMENT: VERTEBRATES
5 main groups of vertebrates exist
Vertebrates
Defining features
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🎯ASSIGNMENT: INVERTEBRATES
4 types of Arthropods
Arthropods
Body
Segments
Number of legs
Antennae
Wings
Insects
Arachnids
Crustaceans
Myriapods
State three features that all arthropods share
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