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Sui Qu

on 27 May 2011

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Transcript of Centipedes

Existed 430 million years ago! Centipedes SBI3U Summative
Sui Qu Description Anatomy Evolution Definition: Basic Description Main predators
Largest terrestrial invertebrate predators
Important ecological role
8000 species, 52% are still unknown
Average lifespan: 5 years
Prey: Spiders, insects and worms
Predators: Toads, small mammals, and birds
Live in many diverse areas Definition: Physical Characteristics Segmented bodies with one pair of legs per segment
Brown and red colored segments
Yellowish-white segments
Size: 3 – 300 mm Anatomy: Head Head
Round/flattened head
Two pairs of maxillae
The first appendage has a pair of forcipules Anatomy: Senses Compound eyes are formed from ocelli,
Some have sense organs similar to antennae
The organs of Tömösvary are used for sensing vibrations and hearing Anatomy: Body Fifteen or more segments
Final two segments are small, with no legs
Each pair of legs is longer than the one before it
Openings of the reproductive organs are located in the final segment
Leg number: 20 - 300 Anatomy: Internal Three germ layers
Bilaterally symmetrical
Complete digestive tract and system
Breathe via the tracheal system Evolution Thanks for your time! Kingdom Animalia Phylum Arthropoda Subphylum Myriapoda Class Chilopoda In conclusion... Anatomy: Senses
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