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Invertebrates Arthropods classes
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InvertebratesArthropods classes
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Objectives● to differentiate invertebrates from vertebrates
● to differentiate different classes of arthropods
● to understadn the importance of metamorphosis
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Invertebrates (беспозвоночные)● No backbone
● Classification characteristic
○ they have legs or not
● Arthropods (членистоногие)
○ all invertebrates with jointed legs
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Terminologyjointed
соединённый
sense
чувствовать
antennae
антенна
mouthpart
ротовой аппарат
legs
ноги
head
голова
thorax
грудь
abdomen
брюшко
compound eyes
фасеточные/сложные глаза
jaws
челюсть
claws
клешня
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Myriapods (многоножки)● Many segments on body
● Flexible movement
● Mouthparts
● Biting
● Legs at each segment
● Walking
● Hard exoskeleton
● protection
● Antennae
● Sense dark and moist
environment
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Insects (насекомые)● 3 body parts
● Head
● Thorax
● Abdomen
● Compound eye
● Mouthparts
● Different for feeding
● Wings
● 2 pairs
● Antennae
● Sense chemicals in environment
● Metamorphosis
● Jointed legs
● 3 pairs in thorax
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3 Body parts13.
Compound eye14.
Butterfly - бабочка15.
Ladybug16.
Dragonfly - стрекоза17.
What is Metamorphosis?https://www.youtube.com/watch?v=kVm5k99PnBk
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Metamorphosis● Change of body form
● Have different stages
● Do not compete for food
● Specialized for different functions
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MetamorphosisEgg (яйца)
Larva (гусеница)
Pupa (куколка)
Adult (имаго)
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Arachnids (паукообразные)● 2 body parts
● Cephalothorax (head + thorax)
● Abdomen
● Powerful, piercing jaws
● Predators
● More than one eye
● Detect pray
● No antennae
● Jointed legs
● 4 pair
● Chase and hold prey
● Spinneret
● Produce long and thin silk
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Spinneret(прядильный орган)
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Powerful, piercing jaws23.
Spider - паук24.
Tick - клещ25.
Scorpion - cкорпион26.
Crustaceans (ракообразные)● Jointed legs
● More than 4 pair
● Eyes
● sense in aquatic environment
● Gills
● Breath in water
● Claw
● Hold and break shells of mollusks