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hi everyone welcome to our lesson 2 about invertebrates there are six

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groups of invertebrates but in this video we are going to practice two

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groups the arthropods and the mollusks mirror word arthropods mollusks so these

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are the other groups okay let's start with group one arthropods arthropods have a segmented body

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and limbs arthropods have an exhaust skeleton it is an external protection or armor

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Mirror word, group one, arthropods.

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Arthropods have a segmented body and limbs.

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Arthropods have an exoskeleton.

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It is an external protection or armor.

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Arthropods, one.

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Insects.

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Insects, like bees, are arthropods.

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They have head.

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They have thorax.

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they have abdomen they have six legs six legs

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two antenna antenna yeah and wings

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mirror word arthropods one insects

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Insects, like bees, are arthropods.

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They have head, they have thorax, they have abdomen, they have six legs, and two antennae.

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Arthropods too. Arachnids. Arachnids, like spiders, are arthropods. They have head and

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thorax. They have abdomen. They have eight legs. Mirror word. Arthropods. Two. Arachnids.

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Arachnids, like spiders, are arthropods.

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One, they have head and thorax.

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Two, they have abdomen.

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Three, they have eight legs.

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Arthropods

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Three

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Crustaceans

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Crustaceans

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Like crabs

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Are arthropods

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Number one

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They have two eyes

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Number two

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Four antenna

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Three

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Two claws

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Four. Eight. Legs. Five. Carapace or shell. Mirror word. Arthropods. Arthropods. Three.

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Crustaceans. Crustaceans, like crabs, are arthropods. They have two eyes, four antennae, two claws, eight legs, and carapace, or shell.

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Arthropods 4. Myriapods. Myriapods, like centipedes, are arthropods. They have two antennae, segments,

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POTS OF LEGS

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Mirror word

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Arthropods for

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Myriapods

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Myriapods, like centipedes,

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are arthropods.

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Two antenna

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segments body and lots of legs

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group two mollusks mollusks have a soft body some mollusk like slugs or snail have a shell

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for protection other mollusks like octopuses have tentacles mirrored mollusks have a soft

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body. Some mollusks like slugs or snail have a shell for protection. Other

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mollusks like octopuses have tentacles okay let's see more descriptions about

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group two mollusks mollusk have soft so gastropods cephalopods and bivalves

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So, for gastropods, they have two antennae with eyes.

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Some have a shell for protection.

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They can live on land or in water.

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For celophods, they have a large head with tentacles.

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Some have a shell for protection.

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They live in water.

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Some use camouflage.

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So, for bivalves, some have two shells for protection.

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They live in water.

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Mirror word.

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Group two, mollusks.

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Mollusks have soft body. Gastropods, they have two eyes and, oh sorry, they have two antennae with eyes.

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Some have a shell for protection. They can live on land or in water.

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Cephalopods. They have a large head with tentacles.

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Some have a shell for protection.

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They live in water.

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Some use camouflage.

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Bivalves.

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Some have two shells for protection.

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They live in water.

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Okay, this time, let's have some quick quiz game, yeah?

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So, you figure out if it's anthropod or mollusk.

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Spider, what do you think?

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Are spiders arthropods or mollusks?

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They are arthropods.

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How about snails?

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oh snails they are mollusks how about beetles okay they are arthropods

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how about oh okay octopus okay it's there mollusks because they are cephalopods

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how about butterfly

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okay they are arthropods how about crabs okay they are arthropods how about squids okay they

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are mollusk and they are cephalopods how about seahorse okay fish vertebrates vertebrates how

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scorpions okay they are arthropods and how about oyster they are mollusks and

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they are bivalves okay that's it for our practice and see you soon