Ocean Invertebrates

Invertebrates - Second Grade

by Dwi Febriana

What are invertebrates?​

Invertebrates are animals that do not have backbones, also called vertebrae or spinal bones.​

​Praying mantis

Multiple Choice

Over 96% of all the animal species on Earth are invertebrates.

• YES 

• NO

Multiple Choice

Insects are over 1 millions species on Earth.

• YES 

• NO

Multiple Choice

There are likely millions of invertebrates living in your house right now.

• TRUE

• FALSE

Do you know how to classify The Invertebrates? (1/2)

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​1. Many Invertebrates filled by fluid, for example Jellyfish and worms

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Do you know how to classify The Invertebrates? (2/2)

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2. Other invertebrates have a hard shell covering their body-think about crabs and snails.

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Several invertebrates have Body symmetry~

Do you think you can make your own ​

INVERTEBRATES CLASSIFICATION KEYS ?

THINK IN 1 MINUTE...

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Multiple Select

Invertebrates are divided into these groups

• Gastropods, molluscs, annelids, cnidarian

• Arthropods, Equinoderms, Molluscs, Sponges

• Arthropods, Molluscs, Equinoderms, Sponges, Annelids, Cnidarians

INVERTEBRATES GROUP

​Cnidarians or Coelenterates

​Sponges

​Nematods

​Mollusks

​Echinoderms

​Arthropods

Multiple Choice

Sponges live on land

• True

• False

​Cnidarians or Coelenterates

​Jellyfish Sea Anemones Corals

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​A cnidarian has only one opening that serves two purposes: to take in food and expel waste.

WORMS

​different kinds of worms are gathered into three groups: flatworms, roundworms, and segmented worms

​Flatworms Roundworms Segmented Worms

MOLLUSKS

​They all are soft-bodied with some form of covering or mantle.

​mollusks that live under water have specialized gills that take oxygen out of the water and put it into their blood.

ECHINODERMS

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Echinoderm means "spiny skinned" have hard outer plates. These plates usually cover a body that has five separate parts like the spokes of a wheel.

ARTHROPODS

​They all are soft-bodied with some form of covering or mantle.

​​Arthropods are so varied that there are five major types: crustaceans (lobsters, crabs); arachnids (spiders, ticks, mites); insects (bees, ants, beetles); centipedes; and millipedes.

Multiple Choice

Starfish is one of Echinoderms (part of Invertebrates). 

Did they have head?

• YES 

• NO

Multiple Select

Choose the invertebrates.

Multiple Choice

Invertebrates have got a backbone

• True

• False

Multiple Choice

Starfish have got a spiky body and 5 arms

• True

• False

Multiple Choice

• Crustacean

• Insects

• Arachnid

• Myriapod

Multiple Choice

Crustacean have got

• 6 legs

• 8 legs

• No legs

• 10 legs

Multiple Choice

What type of symmetry does the organism have?

• Asymmetrical

• Radial

• Bilateral

Multiple Choice

Arthropods has 2 or more ____________ of its body.

• tentacles

• sections

• arms

• legs

Multiple Choice

What type of symmetry does the organism have?

• Asymmetrical

• Radial

• Bilateral

Multiple Choice

What type of symmetry does the organism have?

• Asymmetrical

• Radial

• Bilateral

Multiple Choice

What type of symmetry does the organism have?

• Asymmetrical

• Radial

• Bilateral

Multiple Choice

If you touch the tentacles of the _____ it stings you!

• Ant

• Jellyfish

• Octopus

• Scorpion 

Multiple Choice

How many limbs does an octopus have?

• 4

• 2

• 8

Multiple Choice

Do earthworms have legs ?

• no

• yes

Multiple Choice

______________ have soft tube like bodies and live in water, in soil, or even in other animals.

• tentacles

• Octopus

• sponges

• worms

Multiple Choice

This is a...

• Vertebrate

• Invertebrate