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Spineless Animals
Invertebrates
Sponges
 Sponge is the simplest kind
of an invertebrate.
 Shaped like a sack with an
opening at the top
 It’s body is m...
Mollusks
 Mollusks are an invertebrate that has a soft body and a
shell
 Most live in water, snails and slugs live on la...
Cnidarian
 A cnidarians (nye-DAYR-ee-uhn) is an animal
with arm like parts called tentacles.
 Sting their prey with stin...
arthropods
 Arthropods have jointed legs and a body that is
divided into sections.
 Largest group of invertebrate
 Have...
insects
 1 pair of antennae
 3 pairs of legs
 1-2 pairs of wings
 3 body sections
arachnids
 4-5 pairs of legs
 2 body sections
 fangs
centipedes/millipedes
 Centipedes have 1 pair of legs on each body
section
 Millipedes have 2 pair of legs on each body
...
crustaceans
 2 pair of antennae
 2-3 body sections
 They can chew
flatworm
 Flat bodies, head and a tail
 Most are harmless
 Some live inside the bodies of other animals
roundworms
 Thin bodies with pointed ends
 One way digestion system
 Most roundworms live inside the bodies of other
an...
Segmented worms
 Bodies have 3 layers and divided into segments
 Have a head and tail- both have an opening to the
diges...
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Invertebrates slide show

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Transcript of "Invertebrates slide show"

  1. 1. Spineless Animals Invertebrates
  2. 2. Sponges  Sponge is the simplest kind of an invertebrate.  Shaped like a sack with an opening at the top  It’s body is made of 2 cell layers  Body is hollow inside  Live in water  Adults stay in one place, their kids float around
  3. 3. Mollusks  Mollusks are an invertebrate that has a soft body and a shell  Most live in water, snails and slugs live on land  Some stay in one place, others float.  Shells are sometimes inside their bodies.
  4. 4. Cnidarian  A cnidarians (nye-DAYR-ee-uhn) is an animal with arm like parts called tentacles.  Sting their prey with stinging tentacles  Some stay in one place, others float around
  5. 5. arthropods  Arthropods have jointed legs and a body that is divided into sections.  Largest group of invertebrate  Have exoskeleton, hard cover protects the body  4 major groups: insects, arachnids, crustaceans, centipedes/millipedes
  6. 6. insects  1 pair of antennae  3 pairs of legs  1-2 pairs of wings  3 body sections
  7. 7. arachnids  4-5 pairs of legs  2 body sections  fangs
  8. 8. centipedes/millipedes  Centipedes have 1 pair of legs on each body section  Millipedes have 2 pair of legs on each body section
  9. 9. crustaceans  2 pair of antennae  2-3 body sections  They can chew
  10. 10. flatworm  Flat bodies, head and a tail  Most are harmless  Some live inside the bodies of other animals
  11. 11. roundworms  Thin bodies with pointed ends  One way digestion system  Most roundworms live inside the bodies of other animals
  12. 12. Segmented worms  Bodies have 3 layers and divided into segments  Have a head and tail- both have an opening to the digestion system  Only live on land- none live inside an animal’s body
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