Natural Science Unit 3 "Invertebrates"

Natural Science: Part II

INVERTEBRATES

Presentation by teacher Mario

INDEX

Characteristics

Summary

Types of Invertebrates

Characteristics

CHARACTERISTICS

• The invertebrates animals has NO SKELETON.
• The invertebrates are OVIPAROUS

Types of Invertebrates

Types of Invertebrates

There are 5 different types of invertebrate animals:

Echinoderms

Cnidarians

Artrhopods

Worms

Molluscs

ARTHROPODS

• Artrhopods are the BIGGEST group of invertebrates.
• Their body are divided in 3 parts: ABDOMEN, HEAD and THORAX.
• Artrhopods have a HARD SKIN and JOINTS in their legs.

Ant

Bee

Spider

Scorpion

JOINTS: ARTICULACIONES HARD SKIN: PIEL DURA

Fly

Crab

ECHINODERMS

• Echinoderms have a million FEET to move.
• Echinoderms bodies have HARD PARTS.
• Echinoderms live in SALT WATER.
• Echinoderms have SPINES.

Sea Urchin

Starfish

FEET: PIES HARD PARTS: PARTES DURAS SPINES: ESPINAS

Cnidarians

• Cnidarians live in WATER.
• Cnidarians have SOFT BODIES.
• Cnidarians have TENTACLES that help them to eat and give them protection.

Anemone

Jellyfish

SOFT BODIES: CUERPOS BLANDOS

WORMS

• Worms have a LONG SOFT BODY divided into RINGS.
• Worms live in LAND and others live in WATER.

Earthworm

RINGS: ANILLOS LONG: LARGO

MOLLUSCS

• Molluscs have a SOFT BODY and MUSCULAR body.
• Most of them have SHELLS. -1 shell: SNAIL (caracol)-2 shells: MUSSEL (mejillón) -Intern shell: OCTOPUS (pulpo)

Mussel

Snail

Octopus

SHELL: caparazón

SUMMARY

SUMMARY

ANIMALS

Invertebrates

Vertebrates

Amphibians

Fish

Mammals

Birds

Molluscs

Worms

Echinoderms

Cnidarians

Reptiles

Arthropods

Thank you!