A brief introuduction to invertebrates

1. SCIENCE-THIRD PRIMARY YEAR
CEIP CORTES DE ARAGÓN
(Teacher: Miguel Navarro)

3. INVERTEBRATE GROUPSINVERTEBRATE GROUPS
- INVERTEBRATE ANIMALS ARE THOSE ANIMALS THAT DO
NOT HAVE A BACKBONE.
- WE CAN CLASSIFY INVERTEBRATES INTO 3 GROUPS:
ARTHROPODS (ARTRÓPODOS), MOLLUSCS (MOLUSCOS) AND
OTHER INVERTEBRATE GROUPS.

4. ARTHROPODSARTHROPODS
- THIS GROUP INCLUDES 4 SUBGROUPS: INSECTS,
ARACHNIDS, MYRIAPODS AND CRUSTACEANS
- THEY HAVE EXOSKELETON

5. 1.- INSECTS1.- INSECTS
- THERE ARE NEARLY ONE MILLION KNOWN SPECIES OF
INSECTS
- THEY HAVE EXOSKELETON, 2 ANTENNAE AND 6 LEGS
- MOST HAVE WINGS
- THEIR BODY HAS 3 SECTIONS: HEAD, THORAX AND
ABDOMEN
- EXAMPLES: WASP (AVISPA), BEE (ABEJA), LADYBIRD
(MARIQUITA), MOSQUITO, ANT (HORMIGA), MANTIS,
DRAGONFLY (LIBÉLULA) OR GRASSHOPPER (SALTAMONTES)

6. STUDY THE EXAMPLE OF THE PARTS OF INSECTS IN PAGE 86

7. 2.- ARACHNIDS2.- ARACHNIDS
- THEY HAVE EXOSKELETON, 8 LEGS AND 8 EYES
- THEIR BODY HAS 2 SECTIONS: HEAD AND ABDOMEN
- EXAMPLES: SCORPION AND SPIDER

8. 3.- MYRIAPODS3.- MYRIAPODS
- THEY HAVE EXOSKELETON, 2 ANTENNAE AND LOTS OF
LEGS
- THEIR BODY HAS LOTS OF SEGMENTS
- EXAMPLES: MILLIPEDE (MILPIÉS) AND CENTIPEDE
(CIEMPIÉS)

9. 4.- CRUSTACEANS4.- CRUSTACEANS
- THEY HAVE EXOSKELETON, 2 EYES AND 4 ANTENNAE
- MOST HAVE 8 LEGS AND 2 CLAWS
- EXAMPLES: LOBSTER (LANGOSTA) AND CRAB (CANGREJO)

10. 4.- CRUSTACEANS4.- CRUSTACEANS
- THEY HAVE EXOSKELETON, 2 EYES AND 4 ANTENNAE
- MOST HAVE 8 LEGS AND 2 CLAWS
- EXAMPLES: LOBSTER (LANGOSTA) AND CRAB (CANGREJO)