miércoles, 15 de octubre de 2014

INVERTEBRATES

 
INVERTEBRATES

-they don`t have a backbone or an internal skeleton.
- most invertebrates lay eggs.
-Invertebrates can be classified into six groups: arthopods,molluscs,sponges,cnidarians,echinoderms and annelids.

(By Marthin, 5th grade)

1.-ARTHROPODS  


*ARTHROPODS HAVE AN EXTERNAL SKELETON CALLED

 AN EXOSKELETON.

*ARE DIVIDED INTO 4 GROUPS:
                                    (By Lucía, 5th grade)
INSECTS

INSECTS
  • HAVE 3 PARTS:

  1. A HEADInsect Body Sections Head Thorax and Abdomen
  2. A THORAX
  3. AN ABDOMEN

  • HAVE 1 OR 2 PAIRS OF WINGS.
  • HAVE 1 PAIR OF ANTENNAE.
  • HAVE 3 PAIRS OF LEGS.
  • CAN LIVE ON LAND/IN WATER.
  • SOME INSECTS CAN FLY.

(Created by Alejandro,5th grade)



ARACHNIDS

ARACHNIDS
-HAVE 2 BODY PARTS
-HAVE 4 PAIRS OF LEGS
-HAVE 8 EYES
-LIVE ON LAND
-SPIDERS, SCORPIONS…
                                                           (By David and Jesús, 5th grade)

Body sections of an arachnid or spider
1.- Four pairs of legs.
2.- Cephalothorax.
3.- Abdomen.

CRUSTACEANS


MYRIAPODS





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