Please enable JavaScript.
Coggle requires JavaScript to display documents.
INVERTEBRATES (MOLLUCS (Most parts of molluscs are aquatic (Bylateral…
INVERTEBRATES
MOLLUCS
Most parts of molluscs are aquatic
Bylateral symetry
They have a soft body
Their body is covered by a thick membrane called, the mantle
Vital functions
nutrition
the digestive sytem has a mouth
interaction
the have a well developed brain and sense organs
reproduction
most are hermaphrodites and oviparus
WHAT IS AN INVERTEBRATE
Animals without a back bone
Thet have the foolowing characteristics
Body plan symetry
They don´t have a sekeleton structure
PORIFERA AND CNIDARIA
Simple aquatic organisms
Porifera (sponges)
soponges feed by filtration
A sponge´s body is perforated by many tiny spores
The skeleton of some sponges is made up of a flexible material calles spongin
Cnidaria (polyps and jellyfish)
Jellyfish
They have an umbrella-shaped body
Polyps
They have a sac-like body
WORMS
They have in common: bylateral symetry and enlogated body withou a skeleton
Platyhelminthes
Nematodes
Annelids
ARTHROPODS
The main group pf arthropods are: arachnids, crustaceus, myriapods and insects
Incescts has a exoskeleton
They have segmented bodies div