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Invertebrates (Molluscs (They do the three vital functions (Interaction:…
Invertebrates
Molluscs
They have bilateral symmetry and have a soft body
They do the three vital functions
Interaction: have a developed senses and brain
Reproduction: are oviparous and hermaphrodites.
Nutrition: have a digestive system.
Clasification
Gastropods
Bivales
Cephalopods
Worms
There are three types of worms
Platyhelmintes or flat worms
Are divited in rings
Reproduce sexually
Are parasites or aquatics free-livings
Annelids or ringed worms
They have a cilindrical body
They reproduce sexually and have cross-fertilization
There are bristles between metameres
Nematodes
Are free-livings
Have cylindrical body
Reproduce sexually and have separated sexes