MOLLUSK, ECHINODERMS, ANNELIDS by andrea samaria alvarez suazo https://padlet.com/andreasamaria/nqzqthy4z6h6wsc WRITE THE MAIN CHARACTERISTICS AND CLASSIFICATIONS en-us 2021-04-12 14:32:22 UTC 2021-06-01 14:48:23 UTC hello@padlet.com HI STUDENTS andreasamaria https://padlet.com/andreasamaria/nqzqthy4z6h6wsc/wish/1469029670 REMEMBER TO WRITE YOUR NAME
WRITE MAIN CHARACTERISTICS AND CLASSIFICATION OF MOLLUSK ECHINODERMS AND ANNELIDS

]]> 2021-04-28 13:38:23 UTC https://padlet.com/andreasamaria/nqzqthy4z6h6wsc/wish/1469029670 Main Characteristics and Classifications of Mollusk, Echinoderms and Annelids. https://padlet.com/andreasamaria/nqzqthy4z6h6wsc/wish/1469051164 Jose Aparicio
Mollusks
  • mollusks are the largest group of animals on Earth
  • Mollusks have a skin like organ that covers the visceral hump, this is called mantle
  • Mollusks are distinguished by a muscular foot
Classifications of Mollusks
  • Bivalves 
  • gastropods
  • cephalopods

Echinoderms
  • They are the only animal with a water vascular system
  • They have a central disk from which flexible arms, or rays, radiate.
  • Thay are all animals and have spines that grow from a mechlike internal skeleton made of calcium carbonate

Classification of Echinodermata
  • Crinoidea 
  • Asteroidea 
  • Ophiuroidea 
  • Echinoidea 
  • Holothuroidea 

Annelids
  • They have cylindrical bodies that are divided into many consecutives ringlike segments  
  • Most of them have rows of external bristles attached to each segment 
  • Inside them, each segment is separated from the next by a dividing wall septum

Classification of Annelids
  • Earthworms 
  • Sea worms 
  • Leeches
]]> 2021-04-28 13:42:28 UTC https://padlet.com/andreasamaria/nqzqthy4z6h6wsc/wish/1469051164 MOLLUSK, ECHINODERMS, ANELIDS tammie027 https://padlet.com/andreasamaria/nqzqthy4z6h6wsc/wish/1469059252 Mi Xia Tan Chen - 10A
Characteristics of Mollusks
  • They exhibit organ system level of organization
  • Their body has a cavity
  • The muscular foot helps in locomotion
Classification of Mollusks
  • Gastropod
  • Bivalvia 
  • Cephalopodan 
  • Scaphopoda 
  • Polyplacophoran

Characteristics of Echinoderms
  • They are exclusively marine animals
  • The organisms are spiny-skinned
  • They exhibit organ level of organization

Classification of Echinoderms
  • Crinoidea
  • Asteroidea
  • Ophiuroidea
  • Echinoidea
  • Holothuroidea

Characteristic of Annelids
  • Their body is segmented
  • They respire through their body surface
  • Nephridia are the excretory organs

Classification of Annelids
  • Earthworms
  • Sea worms
  • Leeches
]]> 2021-04-28 13:44:02 UTC https://padlet.com/andreasamaria/nqzqthy4z6h6wsc/wish/1469059252 mollusks echinoderms, and annelids. melvinpineda2417 https://padlet.com/andreasamaria/nqzqthy4z6h6wsc/wish/1469187633 characteristics of mollusk echinoderms. 
-they are tripoblastic organism 
-they have a hemocoel while echinoderms have  a coelom. 
classification of mollusks. 

]]> 2021-04-28 14:08:32 UTC https://padlet.com/andreasamaria/nqzqthy4z6h6wsc/wish/1469187633 Mollusk, Annelids, Echinoderms andrebarahonag24 https://padlet.com/andreasamaria/nqzqthy4z6h6wsc/wish/1469400842 Edgardo Barahona
Mollusks Characteristics
-They are mostly found in marine and freshwater. Very few are terrestrial and found in moist soil.
- Their body has a cavity.
- The body is covered by a calcareous shell.
- The blood circulates through the open circulatory system.
Mollusk Classification
- Aplacophora
- Monoplacophora
- Polyplacophora
- Bivalvia
-Gastropoda
- Cephalopoda
- Scaphopoda

Annelids Characteristics
- They are coelomate and triploblastic.
- They exhibit organ system level organization.
- They respire through their body surface.
- Regeneration is a very common characteristic of the Annelids.
Annelids Classification
- Polychaeta
- Oligochaeta
- Hirudinea
- Archiannelida

Echinoderms Characteristics
-They have a star-like appearance and are spherical or elongated.
- They are exclusively marine animals.
- They exhibit organ level of organization.
- They are triploblastic and have a coelomic cavity.
- They have an open circulatory system.
Echinoderms Classification
- Crinoidea
- Asteroidea
- Ophiuroidea
- Echinoidea
- Holothuroidea .






















]]> 2021-04-28 14:48:31 UTC https://padlet.com/andreasamaria/nqzqthy4z6h6wsc/wish/1469400842 Mollusk, Echinoderms, Annelids https://padlet.com/andreasamaria/nqzqthy4z6h6wsc/wish/1471915036 Grecia Melgar
Characteristics of Mollusks
  • Most of the mollusks live in water but some live on land.
  • They use the ventral muscular foot for locomotion.
  •  Usually they have an external or internal shell. 

Classification of Mollusks
  • Gastropods
  • Bivalvia
  • Scaphopoda
  • Polyplacophoran
  • Cephalopoda

Characteristics of Echinoderms
  • Echinoderms exhibit a great diversity of body forms, especially among the extinct groups.
  • All existing echinoderms are marine.
  • Some of them have small hair-like spines, like the starfish.

Classification of Echinoderms
  • Crinoidea.
  • Asteroidea.
  • Ophiuroidea.
  • Echinoidea.
  • Holothuroidea

Characteristics of Annelids
  • Annelids have a soft, moist body wall through which they breathe.
  • Their body is composed of rings or segments.
  • The digestive system is complete and developed.

Classification of Annelids
  • Polychaeta
  • Oligochaeta
  • Hirudinea
  • Archiannelida

]]> 2021-04-29 02:48:08 UTC https://padlet.com/andreasamaria/nqzqthy4z6h6wsc/wish/1471915036 MOLLUSK, ECHINODERMS, AND ANNELIDS. https://padlet.com/andreasamaria/nqzqthy4z6h6wsc/wish/1471916398 MARCELA LEVERÓN
10TH
CHARACTERISTICS OF MOLLUSKS:
  • Unsegmented soft body with bilateral symmetry.
  • Presence of an internal or external shell.
  • A mantle which is a fold in the body wall that lines the shell.

CLASSIFICATION:
  • Gastropoda 
  • Bivalvia
  • Aplacophora
  • Polyplacophora
  • Scaphopoda

CHARACTERISTICS OF ECHINODERMS: 
  • They have a star-like appearance and are spherical or elongated.
  • The organisms are spiny-skinned.
  • The skeleton is made up of calcium carbonate.

CLASSIFICATION: 
  • Asteroidea
  • Ophiuroidea
  • Echinoidea
  • Holothuroidea
  • Crinoidea

CHARACTERISTICS OF ANNELIDS: 
  • They have homonomous metamerically segmented body.
  • They are mostly aquatic but some are terrestrial.
  • They have red colored body due to the presence of haemoglobin in blood.

CLASSIFICATION:
  • Polychaeta
  • Oligochaeta
  • Hirudinea
]]> 2021-04-29 02:48:41 UTC https://padlet.com/andreasamaria/nqzqthy4z6h6wsc/wish/1471916398 Mollusks, Echinoderms, Annelids https://padlet.com/andreasamaria/nqzqthy4z6h6wsc/wish/1576453583 David Huang Situ

MOLLUSKS:
Characteristic:
- They are mostly found in marine and freshwater.
- They exhibit organ system level of organization.
- The head is composed of antennae and compound eyes.

Classification:
- Gastropods
- Bivalves
- Cephalopods

ECHINODERMS:
Characteristic:
- They have a star-like appearance and are spherical or elongated.
- They are exclusively marine animals.
- The organisms are spiny-skinned.

Classification:
- Crinoidea
- Asteroidea
- Ophiuroidea
- Echinoidea
- Holothuroidea

ANNELIDS:
Characteristic:
- The Annelids are coelomate and triploblastic.
- They exhibit organ system level organization.
- Their body is segmented.

Classification:
- Earthworm
- Leeches
- Lugworms
-Polychaetes]]> 2021-06-01 14:32:08 UTC https://padlet.com/andreasamaria/nqzqthy4z6h6wsc/wish/1576453583