Lost your password? Please enter your email address. You will receive a link and will create a new password via email.
Please briefly explain why you feel this question should be reported.
Please briefly explain why you feel this answer should be reported.
Please briefly explain why you feel this user should be reported.
What are some representatives of the phylum Mollusca?
Snails, octopuses, squids and oysters are examples of molluscs.
Snails, octopuses, squids and oysters are examples of molluscs.
See lessWhat type of exoskeleton do some molluscs present?
Some molluscs, like bivalves and gastropods, secrete an external calcareous carapace (the shell). Calcium carbonate is secreted by the mantle, a fold in the epidermis, forming the shell.In pelecypods, the shell is made of two valves that articulate and contain the individual body within. In gastropoRead more
Some molluscs, like bivalves and gastropods, secrete an external calcareous carapace (the shell). Calcium carbonate is secreted by the mantle, a fold in the epidermis, forming the shell.
In pelecypods, the shell is made of two valves that articulate and contain the individual body within. In gastropods the shell contains only part of the body, the visceral mass.
See lessWhich other phylum of the animal kingdom present species with exoskeleton?
Arthropods present exoskeleton made of chitin. Echinoderms do not have exoskeleton but they present a calcareous endoskeleton. Some chordates also have an external carapace.
Arthropods present exoskeleton made of chitin. Echinoderms do not have exoskeleton but they present a calcareous endoskeleton. Some chordates also have an external carapace.
See lessHow is the nervous system of molluscs organized?
Molluscs have well-developed sensory structures. It is accepted that cephalopods, like octopus and squid, have eyes with image formation. Snails have antennae and a pair of welldefined eyes. Bivalves do not present eyes but they have photosensitive and tactile cells.Cephalization is evident in molluRead more
Molluscs have well-developed sensory structures. It is accepted that cephalopods, like octopus and squid, have eyes with image formation. Snails have antennae and a pair of welldefined eyes. Bivalves do not present eyes but they have photosensitive and tactile cells.
Cephalization is evident in molluscs and neurons concentrate in a ganglial pattern.
See lessIn which habitats do molluscs live?
Molluscs can be found in the sea, freshwater and in terrestrial environments.
Molluscs can be found in the sea, freshwater and in terrestrial environments.
See lessHow is the respiratory system in aquatic molluscs characterized? What adaptive respiratory structure do terrestrial molluscs present?
Aquatic molluscs oxygenate their blood through gills in direct contact with water. In terrestrial molluscs the rich vascularity under the mantle cavity absorbs air doing the role of a primitive lung.
Aquatic molluscs oxygenate their blood through gills in direct contact with water. In terrestrial molluscs the rich vascularity under the mantle cavity absorbs air doing the role of a primitive lung.
See lessHow is the large size of some cephalopods related to the type of circulatory system they present?
In cephalopods the circulatory system is closed and this provides more speed and pressure for the blood circulation allowing the existence of species with large bodies, like octopuses and giant squids.
In cephalopods the circulatory system is closed and this provides more speed and pressure for the blood circulation allowing the existence of species with large bodies, like octopuses and giant squids.
See lessWhat is the function of the feet in molluscs? How is the mollusc foot related to the name given to the classes of the phylum?
The mollusc foot has the function of locomotion, support, fixation, digging in the environment and sometimes of holding prey.The terminations of the names given to the main mollusc classes come from the Greek word “podos” that means foot. Gastropods have feet in their ventral region (as the name indRead more
The mollusc foot has the function of locomotion, support, fixation, digging in the environment and sometimes of holding prey.
The terminations of the names given to the main mollusc classes come from the Greek word “podos” that means foot. Gastropods have feet in their ventral region (as the name indicates); pelecypods have ax-shaped feet (ax in Greek is “pelekys”); in cephalopods the feet are near the head.
See lessInto which classes are mollusc divided? What are some representing beings of each class?
The phylum Mollusca is divided into five main classes: pelecypods, or bivalves (Pelecypoda, or Bivalvia), includes oysters, clams, mussels; gastropods (Gastropoda), snails, sea slugs; cephalopods (Cephalopoda), squids, octopuses; scaphopods (Scaphopoda), tooth shells; Polyplacophora, chitons. ThereRead more
The phylum Mollusca is divided into five main classes: pelecypods, or bivalves (Pelecypoda, or Bivalvia), includes oysters, clams, mussels; gastropods (Gastropoda), snails, sea slugs; cephalopods (Cephalopoda), squids, octopuses; scaphopods (Scaphopoda), tooth shells; Polyplacophora, chitons. There are a few other mollusc classes.
See lessDo octopus and squids have exoskeleton?
Octopus and squids generally do not produce external shell (some squid species can have an internal shell). One cephalopod group, the nautiluses, produces an external spiral shell.
Octopus and squids generally do not produce external shell (some squid species can have an internal shell). One cephalopod group, the nautiluses, produces an external spiral shell.
See less