Lecture 08, molluscs 1, simplified - Cal State LA
... - first a 90o twist, done by foot retractor muscle - second 90o twist by differential tissue growth on the 2 sides Combined with spiral shells, led to reduction or loss of organs on right side of adult body (ctenidium, atrium, nephridium) - sole exception is the gonad, which remains on the right (we ...
... - first a 90o twist, done by foot retractor muscle - second 90o twist by differential tissue growth on the 2 sides Combined with spiral shells, led to reduction or loss of organs on right side of adult body (ctenidium, atrium, nephridium) - sole exception is the gonad, which remains on the right (we ...
Mollusks have a soft body and share several characteristics
... The visceral mass is present above the foot in the visceral hump. This includes digestive, nervous, excretory, reproductive, and respiratory systems. Mollusk species that are exclusively aquatic have gills for respiration, whereas some terrestrial species have lungs for respiration. Additionally, a ...
... The visceral mass is present above the foot in the visceral hump. This includes digestive, nervous, excretory, reproductive, and respiratory systems. Mollusk species that are exclusively aquatic have gills for respiration, whereas some terrestrial species have lungs for respiration. Additionally, a ...
Invertebrates - Hartsville High School
... • Spend most of their life as polyps • Solitary or colonial • Ex: Portuguese man-of-war – Tentacles up to 165 ft long – Venomous tentacles ...
... • Spend most of their life as polyps • Solitary or colonial • Ex: Portuguese man-of-war – Tentacles up to 165 ft long – Venomous tentacles ...
Mollusks and Echinoderms
... through a series of internal body canals. The water is used to inflate some of the tube feet, causing them to expand. In many species, the tube feet are equipped with suckers that grip onto the sea floor. The feet hold tight to the bottom as muscles within the feet contract, enabling the animal to p ...
... through a series of internal body canals. The water is used to inflate some of the tube feet, causing them to expand. In many species, the tube feet are equipped with suckers that grip onto the sea floor. The feet hold tight to the bottom as muscles within the feet contract, enabling the animal to p ...
PHYLUM ANNELIDA The Segmented Worms. There are
... environments, the worms cannot be removed from moisture for an extended period of time or they will dry up. Annelids are either herbivores or carnivores. The earthworms, for example, feed upon organic matter in the mud, while many of the marine forms are active hunters. The leeches are ectoparasites ...
... environments, the worms cannot be removed from moisture for an extended period of time or they will dry up. Annelids are either herbivores or carnivores. The earthworms, for example, feed upon organic matter in the mud, while many of the marine forms are active hunters. The leeches are ectoparasites ...
Mollusks
... slugs. Gastropods have a single external shell or no shell at all. Gastropods can live nearly everywhere on Earth. Some gastropods are herbivores. Still others are carnivores. All have an organ called a radula (plural radulae), a flexible ribbon of tiny teeth. Gastropods usually creep along on a bro ...
... slugs. Gastropods have a single external shell or no shell at all. Gastropods can live nearly everywhere on Earth. Some gastropods are herbivores. Still others are carnivores. All have an organ called a radula (plural radulae), a flexible ribbon of tiny teeth. Gastropods usually creep along on a bro ...
Squidology for Pdfing - Louisiana Marine Education Resources
... have the ability to jet propel their bodies through the water at 20 miles per hour, faster than the common sailing ships of the past. Some squid can launch themselves out of the water while traveling at such high speeds, making them appear to be flying monsters. Such a sight would prove to be unnerv ...
... have the ability to jet propel their bodies through the water at 20 miles per hour, faster than the common sailing ships of the past. Some squid can launch themselves out of the water while traveling at such high speeds, making them appear to be flying monsters. Such a sight would prove to be unnerv ...
notes
... thin layer of tissue called a mantle that covers internal organs (mantle produces shell) most move with a muscular structure called a foot (also used for digging or catching prey); live nearly everywhere; most live in water Bilateral symmetry; internal organs; most water-dwelling have gills; m ...
... thin layer of tissue called a mantle that covers internal organs (mantle produces shell) most move with a muscular structure called a foot (also used for digging or catching prey); live nearly everywhere; most live in water Bilateral symmetry; internal organs; most water-dwelling have gills; m ...
MOLLUSC LABORATORY Class Scaphopoda Representative for
... important sense organs are the aesthetes and are found in groups in the shell. In some species, these organs are modified to form eyes. Within this simple "head", the radula is found. The radula is a stiplike structure that is used for feeding. This organ scrapes algae, diatoms, and other plant food ...
... important sense organs are the aesthetes and are found in groups in the shell. In some species, these organs are modified to form eyes. Within this simple "head", the radula is found. The radula is a stiplike structure that is used for feeding. This organ scrapes algae, diatoms, and other plant food ...
Molluscs and Arthropods.
... In today's lab we will explore the diversity of the invertebrate Phylum Mollusca (Latin for soft body). There are approximately 110,000 extant species of molluscs. These are found mainly in the marine environment with many representatives in freshwater and terrestrial biomes. Molluscs vary in size f ...
... In today's lab we will explore the diversity of the invertebrate Phylum Mollusca (Latin for soft body). There are approximately 110,000 extant species of molluscs. These are found mainly in the marine environment with many representatives in freshwater and terrestrial biomes. Molluscs vary in size f ...
Invertebrate Diversity
... • All cnidarians have nematocysts that are used to sting other organisms. These are found on the ends of the tentacles. • Gastrovascular cavity – sac with only one opening – serves in digestion, circulation and/or gas exchange. • Life cycles often include both a sessile polyp stage and a free-swimmi ...
... • All cnidarians have nematocysts that are used to sting other organisms. These are found on the ends of the tentacles. • Gastrovascular cavity – sac with only one opening – serves in digestion, circulation and/or gas exchange. • Life cycles often include both a sessile polyp stage and a free-swimmi ...
Diagnostic Characteristics - sharon-taxonomy2009-p3
... The phyla Mollusk (derived from the Latin mulluscus), meaning soft) contains more than 150,000 known species of invertebrates and can be divided into eight classes; the four most prevalent being Polyplacophora (chitons), Gastropoda (limpets, snails, whelks), Bivalvia (clams, oysters, scallops), and ...
... The phyla Mollusk (derived from the Latin mulluscus), meaning soft) contains more than 150,000 known species of invertebrates and can be divided into eight classes; the four most prevalent being Polyplacophora (chitons), Gastropoda (limpets, snails, whelks), Bivalvia (clams, oysters, scallops), and ...
platy mollusca annelida
... • Visceral mass: includes most organs • Foot: muscular portion used for locomotion • Mantle: covering that almost encloses visceral mass • Mantle cavity - space between the two folds of the mantle • Mantle may secrete a shell • Radula - rasping organ for feeding ...
... • Visceral mass: includes most organs • Foot: muscular portion used for locomotion • Mantle: covering that almost encloses visceral mass • Mantle cavity - space between the two folds of the mantle • Mantle may secrete a shell • Radula - rasping organ for feeding ...
Chapter 27
... • A have gills for respiration • B gases can diffuse • C some land snails had their mantle cavity evolved into primitive lung ...
... • A have gills for respiration • B gases can diffuse • C some land snails had their mantle cavity evolved into primitive lung ...
Cp 2 part 2 STUDY GUIDE
... 13. The __________ of crustaceans makes them different from other arthropods. ...
... 13. The __________ of crustaceans makes them different from other arthropods. ...
Introduction
... into the space between the left valve and the closely applied mantle in the region just below the anterior adductor muscle (see figure). Keep the blade close against the shell, loosen the mantle from the valve, and cut the large anterior adductor muscle. Repeat the procedure at the posterior end and ...
... into the space between the left valve and the closely applied mantle in the region just below the anterior adductor muscle (see figure). Keep the blade close against the shell, loosen the mantle from the valve, and cut the large anterior adductor muscle. Repeat the procedure at the posterior end and ...
Mollusks
... time, a pearl forms around the grain of sand or grit. Some oysters make beautiful pearls that are used in jewelry. The last group of mollusks is the cephalopods (SEF ul o pods). This word means "feet on head." The name comes from the fact that all cephalopods have a crown of tentacles around the hea ...
... time, a pearl forms around the grain of sand or grit. Some oysters make beautiful pearls that are used in jewelry. The last group of mollusks is the cephalopods (SEF ul o pods). This word means "feet on head." The name comes from the fact that all cephalopods have a crown of tentacles around the hea ...
MOLLUSC LABORATORY Class Scaphopoda Representative for
... Order Octopoda 1. Octopus – demonstration specimen ...
... Order Octopoda 1. Octopus – demonstration specimen ...
Name - BRainbeau.com
... Mollusks have a(n)______________________ A. acoelom B. pseudocoelom C. “true” eucoelom Which of the following is TRUE about clam reproduction? A. Freshwater clams have internal fertilization. B. Marine clams have external fertilization. C. Most clams are hermaphrodites like earthworms. D. All clams ...
... Mollusks have a(n)______________________ A. acoelom B. pseudocoelom C. “true” eucoelom Which of the following is TRUE about clam reproduction? A. Freshwater clams have internal fertilization. B. Marine clams have external fertilization. C. Most clams are hermaphrodites like earthworms. D. All clams ...
Mollusk Review - Biology Junction
... Mollusks have a(n)______________________ A. acoelom B. pseudocoelom C. “true” eucoelom Which of the following is TRUE about clam reproduction? A. Freshwater clams have internal fertilization. B. Marine clams have external fertilization. C. Most clams are hermaphrodites like earthworms. D. All clams ...
... Mollusks have a(n)______________________ A. acoelom B. pseudocoelom C. “true” eucoelom Which of the following is TRUE about clam reproduction? A. Freshwater clams have internal fertilization. B. Marine clams have external fertilization. C. Most clams are hermaphrodites like earthworms. D. All clams ...
On Being the Right Size
... as far apart before we could distinguish them at a given distance. But if their size were diminished and their number increased we should see no better. For it is impossible to form a definite image smaller than a wave-length of light. Hence a mouse’s eye is not a small-scale model of a human eye. I ...
... as far apart before we could distinguish them at a given distance. But if their size were diminished and their number increased we should see no better. For it is impossible to form a definite image smaller than a wave-length of light. Hence a mouse’s eye is not a small-scale model of a human eye. I ...
Phylum Mollusca
... 1) How does the exoskeleton of an arthropod compare with that of the endoskeleton of an echinoderm? What is each made of? 2) Which appendages are attached to the cephalothorax? Which are attached to the abdomen? 3) Which segment of the body is most flexible? 4) How does the nerve cord of an arthropo ...
... 1) How does the exoskeleton of an arthropod compare with that of the endoskeleton of an echinoderm? What is each made of? 2) Which appendages are attached to the cephalothorax? Which are attached to the abdomen? 3) Which segment of the body is most flexible? 4) How does the nerve cord of an arthropo ...
Phylum Mollusca
... that they capture with their tentacles. • Other mollusks are grazers and some are filter feeders. • Bivalves do not have radulas; they filter food from the water. ...
... that they capture with their tentacles. • Other mollusks are grazers and some are filter feeders. • Bivalves do not have radulas; they filter food from the water. ...
Document
... Which of the following is TRUE about clam reproduction? A. Freshwater clams have internal fertilization. B. Marine clams have external fertilization. C. Most clams are hermaphrodites like earthworms. D. All clams have indirect development. E. All clams have direct development. Bivalves have ________ ...
... Which of the following is TRUE about clam reproduction? A. Freshwater clams have internal fertilization. B. Marine clams have external fertilization. C. Most clams are hermaphrodites like earthworms. D. All clams have indirect development. E. All clams have direct development. Bivalves have ________ ...
Cephalopod size
Size has been one of the most interesting aspects of cephalopod science to the general public. This article lists the largest cephalopods from various groups, sorted in order of mantle length, total length, weight, and shell diameter. Extinct taxa are also included.