GROUPS OF MOLLUSCS The three major classes of mollusks are - PowerPoint PPT Presentation

Nov 05, 2022 •386 likes •449 views

GROUPS OF MOLLUSCS The three major classes of mollusks are Gastropods Bivalves Cephalopods GASTROPODS Class Gastropoda Pond snails, land slugs, limpets, nudibranchs Shell-less or single-shelled Move by using a

GROUPS OF MOLLUSCS • The three major classes of mollusks are • Gastropods • Bivalves • Cephalopods
GASTROPODS • Class Gastropoda • Pond snails, land slugs, limpets, nudibranchs • Shell-less or single-shelled • Move by using a muscular foot located on the ventral side. • Many gastropods have a single shell that protects their bodies. • When threatened, they can pull completely into their shells. • Shell-less gastropods protect themselves in other ways • Releasing ink, chemicals, hiding
• Class Bivalvia BIVALVES • Bivalves have two shells that are held together by one or two powerful muscles. • Common bivalves include: • Clams • Burrow in mud or sand • oysters • Mussels • Attach to rocks • Scallops • Least sedentary • Move around rapidly by flapping shells
• Class Cephalopoda CEPHALOPODS • Octopi, squids, cuttlefish, nautiluses • Cephalopods • Soft-bodied mollusks • Head is attached to a single foot • The foot is divided into tentacles or arms • 8 or more tentacles equipped with sucking disks that grab and hold prey
• Cephalopods have complex sense organs • Detect and respond to external stimuli • Distinguish shapes by sight, texture by touch • Eyes are as complex as some vertebrates • Can be the size of a dinner plate • Can distinguish objects as small as 0.5 cm away

Recommend

ARTHROPODS MOLLUSCS CNIDARIANS ANNELIDS ECHINODERMS INVERTEBRATE GROUPS ARTHROPODS insects

INVERTEBRATE GROUPS ARTHROPODS MOLLUSCS CNIDARIANS ANNELIDS ECHINODERMS INVERTEBRATE GROUPS ARTHROPODS insects All arthropods have got ONE thing arachnids in common. What is it?: SIX LEGS myriapods ANTENNAE BODY SEGMENTS EXOSKELETON

234 views • 6 slides

Are bivalve molluscs good indicators of microplastic pollution in the environment? J. Evan Ward

Are bivalve molluscs good indicators of microplastic pollution in the environment? J. Evan Ward S. Zhao, K. Mladinich, T. Griffin, B. Holohan & S. Shumway Background environmental concentration? [Microplastic] varies considerably

349 views • 20 slides

Marine Molluscs Simon Hills (biologist) Ecology Group Institute of Natural Resources Massey

Marrying Molecules and Morphology in Marine Molluscs Simon Hills (biologist) Ecology Group Institute of Natural Resources Massey University Palmerston North, NZ James Crampton (paleontologist) GNS Science Lower Hutt, NZ Barbara Holland

381 views • 17 slides

Modelling approach Doses to man and biota Bacteria DCF Mammal Seaweeds Fish Molluscs

Modelling approach Doses to man and biota Bacteria DCF Mammal Seaweeds Fish Molluscs Crustacea CF M CF F CF S CF C Ice module Radioactive decay Surface water Advection Radionuclides can be present in three Advection Advection

353 views • 6 slides

On p -groups with automorphism groups of prescribed properties Luke Morgan The Centre for the

Introduction Maximally symmetric p -groups The groups On p -groups with automorphism groups of prescribed properties Luke Morgan The Centre for the Mathematics of Symmetry and Computation The University of Western Australia Joint work with:

983 views • 48 slides

Images of word maps in almost simple groups and quasisimple groups . . . . . Matthew Levy

Introduction The Simple Groups Other Groups . . Images of word maps in almost simple groups and quasisimple groups . . . . . Matthew Levy Imperial College London, Supervisor: Nikolay Nikolov Groups St Andrews 2013 . . . . . .

603 views • 43 slides

Coxeter groups and Artin groups Day 4: Affine Isometries and Artin Groups Jon McCammond (U.C.

Coxeter groups and Artin groups Day 4: Affine Isometries and Artin Groups Jon McCammond (U.C. Santa Barbara) 1 Factoring Motions into Reflections In this final talk, Id like to analyze all possible ways to factor a spherical or affine

239 views • 23 slides

Object Groups SRI International Bioinformatics 1 Object Groups Collect and save lists of

Object Groups SRI International Bioinformatics 1 Object Groups Collect and save lists of genes, metabolites, pathways Transform, filter, and analyze them Share groups with colleagues Use groups in conjunction with publications

308 views • 14 slides

Coxeter groups and Artin groups Day 2: Symmetric Spaces and Simple Groups Jon McCammond (U.C.

Coxeter groups and Artin groups Day 2: Symmetric Spaces and Simple Groups Jon McCammond (U.C. Santa Barbara) 1 Symmetric Spaces Def: A Riemannian manifold is called a symmetric space if at each point p there exists an isometry fixing p and

295 views • 25 slides

On the Covering Numbers of Small Symmetric and Alternating Groups, and Some Sporadic Groups

On the Covering Numbers of Small Symmetric and Alternating Groups, and Some Sporadic Groups Luise-Charlotte Kappe, Eric Swartz (SUNY,Binghamton); Spyros Magliveras, Daniela Nikolova, Michael Epstein (FAU) Groups St. Andrews 2017 Abstract

568 views • 40 slides

Symmetric cohomology of groups Mahender Singh Knots, Braids and Automorphism Groups Novosibirsk

Symmetric cohomology of groups Mahender Singh Knots, Braids and Automorphism Groups Novosibirsk July 2014 Mahender Singh IISER Mohali Introduction Cohomology of groups is a contravariant functor turning groups and modules over groups into

809 views • 34 slides

Keep Teaching Groups in canvas Getting Started Groups in Canvas Webinar Topics we will cover in

Keep Teaching Groups in canvas Getting Started Groups in Canvas Webinar Topics we will cover in this webinar include: Groups in Global Navigation Creating Groups Sets and Groups Assignment Settings & Group Policies 2 Global Navigation

260 views • 14 slides

Groups The first algebraic structure we will study in details is groups . Unlike all the other

Groups The first algebraic structure we will study in details is groups . Unlike all the other structures we briefly discussed, groups have only one operation . It could be either sum or product. [As you might have seen before in Math

661 views • 13 slides

Coxeter groups and Artin groups Day 1: Polytopes and Reflection Groups Jon McCammond (U.C. Santa

Coxeter groups and Artin groups Day 1: Polytopes and Reflection Groups Jon McCammond (U.C. Santa Barbara) 1 Overview The plan is to spend two days on (topics related to) Coxeter groups, and two days on (topics related to) Artin groups.

728 views • 25 slides

Structure Groups (and Rings) Wolfgang Rump Instead of Groups and associated Structures I

Structure Groups (and Rings) Wolfgang Rump Instead of Groups and associated Structures I will talk on Structures and associated Groups . 1. Structures and groups To analyse a mathematical structure X in terms of group theory, one would

603 views • 21 slides

Constructing non-positively curved spaces and groups Day 3: Artin groups and small-cancellation

Constructing non-positively curved spaces and groups Day 3: Artin groups and small-cancellation groups Jon McCammond U.C. Santa Barbara 1 Outline I. CAT(0) and Artin groups II. CAT(0) and small cancellation groups III. CAT(0) and ample

413 views • 24 slides

Growth in permutation groups and linear New work on algebraic groups permutation groups H. A.

Growth in permutation groups and linear algebraic groups H. A. Helfgott Introduction Diameter bounds Growth in permutation groups and linear New work on algebraic groups permutation groups H. A. Helfgott September 2018 Growth in

697 views • 65 slides

COOPERATIVE GROUPS Kyrylo Perelygin, Yuan Lin GTC 2017 Cooperative Groups: a flexible model for

COOPERATIVE GROUPS Kyrylo Perelygin, Yuan Lin GTC 2017 Cooperative Groups: a flexible model for synchronization and communication within groups of threads. At a glance Benefits all applications Scalable Cooperation among groups of threads

929 views • 56 slides

FOCUS GROUPS ScWk 242 Session 4 Slides 2 When to Use Focus Groups? Definition inition: F

FOCUS GROUPS ScWk 242 Session 4 Slides 2 When to Use Focus Groups? Definition inition: F : Foc ocus g us groups a oups are a a sm small g ll group of oup of a a se sele lecte ted popula d population tha tion that a t are a

545 views • 17 slides

The geometry of involutions of algebraic groups and of Kac-Moody groups International Workshop on

The geometry of involutions of algebraic groups and of Kac-Moody groups International Workshop on Algebraic Groups, Quantum Groups and Related Topics July 19, 2009 Max Horn TU Darmstadt, Germany mhorn@mathematik.tu-darmstadt.de July 19, 2009

947 views • 80 slides

Degree of commutativity of infinite groups ... or how I learnt about rational growth and ends of

Introduction & Motivation Right-angled Artin groups Groups with infinitely many ends Degree of commutativity of infinite groups ... or how I learnt about rational growth and ends of groups Motiejus Valiunas University of Southampton

372 views • 22 slides

People and Groups People and Groups Software development is done by human beings, for human

People and Groups People and Groups Software development is done by human beings, for human beings. Running successful projects requires understanding the Dr. James A. Bednar psychology of individuals, the dynamics of small groups,

317 views • 4 slides

Finite p-groups that determine p-nilpotency locally Th. Weigel UNIVERSIT DEGLI STUDI DI

p-Nilpotency p-groups The Proof Swan groups Yoshida p-groups Finite p-groups that determine p-nilpotency locally Th. Weigel UNIVERSIT DEGLI STUDI DI MILANO-BICOCCA Dipartimento di Matematica e Applicazioni Novosibirsk, July 19 th , 2013

352 views • 23 slides

Witt groups and Witt spaces 1. Geometric interpretations of the Witt groups W ( Z ) and W ( Q )

Witt groups and Witt spaces 1. Geometric interpretations of the Witt groups W ( Z ) and W ( Q ) 2. Witt space bordism and BalmerWitt groups of PL-constructible sheaves 3. Witt bordism proof of CappellShanesons L-class formula 4.

201 views • 17 slides