Bio 2 - Lab Exam 3

Front 1

Animalia are

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chemoheterotrophic eukaryotes with a multicellular diploid stage and participate in sexual reproduction

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Animalia bodies are

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symmetrical

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Animals evolved true tissue which allows

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specialization

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Radial symmetry means that the symmetry of the body is

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in any direction

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Bilateral symmetry means that

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the symmetry of the body is only in one direction

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A diplooblastic cell has two layers, the

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ectoderm (external) and the endoderm (internal)

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A triploblastic cell has three layers, the

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endoderm (external), ectoderm(internal), and the mesoderm (middle)

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Phylum porifera is composed of

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aquatic sponges

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Porifera are mostly

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asymmetrical

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Porifera lack

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true tissue

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Porifera adults are

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sessile (benthic)

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Porifera larvae are

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motile

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The internal skeleton of porifer are supported by

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spongin (protien) and spicules (silical or calciu)

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Porifera reproduce mostly

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asexually

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Porifera filter water in to the sponge through the

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ostium

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Porifera feeding cell that lines the inside of their body is the

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choanocyte

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The interior of the porifera is called the

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spongocoel

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Porifera spew the water current out of the

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osculum

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The phylum cnidaria consists of

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jellyfish, anemones, and corals

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Cnidaria have a __________ symmetry

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radial

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Cnidaria have ____________ tissue

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diploblastic

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Cnidaria have three distinct life cycle stages which are

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the polyp (asexual, sessile), the medusal(sexual, free floating), and the larval (free swimming)

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For this card draw a cnidria diagram

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x

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For this card draw a porifera diagram

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x

Front 25

The tree classes of cnidaria are

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the anthazoa (corals and anemones), scyphozoa (true jellies), and hydrozoa

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Anthazoa are ______ dominant

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polyp

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Scyphozoa are ______ dominant

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medusa

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Hydrazoa alternate between

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polyp and medusa

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For this card draw the obelia life cycle

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x

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Spongin and spicules support the

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internal skeleton

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Bilateral animals often display

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cephalization

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Cephalization is

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the concentration of nervous system in a cluster

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Worms have three types of embryonic development which are

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acoelomates (no cavity), psudeocoelomates (false cavity), and Eucoelomates (true cavity).

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Acoelomates have __________ tissue between gut and body wall to hold organs in place

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semi-solid

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Pseudocoelomates have __________ in the body cavity in contact with the endoderm and organs are loosely held in place. It is partially lined with mesoderm

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fluid

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Eucolomates have a body cavity lined with the ________

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mesoderm

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Coelom functions include

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circulation, digestion, hydrostatic skeleton, and space for internal organs

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The phylum platyhelminthes contains

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flatworms and tapeworms

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For this card draw the planarian anatomy

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x

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For this crd draw the tapeworm anatomy

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x

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The phylum nemotoda contains

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round worms

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Nemotoda are psuedoceolomates meaning that they have

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fluid in the body cavity

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Nemotoda are

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parasitic

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The phylum annelida contains

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segmented worms including earthworms, seaworms, and leeches

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For this card draw the earthworm anatomy

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x

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For this card draw the earthwom cross section

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x

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Segmentation refers to a body being composed of

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repeating segments

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Parapodia are

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unjointed lateral outgrowths that bear the chaeta

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Chaeta are

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chitinous bristles found on annelids, arthropods, or insects

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The "tube within a tube system" refers to

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and inner tube (the gut) encased in an outer tube (the body wall, skin)

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The hydrostatic skeleton is fluid filled and moves by

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muscle contractions that change the body shape

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Flatworms are acoelomate which means they lack a

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coelom.

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A coelom is the

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fluid filled space between the outer body and the digestive tube

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For this card draw the planaria prepared slide diagram

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x

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The scolex is

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the anterior of a tape worm composed of barbs and suckers

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The proglottids are

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the reproductive segments on tapeworms

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Proglottids are filled with

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fertilized eggs

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An incomplete digestive tract has

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only one opening

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A complete digestive tract has

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two openings

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Taenia have ________ digestive tracts

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incomplete

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Chaetae in annelids extend from the body segments and function in

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movement

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Earthworms are deposit feeders meaning

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they burrow through sediment and digest organic material within it

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The clitellum is

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the smooth saddle like structure on the middle of the earthworms body that functions in reproduction

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The typhlosole increases

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intestine surface area to provide more effective digestion

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The phylum mollusca contains

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shelled animals such as snails, clams, and oysters as well as unshelled animals like octopi, slugs, and squid

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The class gastropoda contains

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snails and slugs

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The class bivalvia contains

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clams, oysters, and mussels

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The class cephalopoda contains

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squids, octopi, and nautilus

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For this card draw the mollusk internal anatomy

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slide 5

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The phylum arthropoda contain

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bugs that have body segmentation, jointed appendages, and an exoskeleton of chitin. Includes trilobites, spides, crabs, scorpions, and centipedes.

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Arthropoda share the general 3 characteristics

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body segmentation, jointed appendages, and exoskeletons of chitin

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The subphylum trilobitomorpha contains

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trilobites, who have extensive body segmentation

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The subphylum cheliceriformes contains

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crabs, spiders, mites, scorpions

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The subphylum myriapoda contains

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millipedes and centipedes

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The subphylum hexapoda contain

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insects

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The subphylu crustacea contains

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lobsters, crabs, shrimp, and barnacles

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Crustacea have two pair of _____ and _____ limbs

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two, biramous

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Hexapoda have

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spiracles

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Cheliceriforms have

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fusion of segments with anterio appendage modified as chelicerates

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The general mollusk body plan consists of these three parts

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visceral mass, the foot, and the mantle

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The visceral mass of a mollusk is

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a sack containing internal organs

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The mantle of a mollusk is

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a thin tissue layer that secretes the shell

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Gastropoda have a feeding structure called the radula which

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is locate in the moth and is covered with smalle teeth

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Most bivalva are this kind of feeder

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filter feeders

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Bivalves contain two valves connected at the

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hinge

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For this card, draw the clam anatomy

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x

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Cheliceriformes are named for the appendges near their mouths called

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chelicerae

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Chelicerae are

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appendeges near the mouths of cheliceriformes

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Hexapoda have ______ major regions and _______ legs

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three, six

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holometabolous metamorphosis is the process in which

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larva change into adults that are substantially different in morphology

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The pupa is

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an intermediate form in which larval tissues are restructured to form the adult