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Biology midterm 2 exam 2024

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The cells that move throughout the sponges body wall to deliver food to the organisms cell is what? - Amoebocytes Skeletal support in sponges may be provided by what? - Spicules of calcium carbonate Spicules of silicon dioxide Fibers called spongin Many cnidarians have two distinct body forms...

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  • May 27, 2024
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Biology 2 midterm exam 2024

The cells that move throughout the sponges body wall to deliver food to the organisms cell
is what? - Amoebocytes Skeletal support in sponges may be provided by what? - Spicules
of calcium carbonate Spicules of silicon dioxide Fibers called spongin Many cnidarians
have two distinct body forms/stages called what? - Polyp and medusa Anthozoans include
what? - Sea anemones and corals Adult sponges have what? - Body walls with many pores
Hermaphroditic organisms do what? - Produce egg and sperm Characteristics of sponges
are what? - Non symmetrical; lack of organization into tissues and organs; Possess cells
that recognize other sponge cells Outer layer of a cnidarian is called what? - Epidermis The
inner layer of a cnidarian is specialized for what? - Digestion Water leaves the interior of a
sponge through what? - Osculum What is a spicule? - Hard spike-like structures in the wall
of a sponge A coral is a member of what class? - Anthozoa Ctenophores are the largest
organisms that move by what? - Cilia What is drawn through the pores of a sponge and out
through the osculum? - Water What is the jellylike matter between the ectoderm and the
endoderm (in cnidarians)? - Mesoglea What cavity serves both digestive and circulatory
purposes in some cnidarians? - Gastrovascular cavity What is regrowth of missing tissues
or organs? - Regeneration What is a network of cells that lacks a central control; impulses
pass in any or all directions to produce a generalized response? - Nerve net What is a free-
swimming, ciliated larva of a cnidarian? - Planula What is an aquatic invertebrate of the
phylum Porifera that attaches to stones or plants and that has a porous structure and a
tough, elastic skeleton? - Sponge What is a stinging cell of a cnidarian? - Cnidocyte What is
the name of the flagellate cells that line the cavities of a sponge? - Choanocyte Planarians
can produce asexually by doing what? - Fission Which phylum do roundworms belong to? -
Nematoda Roundworms have a fluid-filled cavity called a what? - Pseudocoelom A
roundworms digestive tract has how many opening(s)? - 2 Flatworms take up oxygen and
release carbon dioxide by the process of _________, which occurs across the body of the
animals. - Diffusion The _________ is a protective cellular covering of the bodies of
endoparasitic flukes that prevents them from being digested by their hosts. - Tegument
_________ are rectangular body sections of tapeworms. - Proglottids Organisms that feed
by using cilia to sweep food into their mouths are called what? - Rotifers Concentration of
sense organs at the anterior end is called what? - Cephalization A planarian takes in food
through what? - Pharynx What is a noncellular layer that protects a roundworm? - Cuticle
What is a type of reproduction where unfertilized eggs into adults? - Parthenogenesis What
is a parasitic flatworm of the class Trematoda and monogenea? - Fluke What is a host that
gives food and shelter to immature stages of a parasite? - Intermediate host What is the
host from which an adult parasite get its nourishment and in which reproduction occurs? -
Primary host What is the name of the head of a Tapeworm, which has hooks and suckers to

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