WorksheetsInvertebrates Test Ch 18
Total questions: 20
Worksheet time: 11mins
All animals
are heterotrophic
obtain food by absorption
have cell walls made of chitin
are prokaryotic
Typical animal embryos have a(n) __________, or external layer, and a(n) _____________, which lines the digestive tract
endoderm, ectoderm
ectoderm, blastula
ectoderm, endoderm
mesoderm, gastrula
Which statement about circulatory systems is true?
Annelids have an open circulatory system, while molluscs have a closed circulatory system
vertebrates have an open circulatory system, while annelids have a closed circulatory system
vertebrates have an open circulatory system, while arthropods have a closed circulatory system
arthropods have an open circulatory system, while annelids have a closed circulatory system
A dog's head is at its ______ end, and its belly is its _________ surface.
anterior, ventral
posterior, ventral
posterior, dorsal
anterior, dorsal
Which statement about deuterostomes is true?
deuterostomes have only two tissue layers
the opening that forms during gastrulation becomes the anus
deuterostomes lack true tissues
the opening that forms during gastrulation becomes the mouth
The locomotive behavior of earthworms is enabled by contraction of their longitudinal and circular muscles; this is seen through their typical burrowing behavior. Nematodes, however, contract their longitudinal muscles against the pressure of fluid in their bodies to produce a whiplike motion that enables them to move. Which do you think would be able to move easily, and why?
the earthworm, because it uses two sets of muscles to help it move through the watery solution
the earthworm, because it can contract and ex[and its muscles to burrow down through the watery solution
the nematode, because its whiplike motion will easily propel it through the watery solution
the nematode because it can move its paddle-like appendages on its segments to help it move through the watery solution
How do sponges transport nutrients within their bodies?
they rely on diffusion to move nutrients between their cells
they are not able to transport nutrients within their bodies but must independently absorb all necessary nutrients from surrounding water
they have simple digestive and circulatory systems composed of spongin
their mobile amoebocytes transport food molecules from cell to cell
Tapeworms are similar to fungi in that they
have cell walls made of chitin
inhabit marine, damp terrestrial, and freshwater habitats
feed by absorption
are sessile autotrophs
Which characteristic is typical of molluscs?
a sessile lifestyle
a gastrovascular cavity with only one opening
a rasping organ called the radula
an internal skeleton and segmented body plan
While wading in the ocean, you look down into the water and notice an umbrella-shaped, translucent animal. It swims by pulsing its body, and long tentacles trail behind it. One of them brushes your leg. Ouch! You feel a burning sensation where it touched you. To what phylum does this creature probably belong?
porifera
cnidaria
mollusca
platyhelminthes
You inflate a balloon and let it go. It shots away as air exits forcefully through the balloon's narrow opening. This most closely resembles the mode of movement seen in
snails
sea anemones
squid
nematodes
While walking in your basement, you hear a crunching noise and notice that you have stepped on an organism. You look closely and see part of a segmented body and a few jointed appendages. What phylum does this animal represent?
echinodermata
chordata
annelida
arthropoda
Which group has a series of similar segments that make up most of the body?
millipedes
scorpions
crustaceans
insects
Complete metamorphosis is considered to occur in a species if:
the larva and adult live in different habitats
the larva and adult have different diets
a pupation stage separates the larval and adult stages
the adult has wings, but the larva does not
The flexible, longitudinal rod that is located between the digestive tract and the nerve cord in chordates is called the:
dorsal, hollow nerve cord
notochord
spinal cord
spine
You find a small, elongated animal embedded in the sand with one end sticking out. Among other things, it has segmental musculature, a coelom, a notochord, and a complete digestive tract with an anus located partway down the body. This animal is:
either larval echinoderm or chordate
larval echinoderm
nnelid
chordate
Which comparison about invertebrate groups is true?
molluscs have no true tissues and are filter feeders, while cnidarians have true tissues and a gastrovascular cavity
cnidarians have no true tissues and are filter feeders, while flat worms have true tissues and a gastrovascular cavity
Nematodes have no true tissues and are filter feeders, while chordates have and a gastrovascular cavity
sponges have no true tissues and are filter feeders, while cnidarians have true tissues and a gastrovascular cavity
Which of these molluscs commonly have a coiled shell?
bivalves only
cephalopods only
gastropods and bivalves
gastropods only
Which statement regarding cnidarians is true?
cnidarians are herbivores and can be destructive grazers on seaweeds
cnidarians have three tissue layers
the digestive and circulatory compartment of cnidarians is called the gastrovascular cavity
the more stationary cnidarian body form, which is cylindrical with a ring of tentacles, is the medusa
Flatworms (platyhelminthes) are _______ and typically have ______.
bilaterally symmetrical; complete digestive tract with a mouth and anus
all parasites; no digestive system
bilaterally symmetrical; a gastrovascular cavity with one opening
radially symmetrical; no digestive system
