Ch 8, Les 1-3, 7th Grade Question Preview (ID: 61120)
Animals.
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Nerve cells that detect stimuli
a) sensory neurons
b) interneurons
c) motor neurons
d) impulse neurons
A ___ is a group of neurons that receives information, interprets it, and controls an animal's response.
a) brain
b) nerve cord
c) nerve net
d) lung
A hard outer covering that supports the animal and protects it
a) exoskeleton
b) endoskeleton
c) water vascular system
d) hydrostatic skeleton
Some animals don't have skeletons with hard parts.
a) true
b) false
c)
d)
An arthropod must periodically ___ when they grow because their skeletons are too small.
a) molt
b) grow
c) impulse
d) respond
Which is true of endoskeletons?
a) all of the above
b) vertebrates with endoskeletons grow larger tahn animals with exoskeletons
c) endoskeletons are relatively light
d) they contain living cells
Vertebrates do not have jointed appendages.
a) false
b) true
c)
d)
Muscles can be found
a) all of the above
b) inside organs
c) attached to the inside of exoskeletons
d) attached to the outside of bones or cartilage
Which of the following happens at a joint?
a) two parts of a skeleton meet
b) muscle cells grow
c) a new exoskeleton is formed
d) spikelike structures are made in cells
Cartilage is ___ flexible than bone.
a) more
b) less
c) equally as
d) none of the above
Nerve cells that carry response information to muscles and other organs
a) motor neurons
b) interneurons
c) sensory neurons
d) impulse neurons
The odor of baking bread is an example of a(n)
a) stimulus
b) response
c) impulse
d) neuron
Animals move to
a) all of the above
b) obtain food
c) defend and protect themselves
d) maintain homeostasis
A squid moves through the water using
a) jet propulsion
b) webbed feet
c) streamlined bodies
d) flippers
An internal, gas-filled sac that helps a fish stay at a certain depth
a) swim bladder
b) swim liver
c) floatation bladder
d) balance bladder
A system of fluid-filled tubes that allow echinoderms to grip surfaces and move along
a) water vascular system
b) hydrostatic skeletons
c) swim bladders
d) oily livers
A nerve cell with a unique structure for receiving and passing on information
a) neuron
b) nucleus
c) synapse
d) joint
Animals with many sense organs can process many stimuli at the same time.
a) true
b) false
c)
d)
Which does NOT have an endoskeleton?
a) earthworm
b) camel
c) Teddy Cat
d) birds
Sharks and some fishes have endoskeletons made of
a) cartilage
b) bone
c) skin
d) spikes
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