Lesson 1
Name an animal that has a skeleton without hard parts?
The _______ is the part of a complex animal's nervous system that receives information, interprets it, and controls the animal's response.
brain
The ______ is the only mammal that flies.
bat
This is where two parts of a skeleton meet.
a joint
Eyes and ears are examples of ________ organs.
sense
An adaptation that helps amphibians move from place to place in water is
A.eggs covered by jelly.
B.moist skin.
C.webbed feet.
D.a strong skeleton.
c. webbed feet
What happens to an arthropod during molting?
It sheds it's exoskeleton
True or False Sensory neurons carry response information to organs.
False.
For bonus points. What word is in correct and what should it be?
A squid moves through water using __________.
jet propulsion
What happens when one muscle in a pair contracts?
The other muscle relaxes.
Which body system detects a stimulus and creates a response?
nervous system
This internal gas-filled sac, helps fish stay at a certain depth without using much energy.
Why are some muscles attached to bones?
They move the bone to help move the body.
Suppose that you close a window because you notice that rain is falling. Your action in closing the window is a(n)
response
Animals move to obtain food, defend and protect themselves, maintain _________, and find mates.
homeostasis
What factor makes it possible for animals with endoskeletons to grow larger than animals with exoskeletons?
endoskeletons are lighter than exoskeletons
A(n) _______ is an electric message that travels through the nervous system.
impulse
water vascular system