Questions & Answers
Browse all 18 questions from the
Neuroscience of the Natural World study set below.
Each question shows the correct answer — select a study format above to practice interactively.
1
Which organ serves as the central control unit of the nervous system in vertebrates?
-
A
Heart
-
B
Brain
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C
Lungs
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D
Stomach
2
What is the primary function of neurons in an animal's body?
-
A
Digesting food
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B
Filtering water
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C
Transmitting electrical signals
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D
Growing fur
3
Which part of a neuron is responsible for receiving signals from other neurons?
-
A
Dendrites
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B
Axon
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C
Cell body
-
D
Synapse
4
What is the protective outer layer of many animal brains called?
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A
Cortex
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B
Spine
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C
Scale
-
D
Shell
5
Which animal is known for having a decentralized nervous system consisting of nerve nets?
-
A
Lion
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B
Eagle
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C
Jellyfish
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D
Elephant
6
What chemicals allow neurons to communicate across the gap between them?
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A
Oxygen
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B
Neurotransmitters
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C
Water
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D
Glucose
7
Which sense do bats primarily use to navigate in the dark using their brain's processing power?
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A
Echolocation
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B
Color vision
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C
Thermal sensing
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D
Taste
8
In neuroscience, what is the gap between two neurons called?
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A
Tunnel
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B
Synapse
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C
Bridge
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D
Pathway
9
Which group of animals is known for having the most complex brain structures relative to their body size?
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A
Mammals
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B
Reptiles
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C
Amphibians
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D
Fish
10
What part of the brain is responsible for balance and coordination in birds?
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A
Cerebellum
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B
Brain stem
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C
Olfactory bulb
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D
Spinal cord
11
How do plants respond to stimuli without a nervous system?
-
A
By using electrical pulses only
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B
By using chemical signaling
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C
By having a central brain
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D
By having a spine
12
Which nerve carries visual information from the eye to the brain?
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A
Optic nerve
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B
Auditory nerve
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C
Olfactory nerve
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D
Spinal nerve
13
What is the primary role of the spinal cord in an animal?
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A
Digesting protein
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B
Connecting the brain to the body
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C
Storing fat
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D
Reflecting light
14
Which aquatic animal is famous for having a large brain and high intelligence?
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A
Dolphin
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B
Goldfish
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C
Sea sponge
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D
Coral
15
What part of the brain is most involved in processing smells in a shark?
-
A
Olfactory bulb
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B
Cerebrum
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C
Cerebellum
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D
Medulla
16
What type of signal travels along the axon of a neuron?
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A
Chemical signal
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B
Mechanical vibration
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C
Electrical impulse
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D
Magnetic wave
17
Which animal has a nervous system that allows it to change skin color rapidly?
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A
Octopus
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B
Goldfish
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C
Earthworm
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D
Snail
18
Which sense organ detects sound vibrations in the environment and sends signals to the brain?
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A
Ear
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B
Skin
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C
Tongue
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D
Nose
