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Unit B, Ch3 Test
By Lori Dimond
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Last updated over 1 year ago
37 questions
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Note from the author:
This test also has an attached chart to complete
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Question 1
1.
To survive, all biotic organisms need all of these except?
Food
Shelter
lungs
Water
oxygen
Question 2
2.
The word 'muscular foot' is commonly used to describe which group of animals?
Reptiles
Mammals
Birds
Mollusks
Question 3
3.
Which animal uses protein rods for their skeletal structure?
Fish
Mammal
Bird
Sponge
Question 4
4.
Which of these would an arthropod NOT do to protect itself immediately after it molts?
It stays hidden until its new exoskeleton hardens
It camouflages with its surroundings
It fights off predators with its strong jaws
It immediately goes underground for protection
Question 5
5.
Why does an arthropod need to molt?
To enhance its mobility
To reproduce
To grow, because its hard exoskeleton does not expand
To change its appearance
Question 6
6.
What happens to an arthropod's exoskeleton after molting?
It develops a new, larger exoskeleton
It reuses the same exoskeleton
It lives without an exoskeleton
It adopts a soft body structure
Question 7
7.
Which of these is a mollusk without a shell sometimes found in gardens?
Beetle
Ant
Slug
Worm
Question 8
8.
What does a sea urchin use for movement and feeding?
Shell
Mouth
Spines
Tube feet
Question 9
9.
What protects a sea urchin from predators?
Teeth
Spines
Tail
Claws
Question 10
10.
How does a sea urchin breathe?
Through gills
Through lungs
Through tiny pores in its body
Through a snout
Question 11
11.
What do sea urchins primarily eat?
Algae
Other sea urchins
Fish
Plankton
Question 12
12.
List or describe two ways in which a bivalve can protect itself when it closes its shells.
Question 13
13.
List two ways earthworms help plants grow.
Question 14
14.
What type of exoskeleton does a spider have?
Jointed
Smooth
Feathered
Fur-covered
Question 15
15.
What characteristic feature do cnidarians share?
They have stinging cells
They have fur
They have scales
They have feathers
Question 16
16.
Which of the following is not a characteristic of arthropods?
Having an internal skeleton
Possessing an exoskeleton
Having jointed appendages
Having segmented bodies
Question 17
17.
What category of animals do flatworms and roundworms belong to?
Reptiles
Vertebrates
Mammals
Invertebrates
Question 18
18.
How do echinoderms usually move?
With wings
With tube feet
With tentacles
With fins
Question 19
19.
What type of digestive system does a roundworm have?
Only in adults
An incomplete one
A complete one
None
Question 20
20.
What type of animals are classified as cnidarians?
Marine invertebrates
Amphibians
Mammals
Reptiles
Question 21
21.
What is a key feature of an insect’s physical structure?
Bony skeleton
Soft shell
Jointed exoskeleton
Multiple hearts
Question 22
22.
What is the term for a skeleton that is outside of an animal's body?
Exoskeleton
Outer skeleton
Epidermis
Endoskeleton
Question 23
23.
What type of skeleton does an insect have?
Endoskeleton
Exoskeleton
Hydroskeleton
Aeroskeleton
Question 24
24.
Which statement about parasites is incorrect?
Parasites can cause harm
Parasites depend on their hosts for survival
Parasites are beneficial to their hosts
Parasites can live inside or outside hosts
Question 25
25.
What type of worm has only a single opening to its digestive system?
Flatworm
Earthworm
Tapeworm
Roundworm
Question 26
26.
Which one of these is not a water breathing method
Skin absorption
Gill breathing
Lung breathing
Through tiny hairs
Question 27
27.
Which type of animal can extract oxygen from water through its skin?
Frog
Shark
Squid
Whale
Question 28
28.
Which of the following is an example of an echinoderm?
Jellyfish
Catfish
Starfish
Goldfish
Question 29
29.
mollusks move their muscular feet to
move food to their mouth
move or to burrow in the sand
drill into hard surfaces
release fertilized eggs into the water
Question 30
30.
Which of these is not typical of invertebrates?
Being able to regenerate lost body parts
Having an endoskeleton
Absence of backbone
Having exoskeleton
Question 31
31.
What is common in echinoderms but not in mammals?
Spine
Heart
Radial symmetry
Brain
Question 32
32.
What group do animals like worms, snails, and octopus belong to?
Reptiles
Vertebrates
Invertebrates
Mammals
Question 33
33.
Which of the following is an invertebrate?
Elephant
Jellyfish
Eagle
Dog
Question 34
34.
Why don't invertebrates have a backbone?
They have thick skin
Their body is too small
They have an exoskeleton for structure
They don't need one
Question 35
35.
Animals that have backbone are also known as ____?
Vertebrates
Reptiles
Invertebrates
Mammals
Question 36
36.
What is radial symmetry in biological organisms similar to?
A mirror reflection
A shadow
A puzzle piece
A pie cut into even slices
Question 37
37.
Which animal group does a starfish belongs to?
Echinoderms
Birds
Amphibians
Reptiles