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Classification of Animals
Biology
This text outlines the classification of animals, differentiating between invertebrates and vertebrates and listing several phyla within these groups. It mentions key characteristics used for classification such as body plan, presence or absence of a coelom, and other features like the vertebral column.
Zoology
Classification
Biology
30 Questions
Easy
Ages 8+
Mar 8, 2026
About this Study Set
This study set covers Biology through
30 practice questions.
This text outlines the classification of animals, differentiating between invertebrates and vertebrates and listing several phyla within these groups. It mentions key characteristics used for classification such as body plan, presence or absence of a coelom, and other features like the vertebral column. Every question includes the correct answer so you can learn as you go — pick any format above to get started.
Questions & Answers
Browse all 30 questions from the
Classification of Animals study set below.
Each question shows the correct answer — select a study format above to practice interactively.
1
What are the two main categories animals are divided into based on the presence of a backbone?
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A
Invertebrates and Arthropods
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B
Vertebrates and Mollusks
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C
Invertebrates and Vertebrates
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D
Crustaceans and Insects
2
Which phylum includes animals like sponges?
-
A
Cnidaria
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B
Porifera
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C
Platyhelminthes
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D
Annelida
3
What is a characteristic used by scientists to classify animals into groups?
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A
Color
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B
Body plan
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C
Size
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D
Habitat
4
Which phylum is described as having simple body layers?
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A
Annelida
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B
Cnidaria
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C
Platyhelminthes
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D
Porifera
5
What are some examples of animals in the phylum Chordata?
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A
Sponges, jellyfish, corals
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B
Fish, amphibians, birds, mammals
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C
Earthworms, leeches
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D
Tapeworms, flatworms
6
The presence or absence of what is a key feature for classifying animals?
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A
A skeleton
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B
A vertebral column
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C
A coelom
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D
A nervous system
7
Which phylum includes animals like jellyfish and corals?
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A
Cnidaria
-
B
Annelida
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C
Platyhelminthes
-
D
Porifera
8
What type of animals are found in the phylum Annelida?
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A
Tapeworms
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B
Flatworms
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C
Earthworms and leeches
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D
Sponges
9
What are tapeworms and flatworms examples of?
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A
Annelids
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B
Cnidarians
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C
Platyhelminthes
-
D
Chordates
10
What does the phylum Chordata include?
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A
Invertebrates
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B
Vertebrates
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C
Arthropods
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D
Mollusks
11
What are some examples of invertebrates mentioned?
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A
Fish, birds, mammals
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B
Sponges, jellyfish, worms
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C
Amphibians, reptiles
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D
Insects, spiders, crustaceans
12
What is a common feature of vertebrates?
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A
A vertebral column
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B
A coelom
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C
Simple body layers
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D
No backbone
13
What are the two broad categories that animals are classified into?
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A
Mollusks and Arthropods
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B
Invertebrates and Vertebrates
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C
Annelids and Cnidarians
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D
Platyhelminthes and Chordates
14
Which phylum contains animals that are commonly called "worms"?
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A
Cnidaria
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B
Annelida
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C
Porifera
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D
Platyhelminthes
15
Which of these is NOT a phylum mentioned in the text?
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A
Porifera
-
B
Chordata
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C
Arthropoda
-
D
Annelida
16
What does "bilharzia" refer to?
-
A
A type of sponge
-
B
A type of worm
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C
A type of jellyfish
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D
A type of fish
17
What are "fish, amphibians, birds, mammals" examples of?
-
A
Invertebrates
-
B
Arthropods
-
C
Vertebrates
-
D
Mollusks
18
What are "insects, spiders, crustaceans" examples of?
-
A
Vertebrates
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B
Mollusks
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C
Arthropods
-
D
Annelids
19
What is Planaria an example of?
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A
Annelida
-
B
Cnidaria
-
C
Platyhelminthes
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D
Porifera
20
What are "sea urchins, corals" examples of?
-
A
Annelida
-
B
Cnidaria
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C
Porifera
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D
Platyhelminthes
21
What is a characteristic of the phylum Cnidaria?
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A
Segmented bodies
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B
Simple body layers
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C
Presence of tentacles
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D
A vertebral column
22
What kingdom do animals belong to?
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A
Plantae
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B
Fungi
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C
Animalia
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D
Protista
23
The text mentions that scientists classify animals into approximately how many phyla?
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A
Ten
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B
Six
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C
Twenty
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D
Fifty
24
Which of the following are mentioned as characteristics for classification?
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A
Speed and size
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B
Diet and habitat
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C
Body plan and coelom
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D
Number of legs and wings
25
What is the primary characteristic that defines vertebrates?
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A
Having a backbone
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B
Having a coelom
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C
Having tentacles
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D
Being multicellular
26
Which phylum is characterized by having segmented bodies?
-
A
Platyhelminthes
-
B
Cnidaria
-
C
Annelida
-
D
Porifera
27
What does the term "cephal" likely relate to in the context of body plans?
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A
The tail
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B
The head
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C
The limbs
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D
The internal organs
28
The text mentions "open h**s" which likely refers to what system?
-
A
Circulatory system
-
B
Nervous system
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C
Digestive system
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D
Respiratory system
29
What is an example of a simple multicellular animal mentioned?
-
A
Earthworm
-
B
Jellyfish
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C
Tapeworm
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D
Spider
30
Which phylum includes animals that are often referred to as "flatworms"?
-
A
Annelida
-
B
Cnidaria
-
C
Platyhelminthes
-
D
Chordata
