WorksheetsBiology Week 13 Chapter 17&18
Total questions: 30
Worksheet time: 15mins
Name
Class
Date
1.
Non-bony skeleton that forms on the outside of the body
a)
exoskeleton
b)
Annelida
c)
trilobite
d)
Arthropod
2.
Another word for backbone
a)
Arthropod
b)
vertebral column
c)
Mollusca
d)
animal
3.
Multicellular, eukaryotic, cannot make their own food, heterotrophs
a)
notochord
b)
vertebrate
c)
animal
d)
pseudocoelom
4.
Rigid rod that runs the length of the body, support body and gives it shape
a)
pseudocoelom
b)
exoskeleton
c)
notochord
d)
ectoderm
5.
No backbone present in this type of animal
a)
pseudocoelom
b)
invertebrate
c)
ectoderm
d)
coelom
6.
Backbone present in this type of animal
a)
vertebrate
b)
coelom
c)
animal
d)
notochord
7.
Partial body cavity that is filled with fluid, allows room for internal organs to develop and cushions them
a)
notochord
b)
segmentation
c)
pseudocoelom
d)
radial symmetry
8.
Outer cell layer of embryonic cell layers
a)
ectoderm
b)
radial symmetry
c)
animal
d)
mesoderm
9.
Fluid-filled body cavity, completely enclosed by mesoderm, lies between digestive cavity and body wall
a)
mesoderm
b)
coelom
c)
radial symmetry
d)
hydrostatic skeleton
10.
First type of symmetry to evolve, distinct top/bottom, can be divided into multiple halves like a pie
a)
radial symmetry
b)
hydrostatic skeleton
c)
coelom
11.
Animal can be divided down the middle to form identical right and left halves
a)
coelom
b)
animal
c)
bilateral symmetry
d)
pseudocoelom
12.
Inner cell layer of embryonic cell layers
a)
pseudocoelom
b)
endoderm
c)
animal
d)
cephalization
13.
Third layer of cells between the ectoderm and endoderm, develop new types of tissues such as muscles
a)
mesoderm
b)
cephalization
c)
animal
d)
pseudocoelom
14.
Division of body into multiple segments, increase flexibility
a)
segmentation
b)
pseudocoelom
c)
exoskeleton
d)
animal
15.
Concentration of nerve tissue at one end of the body, forming a head region, first step in evolution of a brain
a)
exoskeleton
b)
cephalization
c)
animal
d)
notochord
16.
Pressure of fluid within a cavity providing stiffness, giving body internal support
a)
hydrostatic skeleton
b)
notochord
c)
vertebral column
d)
pseudocoelom
17.
Bell-shaped body and usually motile, one of two body plans in cnidarians
a)
pseudocoelom
b)
medusa
c)
animal
d)
ectoderm
18.
Aquatic, invertebrates, sponges, means pore-bearing
a)
ectoderm
b)
animal
c)
mesoderm
d)
Porifera
19.
Invertebrates, include jellyfish and coral, aquatic, most live in ocean, radial symmetry and tissues, slightly more complex than sponges
a)
Cnidaria
b)
mesoderm
c)
coelom
d)
animal
20.
Examples are flatworms, flat bodies, lack a respiratory system, invertebrates, show cephalization and bilateral symmetry, digestive system incomplete
a)
coelom
b)
animal
c)
Platyhelminthes
d)
hydrostatic skeleton
21.
Tubular body and is usually sessile, one of two body plans in cnidarians
a)
polyp
b)
hydrostatic skeleton
c)
animal
d)
radial symmetry
22.
Pump water into their body through their pores, collar cells filter out food
a)
filter feeder
b)
radial symmetry
c)
exoskeleton
d)
notochord
23.
Roundworms, complete digestive system, round body, pseudocoelom present, hydrostatic skeleton
a)
notochord
b)
Nematoda
c)
vertebrate
d)
vertebral column
24.
Internal skeleton
a)
endoskeleton
b)
vertebral column
c)
invertebrate
d)
bilateral symmetry
25.
Regrow segments (of the body) that break off
a)
regeneration
b)
bilateral symmetry
c)
segmentation
d)
notochord
26.
Hard outer shell, distinct head region, tentacles, muscular foot, mantle and radula, invertebrates, segmented bodies, examples include snails, scallops, squids
a)
notochord
b)
Mollusca
c)
animal
d)
vertebrate
27.
Closed circulatory system, excretory system consists of tubular nephridia, complete digestive system, brain, sensory organs, gills for gas exchange, examples would be segmented worms
a)
Annelida
b)
vertebrate
c)
exoskeleton
d)
animal
28.
Layer of tissue that lies between the shell and the body
a)
mantle
b)
exoskeleton
c)
notochord
d)
pseudocoelom
29.
Oldest known arthropods, marine, many segments with paired appendages
a)
pseudocoelom
b)
trilobite
c)
animal
d)
segmentation
30.
Largest phylum of invertebrates, 80% of all species living of Earth, include insects, spiders, lobsters, and centipedes
a)
segmentation
b)
radial symmetry
c)
Arthropod
d)
animal
100 %
