Introduction
to Animals Worksheet
Circle
the correct response.
1.
Animals are [ heterotrophs / autotrophs ]
2.
[ All / Most ] animals are multicellular.
3.
The cells in the skin of your hand are [ bigger than / the
same size as ] the cells in your heart.
4.
Organisms that have 2 copies of each chromosome are [mobile
/ diploid ]
5.
The absence of a cell wall allows animals [ mobility /
diploidy ]
6.
A hollow ball of cells that forms after fertilization is called a [
blastula / mesoderm ]
7.
In all animals except [ humans / sponges ] a zygote
undergoes divisions to become a blastula.
8.
The cells of animals are organized into functional units called [ blastula /
tissues ]
Matching:
|
9.
______ Ectoderm |
a.
lining of the digestive tract, digestive organs |
|
10.
______ Mesoderm |
b.
outer layer of skin and sense organs |
|
11.
______ Endoderm |
c.
most of the skeleton, muscles Match the body plan to its description |
|
12.
______ radial |
d.
body that is irregular shaped |
|
13.
______ bilateral |
e.
has a distinct right and left half |
|
14.
______asymmetry |
f.
body parts arranged around a central axis, like the spokes of a bicycle
wheel |
What
symmetry do these animals have?
15.
______________
16.
____________________
17.
Segmented animals are constructed from a series of repeating units called [segments
/vertebrates]
18.
Evidence of segmentation in human beings can be seen in the [
skin / backbone ]
Match
the name of the Phylum to the organism:
|
a.
vertebrates b.
segmented worms c.
flatworms d.
jellyfish e.
sea stars f.
sponges g.
clams h.
roundworms i.
insects |
19.
_____ Cnidaria 20.
______ Mollusca 21.
_____ Annelida 22.
_____ Chordata 23.
______Nematoda 24.
______Platyhelminthes 25.
______ Porifera 26.
______Arthopoda 27.
______Echinodermata |
Animal
Body Systems
For
each term below, indicate what body system it relates to. Body Systems
|
28.
Gastrovascular Cavity ___________________________ 29.
Ganglia ____________________________ 30.
Hermaphrodite ____________________________ 31.
Blood vessels ____________________________ 32.
Exoskeleton ____________________________ 33.
Gills 34.
Anus 35.
Nerve Net ____________________________ 36.
Hydrostatic ____________________________ 37.
Gametes ____________________________ 38.
Flame cells 39.
radula 40.
trachea & spiracles |
|
Revised from : www.biologycorner.com