Critters and such

Name: ______________________   Date: ____________

Write the missing letters on the lines to finish each word.

1.
a i a
2.
g
Respiratory organ of aquatic animals that breathe oxygen dissolved in water
3.
s e g
4.
a h
Air-breathing arthropods characterized by simple eyes and four pairs of legs
5.
i n e e
Any animal lacking a backbone or notochord
6.
s p
Coins collectively (plural)
7.
a r o
8.
m m
9.
t x
Study of the general principles of scientific classification
10.
b i e
11.
m o p s
The marked and rapid transformation of a larva into an adult that occurs in some animals
12.
t e
13.
s y
An attribute of a shape or relation
14.
m o
15.
t o
16.
c a i
Tough elastic tissue
17.
p u
The major taxonomic group of animals and plants
18.
v e
19.
c a
To arrange or order by ___ or categories
20.
p
An insect in the inactive stage of development intermediate between larva and adult
21.
v t b
22.
c d a
23.
r i
Pneumatic tire that has ___-ply casing
24.
m k