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Nematodes Quiz
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1

What does the name “nematode” mean? What is the common name of the phylum?
2

What is the defining characteristic of the phylum?
3

Why are nematodes considered to be the most abundant (numerous) multicellular animals alive today?
4

Nematodes were previously listed in which phylum (which is no longer recognized)?
5

What is the name of the group of phyla of molting animals, which now includes Nematoda?
6

The epidermis secretes a noncellular cuticle composed of _________________. The epidermis itself is multinucleate or _________________.
7

Nematodes exhibit a constant cell number in the adult; this is called ____________, as in rotifers.
8

Which type of muscle is absent from the body wall? How does this affect movement?
9

What is unusual about the innervation of muscles and nerves in nematodes?
10

Is the digestive system complete (mouth --> anus) or incomplete (blind gut = gastrovascular cavity)?
11

Identify amphids, phasmids, papillae. What are their functions?
12

How do most nematodes reproduce?
13

Why are parasitic nematodes important?
14

What is the largest (longest) parasitic nematode?
15

Why are kids in daycare subject to pinworm infections?
16

How are nematodes beneficial?





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