Phylum Nematoda Quiz

12 Questions | By Colleennicole | Updated: Dec 9, 2022 | Attempts: 2873

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In this quiz about roundworms, learn all about these diverse animal phyla – known scientifically as the nematodes - which inhabit a broad range of environments and boast over 25,000 different species. What can you tell us so far?

Questions and Answers

1.

All nematodes contain a(n) :
- A.
  
  Incomplete digestive tract
- B.
  
  Biradial symmetry
- C.
  
  Cuticle
2.

One function of a cuticle is to maintain internal __________ pressure.
3.

Another function of a cuticle is to provide ___________ _________.
4.

And another function of the cuticle is to keep the host from________ the roundworm.
5.

Nematodes move by _________, using a ___________ muscle. They flail.
6.

A pseudocoelum is a fluid filled cavity containing ________ organs and forming a ________ skeleton.
7.

Most nematodes are
- A.
  
  Mononecious
- B.
  
  Dioecious
- C.
  
  Asexual
8.

Males are smaller than females and may have an accessory copulatory structure.
- A.
  
  True
- B.
  
  False
9.

Fertilized eggs hatch into larvae, and then undergo __ molts to become an adult.
10.

Ecolysis is how a nematode's ________ is shed.
11.

The classes are based on the presence or absence of ___________.
12.

Phasmids are _______ organs located near the anus that function in ________ reception.