Site MapHelpFeedbackRotifers Quiz
Rotifers Quiz
(See related pages)



1

Rotifers and acanthocephalans were once included in the Phylum Aschelminthes, along with nematodes and other animal groups. However the similarities may be due to _______________________ rather than common ancestry.
2

The various aschelminth phyla are now split into 2 main groups: those that molt, and those that do not. Rotifers and acanthocephalans do not molt. What are the molting animals called?
3

Rotifers and acanthocephalans (traditional “aschelminths”) have a body cavity termed a _________________________. How is it formed?
4

Rotifers and acanthocephalans grow through increased cell size rather than increased cell number. This phenomenon of having a fixed number of cells is called ________.
5

What are the defining characteristics of rotifers?
6

What is the corona? mastax? trophi?
7

What is the typicalhabitat of most rotifers?
8

What is the unusual habitat of bdelloid rotifers?
9

Bdelloid rotifers, like tardigrades and nematodes in the same habitat, can undergo a latent state called ______________, which protects them from physiologically stressful condition such as _________, __________, and __________.
10

How do bdelloid rotifers reproduce?
11

Most rotifers (monogononts) reproduce asexually by the formation of _______ females by parthenogenesis. They can also reproduce sexually by the formation of ________ females.
12

What is cyclomorphosis? What environmental factors can induce this condition?
13

What are the defining characteristics of the Phylum Acanthocephala? What does “acantho” mean? What does “cephala” mean? What is the common name of these worms?
14

Where do acanthocephalans live? (What is their life style and mode of nutrition?)





To learn more about the book this website supports, please visit its Information Center.
(c)2003 McGraw-Hill Higher Education
Any use is subject to the Terms of Use and Privacy Policy.
McGraw-Hill Higher Education is one of the many fine businesses of The McGraw-Hill Companies.


Castro Marine BiologyOnline Learning Center

Home > Chapter 7 > Rotifers Quiz