Skip to ContentGo to accessibility pageKeyboard shortcuts menu
OpenStax Logo
Biology

Review Questions

BiologyReview Questions

4.

Mesohyl contains:

  1. a polysaccharide gel and dead cells
  2. a collagen-like gel and suspended cells for various functions
  3. spicules composed of silica or calcium carbonate
  4. multiple pores
5.

The large central opening in the Parazoan body is called the:

  1. gemmule
  2. spicule
  3. ostia
  4. osculum
6.

Cnidocytes are found in _____.

  1. phylum Porifera
  2. phylum Nemertea
  3. phylum Nematoda
  4. phylum Cnidaria
7.

Cubozoans are ________.

  1. polyps
  2. medusoids
  3. polymorphs
  4. sponges
8.

Annelids have a:

  1. pseudocoelom
  2. a true coelom
  3. no coelom
  4. none of the above
9.

Which group of flatworms are primarily ectoparasites of fish?

  1. monogeneans
  2. trematodes
  3. cestodes
  4. turbellarians
10.

A mantle and mantle cavity are present in:

  1. phylum Echinodermata
  2. phylum Adversoidea
  3. phylum Mollusca
  4. phylum Nemertea
11.

The rhynchocoel is a ________.

  1. circulatory system
  2. fluid-filled cavity
  3. primitive excretory system
  4. proboscis
12.

The embryonic development in nematodes can have up to __________ larval stages.

  1. one
  2. two
  3. three
  4. five
13.

The nematode cuticle contains _____.

  1. glucose
  2. skin cells
  3. chitin
  4. nerve cells
14.

Crustaceans are _____.

  1. ecdysozoans
  2. nematodes
  3. arachnids
  4. parazoans
15.

Flies are_______.

  1. chelicerates
  2. hexapods
  3. arachnids
  4. crustaceans
16.

Echinoderms have _____.

  1. triangular symmetry
  2. radial symmetry
  3. hexagonal symmetry
  4. pentaradial symmetry
17.

The circulatory fluid in echinoderms is _____.

  1. blood
  2. mesohyl
  3. water
  4. saline
Order a print copy

As an Amazon Associate we earn from qualifying purchases.

Citation/Attribution

This book may not be used in the training of large language models or otherwise be ingested into large language models or generative AI offerings without OpenStax's permission.

Want to cite, share, or modify this book? This book uses the Creative Commons Attribution License and you must attribute OpenStax.

Attribution information
  • If you are redistributing all or part of this book in a print format, then you must include on every physical page the following attribution:
    Access for free at https://openstax.org/books/biology/pages/1-introduction
  • If you are redistributing all or part of this book in a digital format, then you must include on every digital page view the following attribution:
    Access for free at https://openstax.org/books/biology/pages/1-introduction
Citation information

© Feb 14, 2022 OpenStax. Textbook content produced by OpenStax is licensed under a Creative Commons Attribution License . The OpenStax name, OpenStax logo, OpenStax book covers, OpenStax CNX name, and OpenStax CNX logo are not subject to the Creative Commons license and may not be reproduced without the prior and express written consent of Rice University.