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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
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