Biology 150 Exam 3

26 Questions | By Dgibson0 | Last updated: Mar 21, 2022 | Total Attempts: 39

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Exam 3 - Sponges, Cnidarians, Rotifers, Annelids and Mollusca

Questions and Answers

1.

Spicules are made up of:
- A.
  
  NaO2
- B.
  
  CaCO3
- C.
  
  C2CO
- D.
  
  CaC2
2.

Hydra, unlike most Cnidarian, live in:
- A.
  
  Estuaries
- B.
  
  Fresh water
- C.
  
  Salt water
- D.
  
  Brackish water
3.

Hydra reproduce:
- A.
  
  Sexually
- B.
  
  Asexually
4.

Sponges habitat:
- A.
  
  Aquatic, parasitic and terrestrial
- B.
  
  Aquatic and terrestrial
- C.
  
  Aquatic
- D.
  
  Parasitic
5.

The gelatinous material between the inner and outer epidermis in sponges:
- A.
  
  Pharynx
- B.
  
  Mesohyle
- C.
  
  Mesoglea
- D.
  
  Mid-epidermis
6.

How do Annelidia sexually reproduce:
- A.
  
  Monecious and dioecious with internal fertilization
- B.
  
  Monecious and dioecious with external fertilization
- C.
  
  Monecious and dioecious
- D.
  
  Monecious with internal fertilization
7.

Obelia and Gonionemus both have this(these) stage(s):
- A.
  
  Polyp
- B.
  
  Medusa
- C.
  
  Polyp and Medusa
- D.
  
  None of these
8.

Which structure (in Cnidarians) releases a toxin to paralyze its prey:
- A.
  
  Choanocytes
- B.
  
  Pharynx
- C.
  
  Scolex
- D.
  
  Nematocysts
9.

Porifera sexual reproduction is:
- A.
  
  Monecious
- B.
  
  Dioecious
- C.
  
  Monecious and Dioecious
- D.
  
  Sponges don't reproduce sexually
10.

In sponges, the epidermis lines the:
- A.
  
  Incurrent canal, spongocoel and the outer surface
- B.
  
  Radial canal, spongocoel and the outer surface
- C.
  
  Incurrent canal, and the outer surface
- D.
  
  Spongocoel and the outer surface
11.

Segments in Annelidia can function independently:
- A.
  
  True
- B.
  
  False
12.

Collar cells in sponges:
- A.
  
  Digest food fragments and their flagella move to create water currents
- B.
  
  Digest food fragments
- C.
  
  Move flagella to create water surrents
- D.
  
  None of these
13.

Ancestrally, Cnidarians are most closely related to:
- A.
  
  Fungi
- B.
  
  Protists
- C.
  
  Plants
- D.
  
  Algae
14.

In Cnidarians, located between the epidermis and gastrodermis, is the:
- A.
  
  Mesohyle
- B.
  
  Mesoglea
- C.
  
  Pharynx
- D.
  
  Scolex
15.

Vertical slit in the terminal segment of Annelidia:
- A.
  
  Mouth
- B.
  
  Anus
- C.
  
  Prostomium
- D.
  
  Mantle
16.

Level of organization in sponges:
- A.
  
  Organ system
- B.
  
  Cell specialization
- C.
  
  Tissue
- D.
  
  Organ systems
17.

In sponges, collar cells line:
- A.
  
  The epidermis
- B.
  
  The incurrent canal
- C.
  
  The pore
- D.
  
  The radial canal
18.

Tiny bristlelike structures on the ventral structures of Annelidia:
- A.
  
  Nephridia
- B.
  
  Setae
- C.
  
  Scolex
- D.
  
  Ganglia
19.

Which phylum uses a hydrostatic coelom for body support:
- A.
  
  Platyhelminthes
- B.
  
  Annelidia
- C.
  
  Cnidaria
- D.
  
  Porifera
20.

In sponges, gemmules are:
- A.
  
  Released in favorable and unfavorable conditions
- B.
  
  Released in favorable conditions only
- C.
  
  Released in unfavorable conditions only
- D.
  
  Are not released at all
21.

Annelidia habitat:
- A.
  
  Aquatic, terrestrial, and parasitic
- B.
  
  Aquatic and parasitic
- C.
  
  Aquatic and terrestrial
- D.
  
  Aquatic
22.

How do Annelidia asexually reproduce:
- A.
  
  Budding
- B.
  
  None
- C.
  
  Fragmentation
- D.
  
  Transverse fission
23.

Sponge support structure:
- A.
  
  Spongin
- B.
  
  Spongin and spicules
- C.
  
  Spicules
- D.
  
  Spicules and scolex
24.

Both Scypha and Leucoselina have this body plan:
- A.
  
  Asconoid
- B.
  
  Syconoid
- C.
  
  Leuconoid
25.

What phylum has a body organization including bilateral symmetry, a head, segmentation, a complete gut and a coelom:
- A.
  
  Rotifera
- B.
  
  Mollusca
- C.
  
  Platyhelminthes
- D.
  
  Annelidia