Biology 150 Exam 3
Exam 3 - Sponges, Cnidarians, Rotifers, Annelids and Mollusca
- 1.
Spicules are made up of:
- A.
NaO2
- B.
CaCO3
- C.
C2CO
- D.
CaC2
Correct Answer
B. CaCO3 -
- 2.
Hydra, unlike most Cnidarian, live in:
- A.
Estuaries
- B.
Fresh water
- C.
Salt water
- D.
Brackish water
Correct Answer
B. Fresh water -
- 3.
Hydra reproduce:
- A.
Sexually
- B.
Asexually
Correct Answer
B. Asexually -
- 4.
Sponges habitat:
- A.
Aquatic, parasitic and terrestrial
- B.
Aquatic and terrestrial
- C.
Aquatic
- D.
Parasitic
Correct Answer
C. Aquatic -
- 5.
The gelatinous material between the inner and outer epidermis in sponges:
- A.
Pharynx
- B.
Mesohyle
- C.
Mesoglea
- D.
Mid-epidermis
Correct Answer
B. Mesohyle -
- 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
Correct Answer
A. Monecious and dioecious 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
Correct Answer
C. Polyp and Medusa -
- 8.
Which structure (in Cnidarians) releases a toxin to paralyze its prey:
- A.
Choanocytes
- B.
Pharynx
- C.
Scolex
- D.
Nematocysts
Correct Answer
D. Nematocysts -
- 9.
Porifera sexual reproduction is:
- A.
Monecious
- B.
Dioecious
- C.
Monecious and Dioecious
- D.
Sponges don't reproduce sexually
Correct Answer
A. Monecious -
- 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
Correct Answer
A. Incurrent canal, spongocoel and the outer surface -
- 11.
Segments in Annelidia can function independently:
- A.
True
- B.
False
Correct Answer
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
Correct Answer
A. Digest food fragments and their flagella move to create water currents -
- 13.
Ancestrally, Cnidarians are most closely related to:
- A.
Fungi
- B.
Protists
- C.
Plants
- D.
Algae
Correct Answer
B. Protists -
- 14.
In Cnidarians, located between the epidermis and gastrodermis, is the:
- A.
Mesohyle
- B.
Mesoglea
- C.
Pharynx
- D.
Scolex
Correct Answer
B. Mesoglea -
- 15.
Vertical slit in the terminal segment of Annelidia:
- A.
Mouth
- B.
Anus
- C.
Prostomium
- D.
Mantle
Correct Answer
B. Anus -
- 16.
Level of organization in sponges:
- A.
Organ system
- B.
Cell specialization
- C.
Tissue
- D.
Organ systems
Correct Answer
B. Cell specialization -
- 17.
In sponges, collar cells line:
- A.
The epidermis
- B.
The incurrent canal
- C.
The pore
- D.
The radial canal
Correct Answer
D. The radial canal -
- 18.
Tiny bristlelike structures on the ventral structures of Annelidia:
- A.
Nephridia
- B.
Setae
- C.
Scolex
- D.
Ganglia
Correct Answer
B. Setae -
- 19.
Which phylum uses a hydrostatic coelom for body support:
- A.
Platyhelminthes
- B.
Annelidia
- C.
Cnidaria
- D.
Porifera
Correct Answer
B. Annelidia -
- 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
Correct Answer
C. Released in unfavorable conditions only -
- 21.
Annelidia habitat:
- A.
Aquatic, terrestrial, and parasitic
- B.
Aquatic and parasitic
- C.
Aquatic and terrestrial
- D.
Aquatic
Correct Answer
A. Aquatic, terrestrial, and parasitic -
- 22.
How do Annelidia asexually reproduce:
- A.
Budding
- B.
None
- C.
Fragmentation
- D.
Transverse fission
Correct Answer
D. Transverse fission -
- 23.
Sponge support structure:
- A.
Spongin
- B.
Spongin and spicules
- C.
Spicules
- D.
Spicules and scolex
Correct Answer
B. Spongin and spicules -
- 24.
Both Scypha and Leucoselina have this body plan:
- A.
Asconoid
- B.
Syconoid
- C.
Leuconoid
Correct Answer
A. Asconoid -
- 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
Correct Answer
D. Annelidia -
- 26.
In Annelidia, the fleshy lobe that hangs over the mouth is called the:
- A.
Flame cells
- B.
Prostomium
- C.
Nephridium
- D.
Choanocytes
Correct Answer
B. Prostomium -
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Mar 21, 2022Quiz Edited by
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Apr 14, 2010Quiz Created by
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