2. Which of the following cell types and associated functions do not match?

A. Collar cells: calcareous structures for support

12. What do deposit-feeding animals feed on?

E. Organic matter that settles on the bottom

4. What is the food source for sponges and all other filter feeders?

B. All particulate matter suspended in water

10. Comb jellies are:

C. Distinguished by eight bands of cilia.

6. Which of the following is not a feature common to all cnidarians?

D. Complete digestive tract with mouth and anus

5. The larval stage of an animal is best defined as the:

C. Early stage of development of an organism.

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marine animals w/out backbone

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Questions 15

Answers

1
14. Which of the follow is most likely to make you sick from sashimi and ceviche?
E. Nematodes
D. Ribbon worms
C. Flatworms
B. Cnidarians
2
2. Which of the following cell types and associated functions do not match?
B. Osculum: opening through which water leaves
A. Collar cells: calcareous structures for support
D. Spongin: fibers for support
C. Pore cells: opening through which water enters
3
15. In which phylum do adult organisms exhibit bilateral symmetry?
A. Arthropoda
B. Cnidaria
C. Ctenophora
D. Echinodermata
4
7. Which of the following is an example of an anthozoan?
D. Sea wasp
B. Colonial hydroid
E. Reef coral
C. Sea nettle jellyfish
5
12. What do deposit-feeding animals feed on?
E. Organic matter that settles on the bottom
C. Plankton that passively enters the digestive system
B. Particulate matter in the water
D. Live prey
6
4. What is the food source for sponges and all other filter feeders?
B. All particulate matter suspended in water
A. Invertebrates only
D. Dead vertebrates
C. Particulate matter that deposits on the bottom only
7
10. Comb jellies are:
D. Colonial animals.
C. Distinguished by eight bands of cilia.
B. Similar to a cnidarian polyp.
A. Bilaterally symmetrical.
8
13. These animals are most similar to the first species of multicellular organisms.
A. Sponges
D. Ribbon worms
C. Flatworms
B. Cnidarians
9
9. Free-floating cnidarians like jellyfish are referred to as having a ________ type form.
D. Medusa
A. Polyp
C. Bilateral
B. Benthic
10
11. Comb jellies are classified as:
B. Ctenophores.
A. Cnidarians.
D. Sipunculans.
C. Platyhelminthes.
11
8. With regards to acquiring food, most cnidarians are:
D. Herbivores.
A. Filter feeders.
C. Carnivores.
B. Parasites.
12
6. Which of the following is not a feature common to all cnidarians?
A. Presence of nematocysts
B. Multicellular
C. Radial symmetry
D. Complete digestive tract with mouth and anus
13
1. Which of the following is not a characteristic of animals (kingdom Animalia)?
A. They can be eukaryotic and multicellular.
D. Some lack a backbone.
C. Some are autotrophs.
B. Most are multicellular.
14
5. The larval stage of an animal is best defined as the:
B. Early colony of cells of freshwater sponges.
A. Immature stage that is able to reproduce.
C. Early stage of development of an organism.
D. Sperm cell that lives free in the water.
15
3. Sponges are a diverse group, but all sponges:
E. Are multicellular.
D. Have nematocysts.
B. Reproduce by asexual reproduction only.
C. Have specialized circulatory organs.

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