Unit 3 Practice Test
Fungi, Sponges, Cnidarians
Supplemental Instruction
Iowa State University
Leader:
Course:
Instructor:
Date:
Breanna
BIOL 211 (3)
Dr. Colbert
10/14/09
1. Fungi are _____________ organisms.
a. Chemoautotrophic
b. Mixotrophic
c. Chemoheterotrophic
d. Photoheterotrophic
2. Fungi that consist of a continuous mass containing hundreds or thousands of nuclei
are known as _______________.
a. Septic
b. Coenocytic
c. Dikaryon
d. Chytrids
3. The hyphae of parasitic fungi that are modified to penetrate and absorb nutrients
from host tissue are called
a. Haustoria
b. Asci
c. Mycorrhizae
d. Septa
4. Which choice below generally represents the correct order of events in fungal
sexual reproduction?
a. Karyogamy, meiosis, plasmogamy, germination
b. Meiosis, plasmogamy, karyogamy, germination
c. Plasmogamy, meiosis, germination, karyogamy
d. Plasmogamy, karyogamy, meiosis, germination
5. During what stage of fungal reproduction are diploid cells produced?
a. Karyogamy
b. Meiosis
c. Dikaryotic stage
d. Plasmogamy
6. Which feature below is unique to chytrids?
a. Asci (spore-producing sacs)
b. Zoospores (flagellated spores)
c. Cell walls made of chitin
d. Conidia (asexual spores)
7. What is the major feature of glomeromycetes?
a. Mycorrhizae
b. Arbuscules
c. Ascocarps
d. Soredia
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8. What is the structure illustrated below?
a. Zygosporangium
b. Ascospore
c. Sporangium
d. Soredia
9. An ascus is _______________.
a. A saclike structure containing spores
b. An asexual spore-producing structure on a stalk
c. A club-shaped cell with spores on its outer surface
d. A cup-shaped structure containing many spore-producing cells on the gill of a
mushroom
10. Lichens are ______________.
a. Mutualistic associations of fungi and plant roots
b. Predatory fungi
c. The sexual state of deuteromycetes
d. Symbiotic associations of photosynthesizers and fungi
11. What type of lichen is illustrated in the photo below?
a. Foliose
b. Fruticose
c. Crustose
d. Shrublike
12. A dramatic example of the pathogenicity of certain fungi is the virtual elimination of
the American elm by __________.
a. Ergots
b. An ascomycete
c. A shelf fungue
d. A rust
13. During the development of most animals, cleavage leads to _______________.
a. The formation of a zygote
b. A multicelled blastula
c. The formation of a gastrula
d. Fertilization
14. Which of the following correctly lists the embryonic stages in the order that they
develop?
a. Blastula, cleavage, gastrula, gastrulation
b. Cleavage, gastrula, gastrulation, blastula
c. Cleavage, blastula, gastrulation, gastrula
d. Gastrulation, gastrula, cleavage, blastula
15. Unlike other animals, sponges _______________.
a. Are unicellular
b. Possess cell walls
c. Lack true tissues
d. Exhibit bilateral symmetry
16. What phylum do sponges belong to?
a. Calcarea
b. Cnidaria
c. Silicea
d. Answers A and C
17. A true coelom is _______________.
a. A body cavity lined with tissues derived from the endoderm
b. A body cavity lined with endoderm and mesoderm
c. A body cavity lined with mesoderm
d. An abdominal body cavity
18. A pseudocoelomate animal is one in which the body cavity is _______________.
a. Bounded completely by mesoderm
b. Bounded completely by endoderm
c. Bounded partly by ectoderm
d. Formed from mesoderm and endoderm
19. Which one of the following is characteristic of protostomes?
a. The blastopore forms the anus
b. Ectoderm forms the muscles
c. The blastopore forms the mouth.
d. They are diploblastic
20. Which of the following is true about the phylum Cnidaria?
a. They are eumetazoans
b. They are diploblastic
c. They have organs specifically for reproduction and digestion
d. All of the above
21. Through what means do coral animals capture their food?
a. Tentacles that trap food particles
b. Absorption of predigested food through their cuticle
c. Dinoflagellates, photosynthetic protists that live in the coral’s tissues.
d. A and C
22. Some cnidarians go through both a motile and sessile (attached) stage during their
life cycle. The attached stage is called a(n) __________.
a. Embryo
b. Medusa
c. Larva
d. Polyp
23. Which of the following is a characteristic of sponges?
a. They have collar cells
b. They consist of two layers of cells with a noncellular gelatinous layer
between them.
c. They have holes, or pores, in specialized cells, through which water enters
d. All of the above
24. Sponges feed by _______________.
a. Filtering small particles from water
b. Scraping bacteria and algae from hard substrates
c. Paralyzing small crustaceans with stinging cells
d. Absorbing nutrients from the guts of their hosts
25. What would be on the tentacles of this species of box jellyfish?
a. Choanocytes
b. Cnidocytes
c. Cnidocytes that contain nematocysts
d. Nematocysts
26. What causes coral bleaching?
a. Loss of nutrients
b. Predation
c. Water cooling
d. Loss of dinoflagellates
27. What kind of digestive system do cnidarians have?
a. Complete
b. Incomplete
c. Partial
d. Pseudo
28. What are sponges made of?
a. Spicules and Spongin
b. Calcium carbonate and silica
c. Protein only
d. Answers A and B