Chapter 29

1. Animals are NOT
a. heterotroph.
b. autotroph.
c. eukaryotes.
d. multicellular.
e. all of the above

2. Most animal phyla live in
a. marine water.
b. fresh water.
c. arid land.
d. moist land.
e. rivers.

3. Radiata are _ and do not have a _.
a. tripoblastic/endoderm
b. tripoblastic/mesoderm
c. diploblastic/endoderm
d. diploblastic/mesoderm
e. diploblastic/ectoderm

4. Human zygotes undergo _ and we are therefore _ .
a. determinate cleavages/protostomes
b. indeterminate cleavages/deuterostomes
c. determinate cleavages/deuterostomes
d. indeterminate cleavages/protostomes
e. indeterminate cleavages/coelomates

5. Amoebocytes are
a. amoebae living in symbiosis with sponges.
b. reproductive cells of sponges.
c. food filtering cells in sponges.
d. mobile cells within sponges.
e. flagellaless stages of sponge cells.

6. Jellyfish are an example of
a. cnidaria.
b. medusas.
c. eumetazoas.
d. radiata.
e. all of the above

7. Tentacles of hydra have _ with stinging capsules _.
a. medusa/choanocytes
b. amoebocytes/nettles
c. cnidocytes/nematocysts
d. polyps/nematocysts
e. nematocysts/cnidarians

8. The medusa and the polyps represent
a. the diploid and haploid forms of Cnidaria.
b. the haploid and diploid form of cnidaria.
c. the haploid or diploid form of a cnidaria, depending on the class.
d. two types of haploid forms of cnidaria.
e. two types of diploid forms of cnidaria.

9. An important distinction between cnidaria and platyhelminthes is
a. the size.
b. the development of true tissues.
c. the formation of a gastrula stage.
d. the formation of a third germ layer.
e. the formation of a coelom.

10. What enables planarians to live in fresh water?
a. The diffusion of nitrogenous waste through the cells.
b. Flame cells that help waft fluids out of the body.
c. The development of eyespots.
d. The carnivorous feeding type.
e. The third germ layer.

11. Flukes that live in a human
a. reproduce asexually.
b. reproduce sexually.
c. are digested in the human intestines.
d. were introduced when the person ate snails.
e. have a symbiotic relationship with the human.

12. The pseudocoelomates do probably NOT have
a. homologous pseudocoelomes.
b. analogous pseudocoelomes.
c. a bilateral symmetry.
d. a mesoderm.
e. a complete digestive tract.

13. Parthenogenesis means that
a. the male organism is much smaller than the female organism.
b. the male organism can not feed itself.
c. eggs are not fertilized before they develop into a new generation.
d. fertilized eggs form resistant zygotes.
e. all of the above

14. Annelids use _ to remove waste from blood and the coelomic fluid.
a. lophophores
b. gills
c. metanephridia
d. gizzards
e. septa

15. Most species known to humans belong to the phylum of the
a. rotifera.
b. nematoda.
c. annelida.
d. arthropoda.
e. chelicerates.

16. Arthropods are characterized by
a. a cuticle.
b. extensive cephalization.
c. open circulatory system.
d. specialization of segments.
e. all of the above

17. Horseshoe crabs are the closest related to
a. lobsters.
b. chambered nautiluses.
c. trilobites.
d. spiders.
e. beetles.

18. Which of the following arthropoda appendages has a different origin than the other ones?
a. walking legs
b. mandibles
c. antennae
d. chelicerae
e. wings

19. Grubs are NOT
a. a larval stage.
b. an insect.
c. uniramians.
d. annelids.
e. an asexual generation.

20. During the Cambrian explosion
a. the majority of modern phyla evolved.
b. meteorite impact extinguished most species.
c. volcanic activity changed the species composition on earth.
d. most modern species evolved.
e. evolution of modern species began.