BIOLOGY 201 - MULTIPLE CHOICE QUESTIONS (BY CHAPTER)



1. Fungi are:

A. heterotrophic B. eukaryotic C. made of hyphae

D. saprobes E. all of the above

2. Which of the following phylogenetic groups within the animal kingdom encompasses all the others in the list?

A. rotifera B. deuterostomes C. bilateria

D. arthropoda E. protostomes

3. Bilateral symmetry in the animal kingdom is best correlated with:

A. an ability to sense equally in all directions

B. an ability to capture food from a sessile position

C. symbiotic relationships

D. ventral and dorsal differentiation

E. motility and active predation and escape

4. Different lineages of the Class Reptilia are believed to have given rise to which of the following animal groups?

A. Birds B. Amphibians C. Bony fishes

D. Mammals E. Both (A) and (D)

5. Medusa and polyp body plans are typical of which group:

A. Parazoa B. Cnidaria C. Echinoderms

D. Platyhelminthes E. Porifera

6. Which of the following is radially symmetrical?

A. a donut B. an automobile C. a spoon

D. a dog E. a submarine sandwich (a.k.a. hoagie, sub, grinder, etc.)

7. Unlike other animals, sponges:

A. are unicellular. B. possess cell walls. C. lack true tissues.

D. exhibit bilateral symmetry. E. are prokaryotic.

8. Octopi are most closely related to which of the following organisms?

A. clams B. jellyfish C. starfish

D. earthworms E. crabs

9. There are three major groups of mammals, categorized on the basis of their

A. size. B. habitat. C. method of locomotion.

D. the presence or absence of hair. E. method of reproduction.

10. The innovation that freed vertebrates from being tied to water for reproduction and allowed them to radiate into diverse terrestrial environments was the development of

A. ecdysis. B. the placenta. C. lateral line system.

D. bony appendages. E. amniotic egg.

11. Which of the following classifications would not apply to both dogs and humans?

A. Sub-phylum Vertebrata B. Kingdom Animalia C. Phylum Chordata

D. Order Primates E. Class Mammalia

12. A child brought home a strange animal it found outside under a rock. It had moist skin, a complete digestive tract, a ventral nerve cord, and had gone through torsion. It must be:

A. a lancelet. B. a crustacean. C. a mollusk.

D. a roundworm. E. an annelid.

13. You are eumetazoan, bilateral, and a protostome. What other clade must you belong to in order to be a rotifera?

A. radiata B. cnidaria

C. mollusca D. lophotrochozoa

E. ecdysozoa

14. Animals are:

A. multicellular eukaryotic heterotrophs B. unicellular eukaryotic heterotrophs

C. multicellular prokaryotic heterotrophs D. multicellular eukaryotic autotrophs

E. unicellular prokaryotic heterotrophs

15. The body of a fungus (with the exception of yeast) consists of threadlike _____________ , which form a network called a _____________.

A. mycelia . . . dikaryon B. hyphae . . . chytrid

C. mycelia . . . hypha D. hyphae . . . mycelium

E. sporangia . . . dikaryon

16. Based on our current understanding of the evolutionary relationships among organisms, humans are most closely related to:

A. ray-finned fish B. amphibians C. osteichthyes

D. reptiles E. echinodermata

17. Insects are typically characterized by all of the following EXCEPT:

A. malphigian tubules B. chelicerata C. wings

D. A head, thorax, and abdomen E. antennae

18. Unlike placental mammals, both monotremes and marsupials:

A. are found in Australia and Africa B. lack nipples

C. include only insectivores and herbivores D. lay eggs

E. have some embryonic development outside the mother's uterus

19. Fungi are classified on the basis of

A. their source of food. B. whether they form molds. C. their sexual stage.

D. their commercial use. E. the number of nuclei that are found in a dikaryon.

20. The Chelicerata:

A. have malpighian tubules B. have three body regions: head, thorax, abdomen

C. have anterior appendages modified as pincers or fangs

D. undergo complete metamorphosis during their life cycles

E. have all of the above (A-D) features

21. The greatest number of described species is found in which of the following groups of organisms?

A. Phylum Arthropoda B. Phylum Mollusca C. Kingdom Fungi

D. Class Insecta E. Phylum Chordata

22. The symbiotic association between photosynthetic organisms (algae or cyanobacteria) and fungi is known as a:

A. Mushroom B. Mold C. Mycorrhizae

D. Lichen E. Yeast

23. Which of the following doesn’t undergo mitosis?

a. Moss b. Dinoflagellate c. Mosquito d. Plasmodium e. Monkey

24. Which of the following is false regarding mitosis and meiosis?

a. Mitosis produces daughter cells with the same ploidy level whereas meiosis produces daughter cells with half the ploidy level.

b. Mitosis provides heritability but not variability whereas meiosis provides both heritability and variability.

c. Mitosis is present in all somatic cells and germ cells whereas meiosis is present only in germ cells.

d. none of the above

e. all of the above

25. A cell has 250 chromosomes. After the cell undergoes meiosis, how many daughter cells are formed and how many chromosomes does each cell have?

A. 2, 250 B. 4, 125 C. 4, 250 D. 2, 125 E. 2, 500

26. Which of the following is not a phase of mitotic phase of cell cycle?

A. Prophase B. Interphase C. Prometaphase D. Telophase E. Anaphase

27. The chromosome is attached to the spindle fiber at the following structure

A. centrosome B. centromere C. Kinetochore D. microtubule

28. Which of the following is not one of the check points in cell cycle?

A. G1 checkpoint B. S checkpoint C. M checkpoint D. G2 checkpoint

29. Which of the following doesn’t occur during mitosis?

A. condensation of the chromosomes

B. replication of DNA

C. spindle formation

D. separation of the spindle poles

30. One difference between cancer cells and normal cells is that cancer cells

A. are unable to synthesize DNA

B. are arrested at the S phase of the cell cycle

C. continue to divide even when they are tightly packed together

D. are always in the M phase of the cell cycle

31. A particular cell has half as much DNA as some other cells in a mitotically active tissue. The cell in question is most likely in

A. G1 B. G2 C. metaphase D. Anaphase E. prophase

32. Among the characteristics unique to animals is

a. gastrulation.

b. multicellularity.

c. sexual reproduction.

d. flagellated sperm.

e. heterotrophic nutrition.

33. Acoelomates are characterized by

a. the absence of a brain.

b. the absence of mesoderm.

c. deuterostome development.

d. a coelom that is not completely lined with mesoderm.

e. a solid body without a cavity surrounding internal organs.

34. Ectoderm can give rise to _____; mesoderm can give rise to _____; endoderm can give rise to _____.

a. muscle ... the outer covering of the animal ... the central nervous system

b. the lining of the digestive tract ... muscle ... the outer covering of the animal

c. the central nervous system ... the outer covering of the animal ... the lining of the digestive tube

d. muscle ... the outer covering of the animal ... the lining of the digestive tube

e. the central nervous system ... muscle ... the lining of the digestive tube

35. A pseudocoelomate animal is one in which the body cavity is _____.

a. bounded completely by mesoderm

b. filled by a solid mass of mesoderm

c. bounded completely by endoderm

d. bounded partly by ectoderm

e. bounded partly by mesoderm

36. Protostomous animals are those in which the _____.

a. blastopore forms the mouth

b. ectoderm forms the muscles

c. digestive tract is incomplete

d. blastophore forms the anus.

37. One of the two taxa that molecular studies divide the protostomes into is called Ecdysozoa. What characteristic is this taxon named for?

a. a horseshoe-shaped crown of ciliated tentacles

b. a trochophore larva

c. the secretion of stiff external skeletons that must be shed to allow for growth

d. segmented bodies

38. Coenocytic fungi

a. are divided into cells by septa and contain multiple nuclei.

b. has each cell containing 1 nucleus each.

c. has each cell containing multiple cytoplasm.

d. are aseptate with continuous cytoplasm containing multiple nuclei.

39. Mycorrhizae

A. are fungi present in mutualism with algae

B. are the reproductive structures in fungi

C. are fungi covering the roots of plants that are beneficial to plants

D. are parasitic fungi that harms plants

40. Trichinosis is a disease caused by a/an

A. Rotifera B. Platyhelminthes C. Nematoda D. Fungus

E. Annelida

41. Sharks and rays _______.

a. have skeletons made of cartilage

b. are gnathostomes

c. have true jaws

d. all of the above

42. A water vascular system can be found in _______.

a. myriapods

b. insects

c. crustaceans

d. echinoderms

43. Segmented earthworms belong to the _______.

a. Phylum Platyhelminthes

b. Phylum Annelida

c. Phylum Polychaetes

d. None of the above

44. What gave vertebrates an advantage to colonizing land?

a. being warm-blooded

b. the amniotic egg

c. development of gills

d. indeterminant cleavage

45. Protosomes undergo _______ and ______ cleavage.

a. radial and indeterminant

b. radial and determinant

c. spiral and indeterminant

d. spiral and determinant

46. Chitin can be found in _______.

a. cell walls of fungi

b. exoskeleton of arthropods

c. cell walls of plants

d. both a and b

47. Humans are _______ animals.

a. exothermic

b. endothermic

c. isothermic

d. mesothermic

48. Reptiles, birds, amphibians, and humans are all amniotes.

a. true

b. false

49. A tracheal system is a system used for _______.

a. respiration

b. excretion

c. digestion

d. none of the above

50. The body regions of an insect are _______.

a. head, body, wings

b. head, abdomen

c. thorax, abdomen, wings

d. head, thorax, abdomen

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