Hi folks - Here are some selected questions from exam 2 last year that apply to exam 2 this year. Try , also, the questions at the end of the chapters and the "Biology Place".

BIOL 1108 EXAM II MARCH 1, 2000 Dr. Barstow

1. Important terrestrial adaptations that evolved exclusively in seed plants include all of the following except

  1. pollination
  2. transport of water through vascular tissue
  3. retention of the gametophyte plant within the sporophyte
  4. dispersal of new plants by seeds
  5. retention of spores by the parent sporophyte

2. All of the following plant structures are adaptations specifically for a terrestrial environment EXCEPT

  1. roots.
  2. xylem.
  3. cell walls.
  4. waxy cuticle.
  5. seeds.

5. Which of the following is an ongoing trend in the history of land plants?

  1. a decrease in the size of the leaf
  2. the reduction of the gametophyte phase of the life cycle
  3. the elimination of sperm cells or sperm nuclei
  4. avoiding being eaten by dinosaurs
  5. the replacement of roots by rhizomes

6. Which of the following flower parts develops into a fruit after pollination?

  1. stigma
  2. style
  3. ovule
  4. ovary
  5. receptacle

7. Embryo sac is to _________ as _________ is to male gametophyte

  1. embryo sac; ovule
  2. ovule; sporophyte
  3. anther; seed
  4. petal; sepal
  5. female gametophyte; pollen

8. The product of meiosis in plants is always which of the following?

  1. spores
  2. eggs
  3. sperm
  4. seeds
  5. Both b and c are correct.

9. All of the following are features responsible for the evolutionary success of angiosperms EXCEPT

  1. a triploid endosperm.
  2. an ovary that becomes a fruit.
  3. animal pollination.
  4. a reduced sporophyte phase.
  5. double fertilization.

 

10. How many sperm nuclei are needed for the double fertilization of angiosperms?

  1. 1 (for the egg)
  2. 2 (1 for the egg, 1 for the polar nuclei)
  3. 4 (2 for each embryo sac)
  4. 5 (1 for the egg, 2 for each of the polar nuclei)
  5. 3 (2 for the egg, 1 for the polar nuclei, thus making a 3n nucleus)

11. A perfect flower is CORRECTLY described as a flower that

  1. has no sepals.
  2. has fused carpels.
  3. is on a dioecious plant.
  4. has no endosperm.
  5. has both stamens and carpels.

12. Which of the following is the CORRECT sequence during alternation of generations in a flowering plant?

  1. sporophyte - meiosis - gametophyte - gametes - fertilization - diploid zygote
  2. sporophyte - mitosis - gametophyte - meiosis - sporophyte
  3. haploid gametophyte - gametes - meiosis - fertilization - diploid sporophyte
  4. sporophyte - spores - meiosis -gametophyte - gametes
  5. haploid sporophyte - spores - fertilization - diploid gametophyte

 

13. What happens after double fertilization in angiosperms?

  1. the endosperm develops into a diploid nutrient tissue.
  2. a triploid zygote is formed.
  3. both a diploid embryo and triploid endosperm are formed.
  4. two embryos develop in every seed.

14. Which of the following cell types is least likely to have a secondary wall?

  1. sclerenchyma cell
  2. parenchyma cell
  3. fiber cell
  4. tracheid
  5. scleried

15. All of the following cell types are correctly matched with their functions EXCEPT

  1. mesophyll - photosynthesis.
  2. guard cell - regulation of transpiration.
  3. sieve - tube member - translocation.
  4. vessel element - water transport.
  5. companion cell - formation of secondary xylem and phloem.

16. All of the following are derived from ground meristem EXCEPT

  1. collenchyma.
  2. sclerenchyma.
  3. parenchyma.
  4. sclereids.
  5. phloem.

17. Which of the following tissues is INCORRECTLY matched with its characteristics?

  1. collenchyma - uniformly thick - walled supportive tissue
  2. epidermis - protective outer covering of plant body
  3. sclerenchyma -heavily lignified secondary walls
  4. meristematic tissue - undifferentiated tissue capable of cell division
  5. parenchyma - thin - walled, loosely packed, unspecialized cells

18. Which of the following is TRUE about secondary growth in plants?
  1. Flowers may have secondary growth.
  2. Secondary growth is a common feature of dicot leaves.
  3. Secondary growth is produced by both the vascular cambium and the cork cambium.
  4. Primary growth and secondary growth alternate in the life cycle of a plant.
  5. Plants with secondary growth are typically the smallest ones in an ecosystem.
    6.

20. Which of the following elements is INCORRECTLY paired with its function in a plant?

  1. nitrogen - component of nucleic acids, proteins, hormones, coenzymes
  2. magnesium - component of chlorophyll; activates many enzymes
  3. phosphorus - component of nucleic acids, phospholipids, ATP, several coenzymes
  4. potassium - cofactor functional in protein synthesis; osmosis; operation of stomata
  5. sulfur - component of DNA; activates some enzymes

 

28. A water molecule could move all the way through a plant from soil to root to leaf to air and pass through a living cell only once. This living cell would be a part of which structure?

  1. the Casparian strip
  2. a guard cell
  3. the root epidermis
  4. the endodermis
  5. the root cortex

30. Many biologists suspect that the rapid diversification of bilateral phyla during the Cambrian was

  1. triggered by declining concentrations of atmospheric carbon dioxide
  2. associated with variation in patterns of embryonic development
  3. possible once cleavage evolved
  4. the result of increased solar radiation and an accelerated mutation rate

31. Which of the following is NOT generally an animal characteristic?

  1. nervous and muscle tissue
  2. unique types of intercellular junctions such as tight and gap
  3. autotrophic nutrition
  4. sexual reproduction
  5. multicellularity

32. All of the following animal groups have evolved terrestrial life forms EXCEPT

  1. Mollusca.
  2. Crustacea
  3. Echinodermata
  4. Arthropoda
  5. Vertebrata

35. Which of the following is an important distinction between a coelomate and a pseudocoelomate?

  1. The former has a body cavity, while the latter has a solid body.
  2. The former contains tissues derived from mesoderm, while the latter has no such tissue.
  3. The former has a body cavity completely lined by mesodermal tissue, while the latter’s body cavity does not.
  4. The former has a complete digestive system with mouth and anus, while the latter has a digestive tract with only one opening.
  5. The former has a gut that lacks suspension within the body cavity, while the latter has mesenteries that hold the digestive system in place.

36. A radially symmetrical animal that has two embryonic germ layers belongs to which phylum?

  1. Porifera (parazoa)
  2. Cnidaria
  3. Platyhelminthes
  4. Aschelminthes
  5. Echinodermata

37. Which of the following are NOT found in sponges?
  1. oscula
  2. spongocoels
  3. cnidocytes
  4. spicules
  5. amoebocytes

38. Which molluscan class includes clams?

  1. Polyplacophora
  2. Bivalvia
  3. Cephalopoda
  4. Gastropoda
  5. None of the above; clams are not mollusks.

39. Which characteristic is shared by cnidarians and flatworms?

  1. flame cells
  2. radial symmetry
  3. a gut with a single opening
  4. dorsoventrally flattened bodies

 

40. While snorkeling, a student observes an active marine animal that has a series of muscular tentacles bearing suckers associated with its head. There is no evidence of segmentation, but a pair of large, well-developed eyes are evident. The student is observing animal belonging to the class

  1. Gastropoda.
  2. Cephalopoda.
  3. Polyplacophora.
  4. Polychaeta.
  5. Bivalvia.

41. The possession of two pairs of antennae will distinguish

  1. spiders from insects.
  2. crustanceans from insects.
  3. millipedes from centipedes.
  4. millipedes from insects.
  5. insects from centipedes.

42. What is one characteristic that separates chordates from all other animals?

  1. true coelom
  2. hollow dorsal nerve cord
  3. blastopore, which becomes the anus
  4. bilateral symmetry
  5. segmentation

43. Which one of the following has a two-chambered heart?

  1. Osteichthyes
  2. Amphibia
  3. Reptilia
  4. Aves
  5. Mammalia

 

44. Which sequence of evolutionary relationships is consistent with the fossil record?

  1. reptiles - amphibians - birds - fishes
  2. reptiles - birds - fishes - amphibians
  3. fishes - amphibians - reptiles - birds
  4. fishes - birds - reptiles - amphibians
  5. reptiles - birds - amphibians - fishes

45. The amniote egg first evolved in which of the following group?

  1. fish
  2. bird
  3. reptiles
  4. amphibians
  5. egg-laying mammals (monotremes)

 

46. Which of the following are the only modern animals that may have descended directly from dinosaurs?

  1. lizards
  2. crocodiles
  3. snakes
  4. birds
  5. mammals

 

49. The characteristics exhibited by both chimpanzees and humans which suggest a common ancestor are:

  1. capacity for walking upright, stereoscopic visions, and tool usage.
  2. capacity for walking upright, social behavior, and a type of language.
  3. nostrils which open downward, stereoscopic vision, and social behavior.
  4. opposable thumbs, a type of language, and tool usage.
  5. social behavior, a type of language, and tools usage.

50. All of the following are characteristics common to all members of the Order Primates EXCEPT:

  1. arboreal habitats.
  2. intensive parental care with single births as the rule.
  3. hands with five digits and opposable thumbs.
  4. limber shoulder joints.
  5. stereoscopic vision.

 

Answer key

1. B

11. E

21

31. C

41. B

2. C

12. A

22

32. C

42. B

3

13. C

23

33

43. A

4

14. B

24

34

44. C

5

15. E

25

35. C

45. C

6. D

16. E

26

36. B

46. D

7. E

17. A

27

37. C

47.

8. A

18. C

28. D

38. B

48

9. D

19.

29

39. D

49. E

10. B

20. E

30. B

40. B

50. A