Biology 332
Spring 1992

Exam III

Name_______________________

Follow all oral directions. Be sure to label all diagrams!

1. Auxins of plants correspond to what substance present in animals?

A. cytochromes
B. vitamins
C. buffers
D. enzymes
E. hormones
2. An herbaceous plant that dies back to the ground each winter but grows again from underground parts is best described as a(n)
A. annual
B. winter annual
C. deciduous annual
D. biennial
E. perennial
3. The colored structures associated with flowers of dogwood and poinsettia are
A. sepals
B. petals
C. perianths
D. bracts
E. hypanthia
4. The growth of pollen tubes to ovules illustrates
A. thigmotropism
B. chemotropism
C. hydrotropism
D. geotropism
E. phototropism
5. The practice of subjecting seeds to low temperatures for a period of time in order to break dormancy is called
A. thermolysis
B. winterizing
C.acclimatization
D. vernalization
E. desensitization
6. Which of the following cells performs a function though dead?
A. companion cell
B. tracheid
C. cambium
D. sieve tube
E. parenchyma of cortex
7. To which division do ferns belong?
A. Chlorophyta
B. Phaeophyta
C. Eumycophyta
D. Bryophyta
E. Pterophyta
8. Of the following, which is NOT of the same sex as the others?
A. archegonium
B. oogonium
C. embryo sac
D. ascogonium
E. antheridium
9. Because of its unusual adaptation, Venus' flytrap is best described as
A. herbivorous
B. carnivorous
C. insectivorous
D. omnivorous
E. parasitic
10. Gibberellins affect plants by
A. stimulating growth
B. retarding growth
C. causing leaf fall
D. ripening fruits
E. setting fruits without seed formation
11. Lawn grasses ordinarily suffer little damage when cut because
A. there are no apical meristems
B. grass leaves quickly regenerate lost parts
C. shorter plants can transport water and minerals better
D. cutting increases rate of growth
E. leaves grow from their bases
12. Sex cells in ferns are produced by the
A. frond
B. prothallium
C. rhizome
D. embryo sac
E. pollen
13. If organisms are classified in kingdom Monera, they
A. are uninucleate
B. lack definite nuclei
C. all are unicellular
D. have coenocytic bodies
E. all have sexual reproduction
14. Distinction between a short-day and a long-day plant is based on
A. time of flowering
B. season of planting
C. season of harvesting
D. rate of growth
E. size of plants
15. The pollen grain is related to the embryo sac as the
A. sperm is to the egg
B. sperm is to the microgametophyte
C. egg is to the megagametophyte
D. microgametophyte is to the megagametophyte
E. spore is to the gamete
The next six questions (16-21) consist of a group of lettered molecules that are important in the control of plant functions and numbered descriptions or examples of such molecules. For each numbered description or example select the lettered molecule that matches it best. Any one of the lettered molecules may be used one or more times or not at all.
A. auxin
B. cytokinin
C. gibberellin
D. ethylene
E. phytochrome

___16. is capable of bringing to full size, plants that are genetic dwarfs

___17. is related to control of photoperiodism

___18. initiates fruit ripening

___19. induces mitosis

___20. is linked to phototropism

___21. is the class of compounds that includes indoleacetic acid

22. Which of the following showed the ecological importance of earthworms and the importance of the coleoptile of phototropism?

A. Chargaff
B. Darwin
C. Lorenz
D. Morgan
E. Oparin
23. Angiosperms differ from gymnosperms in having
A. fruits
B. cotyledons
C. megagametophytes
D. broad leaves
E. tracheids in xylem
24. In the space below, diagram the stages of development from zygote to dormant dicot embryo. In the last diagram, include everything that could be called part of a seed.


25. Using both diagrams and text, trace the evolution of the female gametophyte from mosses to angiosperms. Be sure that your drawings show and your text describes the major changes in the plant body including the gametangia. You should use each of the example life cycles from this course as convenient steps in this evolution.
MossFern
 
 
 
 
 
 
 
 
 
 
SelaginellaPine
 
 
 
 
 
 
 
 
 
 
AngiospermSummary (the main events in order):
 
 
 
 
 
 
 
 
 
 

26. Using both diagrams and text, trace the evolution of the male gametophyte from mosses to angiosperms. Be sure that your drawings show and your text describes the major changes in the plant body including the gametangia and gametes. You should use each of the example life cycles from this course as convenient steps in this evolution.
MossFern
 
 
 
 
 
 
 
 
 
 
SelaginellaPine
 
 
 
 
 
 
 
 
 
 
AngiospermSummary (the main events in order):
 
 
 
 
 
 
 
 
 
 

27. Using both diagrams and text, trace the evolution of the sporophyte from mosses to angiosperms. Be sure that your drawings show and your text describes the major changes in the plant body including the sporangia and spores. You should use each of the example life cycles from this course as convenient steps in this evolution.
MossFern
 
 
 
 
 
 
 
 
 
 
SelaginellaPine
 
 
 
 
 
 
 
 
 
 
AngiospermSummary (the main events in order):
 
 
 
 
 
 
 
 
 
 

28. Compare and contrast a primitive flower with an advanced one. Use one row of the following chart to list the two character states of each floral trait.
PrimitiveAdvanced

 
 

 
 

 
 

 
 

 
 

 
 

 
 

 
 

 
 

 
 

29. In the space below, select one of the major plant groups and diagram its life cycle. There is a bonus for those who correctly diagram a heterosporous example. You do not need to show intermediate steps, but each plant body, its "angium" and its unicellular product leading to the next generation are required. For arrows, you need to name at least one process to get to the next step.

 

 


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