Exam I - Life Cycles to Know:
 1 - Zygomycete - bread mold
 2 - Ascomycete
 3 - Basidiomycete - common mushroom
 4 - Selected structures - Oomycete, general rust - wheat stem rust
 5 - Red alga - Polysiphonia
 6 - Brown alga - Fucus




BIOLOGY 205                  GENERAL BOTANY                    SAMPLE EXAM I


Check the appropriate answers.  The number of incorrect answers will be
subtracted from the number of correct answers.  Only good guesses count.
1 point each.



1 - Which of the following statements does not apply to prokaryotic organisms?
    ____ organized nucleus
    ____ the most abundant organisms
    ____ do not contain endoplasmic reticulum
    ____ contain small mitochondria


2 - In the growth of bacterial cells:
    ____ aerobic species grow more rapidly in the presence of oxygen
    ____ the tetanus toxin is produced under an aerobic condition
    ____ low temperature (freezing) generally kills the cells
    ____ budding is the primary means of asexual reproduction
    ____ division is reduced in the presence of 80% ethyl alcohol
    ____ the cells do not rapidly reproduce under acid conditions
    ____ high salt concentration is required


3 - In the practical applications of bacterial systems:
    ____ Proprionic acid is produced in camembert cheese
    ____ lactobacillus coagulates milk proteins
    ____ heat is produced in compost formation
    ____ sugar is fermented to produce beer


4 - The basic structure of bacterial cells:
    ____ includes the coccus type which is rod-shaped
    ____ includes peptidolipids
    ____ includes peptidotglycans
    ____ contains cellulose
    ____ takes up stain color in gram positive organisms


5 - Bacterial reproduction which involves genetic recombination:
    ____ may involve flagellae
    ____ may involve pilli
    ____ involves conjugation
    ____ includes fission
    ____ may involve bacteriophages


6 - Autotrophic organisms
    ____ are usually parasites
    ____ may accumulate sulfur in cells
    ____ may fix nitrogen
    ____ may obtain energy from the oxidation of inorganic molecules
    ____ always are photosynthetic


7 - In nitrogen fixation
    ____ reduced nitrogen is formed
    ____ nitrate is formed
    ____ nitrogen gas is used
    ____ a nodule is required


8 - In the development of the crown gall disease:
    ____ involves tranaduction
    ____ the transformation process is illustrated
    ____ T-DNA is inserted into the host genome
    ____ bacterial cells synthesize opines


9 - In the cyanobacteria:
    ____ nitrogen is reduced in heterocysts
    ____ photosynthesis takes place in the heterocysts
    ____ store glycogen
    ____ contain Chlorophyll A


10 - In the oomycetes:
    ____ the 2N generation is dominant
    ____ form zoospores in asexual reproduction
    ____ include powdery mildew
    ____ were responsible for the Irish potato famine
    ____ produce chitin as a major component in the cell wall


11 - In the cellular slime molds:
    ____ ATP serves an aggregation signal
    ____ form 2N spores
    ____ form a pseudoplasmodium
    ____ the myxamebae are 2N
    ____ are oomycetes


12 - Bread mold:
    ____ is septate
    ____ produces rhizoids
    ____ is included in the kingdom Protista
    ____ form haploid spores


13 - Ascomycetes:
    ____ include truffels
    ____ are used in the production of swiss cheese
    ____ form a dikaryon in the life cycle


14 - In the diatoms:
    ____ pennate forms are radially symmetric
    ____ incorporate silicon dioxide into cell walls
    ____ mitosis produces four daughter cells
    ____ produce materials which are used as thickening agents
    ____ a use includes filtering materials


15 - In the dinoflagellates:
    ____ certain members are found as symbionts in zooxanthellae
    ____ store paramylum
    ____ cellulose plates form the cell wall
    ____ two flagellae are produced


16 - Ascomycetes:
    ____ include the ergot organism
    ____ a total of four conidiospores are produced in the ascus of
         some (such as yeast)
    ____ may produce a cleistothecium which is a closed ascocarp
    ____ are septate organisms
    ____ include the chestnut blight organism


17 - Yeasts:
    ____ are basidiomybetes
    ____ produce carbon dioxide in fermentation
    ____ are used in the production of vinegar
    ____ produce ascospores
    ____ reproduce by budding


18 - Basidiomycetes
    ____ karyogamy forms a haploid nucleus
    ____ the stalk of a spore is called a sterigma
    ____ forms eight Basidiospores
    ____ include morels
    ____ include common mushrooms


19 - Wheat Stem Rust
    ____ basidiospores infect wheat plants
    ____ aeciospores are produced on Barberry plants
    ____ is an autoecious rust
    ____ urediospores are dikaryotic    
    ____ teliospores are produced on wheat plants



20 - Brown Algae
    ____ form laminarin
    ____ produce starch as the primary storage polysaccharide
    ____ include Sargassum
    ____ the stipe and blade are haploid structures


21 - Lichens
    ____ usually are composed of an ascomycete and an alga
    ____ include leaf-like foliose forms
    ____ include Cladonia
    ____ reproduce by specialized fragments called soredia


22 - Gill Fungi
    ____ produce a pileus
    ____ are Basidiomycetes
    ____ include puffballs


23 - Red Algae
    ____ produce a specialized cell wall material called agar
    ____ are a source of nori
    ____ include Fucus
    ____ store floridean starch as a polysaccharide


24 - Volvox
    ____ illustrates the tetrasporine evolutionary tendency
    ____ is a colonial green alga
    ____ forms filaments
    ____ stores mainean starch
    ____ cells are flagellated