Botany LS1203 - Plant Biology - Spring 2011
Terms and sample questions for Exam 3.
Each set of notes has a review list at the end of it. Try writing answers to all of the questions given in those lists. In addition to the topics on the list, you should also know important terms. Use the following list to supplement the other lists. The following includes most (hopefully all) of the terms that go with the material covered for your last exam. For many of the terms, it’s not just a matter of being able to define them. You need to be able to describe their role in a process or structure and distinguish between similar terms.
Exam 3 has 120 points. Exams 1 and 2 were each 100 points.
symbiosis mycorrhizae eukaryotic clone |
gamete pollination gamete seed
dormancy seed coat (testa) |
Kingdom Plant Vascular plants Bryophytes Algae Fungi Protista Mycota autotrophic photosynthetic parasite saprobe red algae green algae charophytes brown algae dinoflagellates diatoms photosynthetic pigments chlorophyll a accessory pigments chlorophyll b chlorophyll c phycobilins carotenoids perdinin fucoxanthin Floridean starch starch amylopectin laminarin chrysolaminarin cellulose |
hyphae soil pioneer community |
population bryophytes sporic life cycle |
In symbiotic nitrogen fixation, the fixation reaction is performed by
A. legumes B. mycorrhizae C.
Rhizobium bacteria
Nitrifying bacteria that convert ammonia to nitrate are examples of
A. heterotrophs B. chemosynthetic autotrophs
C. photosynthetic autotrophs
A plant that can dry out, enter a dormant stage, and revive when it is
rehydrated is
A. allelopathic B. poikilohydric
C. impossible
In a plant succession, the plants that immediately follow the pioneer community
are the
A. secondary succession B. seral stage
C. climax stage
The biome with the greatest species diversity is the
A. temperate deciduous forest B.
tundra C. desert
D. tropical rain forest E.
mountain forest complex
Nitrogen cycle: ammonification, nitrification, nitrogen fixation
(symbiotic and free-living), denitrification, N assimilation by plants
What roles do bacteria play in the different steps of the nitrogen cycle? In
particular, address their roles in nitrogen fixation, ammonification,
nitrification, and denitrification
Some seeds are dormant until stratification takes place. What is stratification? Why is it an important dormancy mechanism?
Be able to recognize the parts of a flower in a drawing.Be able to match specific flower structures/features with pollinators.
Know strategies that promote out-crossing.
Give one example of each of the following types of fruit:
berry =
drupe =
pome =
legume =
Be able to recognize the parts of a seed.
How is a seed important to plants?
Know the trophic levels in ecosystems and the types of organisms found at each level: decomposers, consumers, producers.
What is the difference between a primary plant succession and a secondary plant succession?
In what types of habitats do you find cryptobiotic soil crusts? What are the main types of organisms found in cryptobiotic soil crusts? Name three specific advantages that the crust organisms provide to their ecosystem. How do the organisms provide each of the advantages you gave?
Be able to locate biomes on a map of North America.
Videos: The Birds and the Bees, Branching Out, Plant Politics
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10 April 2011