Ecology Test Review
Define the following terms:
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Listsomebioticfactors: Oÿef o\rÿ&oi-ÿY¢N ÿ' PC_ÿ\ &-ÿOq (ÿ
What do bacteria most likely function as in a food web?
Energy used by producers inn food web is provided by "ÿ0,
Label the trophic levels with the following:
Producer, primary, secondary, tertiary, top consumer
Which level will have the most amount of energy?
Which level will have the least amount of energy?
Which level will have the most amount of biomass?
Which level will have the least amount of biomass?
How much energy is passed to each trophic level? [00l°
What happens to-the rest of the energy not passed on to the next trophic level?
What percentage of energy will the producers pass on to the secondary consumers?
Between which 2 levels is the greatest amount of energy transferred? ÿ and
Between which 2 levels is the least amount of energy transferred? ÿ and
Decide whether each ofÿhe following is an example of mutualism, parasitism, commensalism, or
Upon digging up a clover plant, a student observed an average of 8 nodules on the roots of each clover
plant. Nodules contain bacteria which have the ability to convert atmospheric nitrogen into nitrates and
release them into the soil. Plants utilize nitrates to manufacture proteins. The plant in return provides
energy to the bacteria.
What ecological relationship exists between the bacteria and the clover plant? ÿ. tJÿtM,)(Jÿ.l'&
Small green aphids were sucking the juices from clover stems. Further investigation found some aphids
being eaten by an army of ants.
What type of ecological relationship exists between the aphids and the clover? ÿ::)(:XfLÿ (ÿ £ ÿYk
What type of ecological relationship exists between the ants and the aphids? ÿ-40ÿ!ÿJC©'Yÿ
A squirrel has lice.
What ecological relationship exists between the lice and the squirrels?
A colony of Leaf Cutters bees was feeding on the nectar and pollinating flowers.
What ecological relationship exists between the flowers and the bees? IV\k:ÿ!Z-( ÿ YVk_
A bee keeper was setting out a hive of honey bees.
What ecological relationship exists between the bee keeper and the bees.ÿ
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Several butterflies and moths were flitting over the field. Some could be observed landing on flowers,
others were landing on leaf axils, and the students thought they were laying eggs.
What ecological relationship exists between the butterflies and the leaves? CG fY[ ÿ'YLÿ ÿ'L.ÿd'44& Yÿ"L
Nearby, a Red Fox was dozing in the sun, contented after his recent kill, a Jack Rabbit. Several Blue Burr
seeds were stuck in his coat.
What ecological relationship exists between the fox and the rabbit? ÿ ([ÿ ÿ ÿ Vÿ
What is the relationship between the seeds and the fox? Coco ÿ'fÿ VVLÿ lÿ,_ÿgÿ (" ÿ l/ÿ
As energy is passed up a food chain, chemical pollutants increase / ÿCircle answer.)