Question

1.

Whichof the following factors are all biotic?

A.	predators, temperature, competitors, mates
B.	predators, parasites, competitors, mates
C.	light,parasites, competitors, mates
D.	predators, parasites, competitors, nutrient
E.	water,light, nutrients, temperature

2.

Whichof the following groups would be the subject for populationecology?

A.

Allthe organisms in a small pond.

B.

TheFrogs and Toads that live in the lakes at City Park.

C.

Theorganisms that live in a sample of pond water maintained in the labfor 2 months.

D.

TheTaro plants in the University Lake over the course of a year.

E.

Microscopic Hydra maintained in aquacultures in the lab underdifferent conditions.

F.

Bothanswers C and E

G.

Bothanswers D and E

H.

All ofthe above

.

Themanufacturers of Tomato-Maker Fertilizer� claim that theirfertilizer will increase the productivity of tomatoes (fruits) ifused as directed. To test this, a researcher applied the fertilizerto tomato plants over the course of 10 weeks. Productivity wasdetermined by the mass (grams) of the fruits produced. Identify thedependent variable in this experiment. Select one:

A.	Massof fruit produced
B.	Tomato-Maker Fertilizer�
C.	Water
D.	Sunlight

2.	Howmany variables should you be manipulating during an experiment?Enter your answer as a number or a word.

3.

Consider the following example: A young forester wanted to find out why bald cypress trees arenormally found only in swamps. A major feature of a swamp is thepresence of standing water throughout much of the year. To testwhether living in standing water helps cypress trees grow rapidly,he built a shallow pond in the middle of a very large pasture. Thenhe planted 100 cypress trees in the pond (standing water) and 100cypress trees in an adjacent pasture (semi-dry upland soil). Bothplots were of equal size (0.2 hectare). 3a) Write the Null Hypothesis for this experiment

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4.	3b)Write the Alternative Hypothesis for this experiment
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5.	4a)what is the Independent variable
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6.	4b)what is the Dependent variable
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7.	5) Isthere a Control? If so, what is it?
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8.	6) Arethere Replicates? If so, how many?
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