Topic Test Answers

Rainforest deforestation is contributing to _______.a.a decline in global biodiversityb.the reduction of greenhouse gasesc.increased soil moistured.increased drug discoveries

Trees maintain the balance between gases in the air, removing carbon dioxide from the air and releasing oxygen.

Which of the following statements about prescribed burns is true?a.Prescribed burns will always have detrimental effects on ecosystems, but should be used to protect homes.b.Prescribed burns are necessary for preventing natural wildfires.c.Prescribed burns can help maintain healthy ecosystems.d.None of the above

Foresters work for private companies as well as government agencies.

The principal characteristic that differentiates temperate and tropical rainforests is __________.a.latitudeb.oxygen turn overc.the continent they are ond.longitude

Which of the following is a way that trees have been negatively impacted by human use?a.deforestationb.pollutionc.reductiond.all of the above

Which of the following forest management practices keeps the forest in a state of mid to late succession?a.clearcuttingb.uneven-agedc.even-agedd.seed-tree cutting

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Which of the following organisms is the most harmful to the tree it grows on?a.strangler figb.orchidc.Spanish mossd.none of the above

Which of the following is not a reason that humans genetically engineer trees?a.insect resistanceb.pharmaceutical productionc.faster growthd.none of the above

Which of the following organisms is the most harmful to the tree it grows on?a.strangler figb.orchidc.Spanish mossd.none of the above

All ecosystems are affected by wildfires equally.

Rainforests are not generally considered a source of _______.a.foodsb.spicesc.medicinesd.none of the above

Where is the carbon taken in by plants during photosynthesis stored?a.the groundb.plant structuresc.the aird.all of the above

How do trees act as carbon sinks?a.They take in carbon during the process of photosynthesis.b.Carbon is stored in their tissue.c.They remove carbon dioxide from the atmosphere.d.All of the above

Which of the following is not a benefit of wildfires to ecosystems?a.habitat lossb.underbrush reductionc.new growthd.plant regeneration

Mammals use trees for both food and shelter.

Which of the following about carbon sinks is not true?a.They emit more carbon than they take in.b.They take in more carbon they emit.c.They store carbon from the atmosphere.d.They include oceans and forests.

Which of the following is not a food produced in rainforests?a.coffeeb.cocoac.avocadosd.mustard seeds

Human impact on trees has been completely negative.