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Unit 1

Test Description: Ecology

Instructions: Answer all questions to get your test result.

1) Living things do all of the following except

Amake adjustments to nonliving factors around them. Bpass an identical genetic code to their offspring for many generations. Crespond to other organisms. Dmaintain a steady internal environment.

2) What is the basis of the metric measurement system?

AIt is based on European measurement standards. BIt is based on the wavelength of krypton-86 radiation. CIts measures are based on divisions that are powers of ten. DIt is the only scientific measurement system.

3) Which of the following correctly sequences the steps of the scientific method?

Aobserve, question, make a testable explanation, experiment, collect and analyze data, state findings Bform a hypothesis, observe, investigate a testable question, collect and analyze data, state results Cdesign and conduct an investigation based on a testable question, form a hypothesis, collect data, state findings Dquestion, observe, explain, design and conduct experiment, collect and analyze data, report findings

4) Cougars are predators that often eat weakened or diseased animals. This is a description of the ____ of cougars.

ANiche BHabitat CNone of these DCommunity

5) What is вЂњsoil typeвЂќ to an earthworm?

AAbiotic factor Bniche Ccommunity Dbiotic factor

6) Which of the following would be the easiest way to diagram predatory and parasitic relationships between several species?

AFood Web BFood chain CBiomass Pyramid DPyramid of numbers

7) Which process describes nitrogen fixation?

Abacteria take nitrogen from the air and convert it to a form usable by plants Borganisms die and are decomposed into ammonia in the soil Canimals eat plants containing nitrogen and return it to the soil through urination Dplants take nitrogen from the air and store it in their roots

8) What single feature is primarily responsible for the variation of climate in different parts of the world?

Aamount of precipitation Bangle of incoming sunlight Cintensity of wind Dlength of daylight

9) Compare primary and secondary succession. What is the distinction between them?

APrimary succession is the establishment of a community in an area with no soil, while secondary succession is the establishme BPrimary succession is the sequence of species that become established early in a newly colonized area, and secondary successi CPrimary succession is the establishment of a new community in an existing ecosystem that was disturbed, while secondary succe DPrimary succession is the sequence of plants that colonize a new area, while secondary succession is the sequence of animals

10) Which characteristic is typical of a k-strategist?

Agenerally a small organism Bproduces many offspring Cshort life span Dlengthy parental care

*select an answer for all questions

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