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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

Amaintain a steady internal environment. Brespond to other organisms. Cpass an identical genetic code to their offspring for many generations. Dmake adjustments to nonliving factors around them.

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

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

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 Bquestion, observe, explain, design and conduct experiment, collect and analyze data, report findings Cform a hypothesis, observe, investigate a testable question, collect and analyze data, state results Ddesign and conduct an investigation based on a testable question, form a hypothesis, collect data, state findings

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

ANiche BNone of these CHabitat DCommunity

5) What is вЂњsoil typeвЂќ to an earthworm?

Abiotic factor Bcommunity CAbiotic factor Dniche

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

AFood chain BBiomass Pyramid CFood Web DPyramid of numbers

7) Which process describes nitrogen fixation?

Abacteria take nitrogen from the air and convert it to a form usable by plants Banimals eat plants containing nitrogen and return it to the soil through urination Corganisms die and are decomposed into ammonia in the soil 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?

Alength of daylight Bangle of incoming sunlight Camount of precipitation Dintensity of wind

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 sequence of plants that colonize a new area, while secondary succession is the sequence of animals DPrimary succession is the establishment of a new community in an existing ecosystem that was disturbed, while secondary succe

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

Aproduces many offspring Bshort life span Clengthy parental care Dgenerally a small organism

*select an answer for all questions

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