The Cycles of Matter Answers
The Great Burdock plant’s seeds have spines on them that attach to the fur of animals that brush against it. The seed then travels with the animal until it eventually falls off, which spreads the plant’s seeds farther than the plant could have done. What type of symbiotic relationship is this?a.Mutualismb.Commensalismc.Parasitismd.Competition
How can an increase in biodiversity lead to an increase in ecosystem stability?a.A more biodiverse ecosystem is not subject to change.b.A more biodiverse ecosystem has a higher chance of adapting to species changes.c.A more biodiverse ecosystem has fewer species types to balance.d.A more biodiverse ecosystem is subject to fewer natural disasters.
Organisms that have a physical trait that makes it easier for them to access food supplies are unlikely to pass on that trait to their offspring.
What discovery led Darwin to develop his theories on adaptation?a.The Galapagos islands contain a range of habitats.b.The Galapagos islands originate from volcanoes.c.The birds Darwin found in the Galapagos were different types of finches, not separate types of birds.d.Many of the organisms in the Galapagos lived in hostile environments.
Scientists recently identified the function of three proteins in plants. The proteins regulate the production of fatty acids, which are found in fats and oils. Which question will most likely be asked about the results, leading to more investigations?
Which of the following is not a part of Darwin’s theory of evolution?a.Changes in organisms occur immediately.b.Organisms change over time.c.Species evolution occurs through natural selection.d.Organisms developed from common ancestors.
Consider the following food chain:Garden plants are eaten by snails, which are eaten by birds, which are eaten by the household cat.
Deer run in zigzag patterns when being chased by predators. What type of adaptation is this?a.Behavioralb.Physiologicalc.Structurald.Ecological
After observing a moth that is camouflaged against dark-colored bark, a scientist asks a question. The scientist discovers that the question has already been asked and answered by several investigations. What should the scientist do?
How does conservation affect biodiversity?
What led Darwin to believe that organisms originate from a common ancestor?
How could the loss of biodiversity affect humans?
Use the concept of natural selection to explain why organisms typically adapt over time.
Which description indicates that a question is nonscientific?
A conservation biologist has determined the status of the ecosystems in a protected area, as shown in the table below. Based on the table, which part of the pie chart represents secondary succession?Status of ecosystemsPercentage of protected areaPrimary succession10Secondary succession30Barren land5Established community55
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