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Dandelions are small flowers that are considered weeds and can be found througou

ID: 53019 • Letter: D

Question

Dandelions are small flowers that are considered weeds and can be found througout the continental US. Based on this iformation, which of the following statements is the most accurate?

Dandelions have a wide tolerance for habitat characteristics

Dandelions can only tolerate a narrow range of habitat characteristics

Dandelions must be omnivores

Dandelions are not native to the US

The soil in and around areas called fens is quite basic (has a pH of 8 or higher). Therefore you would predict

fens are areas of high plant diversity

fens are areas of low plant diversity

many of the plant species found in fens are endemic (do not grow well elsewhere)

fens have a low diversity of plants that are mostly endemic

A researcher is studying the impact of soil acidity on the plant and animal community in a fen. She is also examining how the soild acidity affects the nitrogen contents of the plants and the water in the soil. She is therefore a(n)

ecosystem ecologist

population ecologist

behavioral ecologist

botanist

How is energy typically stored in the food chain?

in carbon-carbon bonds

in hydrogen-hydrogen bonds

in carbon-hydrogen bonds

in oxygen-oxygen bonds

Dandelions have a wide tolerance for habitat characteristics

Dandelions can only tolerate a narrow range of habitat characteristics

Dandelions must be omnivores

Dandelions are not native to the US

Explanation / Answer

Explanation: Fens frequently have a high diversity of plant species including some carnivorous plants which are endemic such as Pinguicula. These plants rarely present worldwide.