Please Use the Following Information to Answer the Question(s)below

question 8

Multiple Choice

Please use the following information to answer the question(s) below.
In areas of permafrost,stands of black spruce are frequently observed in the landscape,whereas other tree species are noticeably absent.Often these stands are referred to as "drunken forests" because many of the black spruce are displaced from their normal vertical alignment.
-What might be the adaptive significance of these unusual forests growing the way they do in this marginal habitat?

• A)Needles are adapted to withstand cold Arctic temperatures.
• B)Branches are adapted to absorb more CO₂ with this displaced alignment.
• C)Taproot formation is impossible,so trees developed shallow root beds and easily tilt.
• D)Trees are tilted so that snow won't break them or tip them over.
• E)Trees tip so that they do not compete with each other for sunlight.

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Definitions:

Antibiotic Medium

A growth medium infused with antibiotics used in laboratory settings to select for or against microorganisms sensitive to the specific antibiotics.

Human DNA Fragments

Short sequences or pieces of human deoxyribonucleic acid (DNA) that result from breaking the molecule into smaller components.

Plasmids

Small, circular, double-stranded DNA molecules found in bacteria and some other organisms, capable of independent replication and often used in genetic engineering.

Polymerase Chain Reaction

A laboratory technique used to amplify DNA sequences, making millions of copies of a specific DNA segment.