The Ideal Christmas Tree Has a Conical Shape

question 61

Multiple Choice

The ideal Christmas tree has a conical shape. The top of the tree is pointed and narrow, with clear apical dominance, and the bottom of the tree is wide, with extensive lateral branching. Certain evergreen species are suitable for use as Christmas trees because they have this shape normally and thus require little pruning or training as they grow. For example, spruces and firs are often grown as Christmas trees, whereas yews and longleaf pines are not. Based on this information, spruces and firs are likely to have

• A) low levels of auxins near the top and high levels of cytokinins at the bottom of the tree.
• B) high levels of auxins near the top and low levels of cytokinins at the bottom of the tree.
• C) high levels of auxins near the top and high levels of cytokinins at the bottom of the tree.
• D) low levels of auxins near the top and low levels of cytokinins at the bottom of the tree.

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Definitions:

National Quotas

Limits set by governments on the number of immigrants from specific countries allowed to enter the country over a set timeframe, historically based on ethnic or national origin criteria.

U.S. Racial Order

The historical and systemic arrangement of racial and ethnic groups in the United States, often associated with hierarchy and social stratification.

Symbolic Categories

Classifications made based on symbols or ideas that represent specific attributes or qualities, often used in the construction of social identities.

Mutually Overlapping

Describes conditions or attributes that coincide with or cover part of the same areas, ideas, or characteristics in a shared or common manner.