Why Have Biologists Hypothesized That the First Land Plants Had

question 6

Multiple Choice

Why have biologists hypothesized that the first land plants had a low,sprawling growth habit?

• A)At the time of the first land plants,the atmosphere had oxygen mainly close to the ground.
• B)Land animals of that period consumed erect plants.
• C)The ancestors of land plants,green algae,lack the structural support to stand erect in air.
• D)Land animals of that period were small,so they needed short plants to eat.
• E)Only fossilized plants exhibit this habit.

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Definitions:

Economies of Scale

The cost advantages that enterprises obtain due to their scale of operations, with cost per unit of output generally decreasing with increasing scale.

Economies of Scale

The price benefits that firms enjoy from the magnitude of their operations, where the cost of each output unit generally lessens as the scale of operations increases.

Unit Costs

The financial outlay for a company to manufacture, warehouse, and dispose of one unit of a specific item or service.

Output

Represents the total amount of goods or services produced by a firm or economy in a specific period.