A Reasonable Hypothesis for the Evolution in Pines of a Delay

question 79

Multiple Choice

A reasonable hypothesis for the evolution in pines of a delay in complete development of the female gametophyte until after pollination is that:

• A)complete development of the female gametophyte requires fusion of gametes.
• B)many seeds fail to be successfully dispersed, and thus investing resources to complete the development of female gametophytes before pollination would be costly.
• C)in fact, development of the female gametophyte is continuous, without any pause.
• D)many ovules fail to be successfully pollinated, and thus investing resources to complete the development of female gametophytes before pollination would be costly.

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Definitions:

Variable Cost

Costs that change in proportion to the level of production or sales, such as materials and labor.

Capacity

The maximum amount of work that an organization, system, or machine can produce in a given period.

Multiproduct Break-Even

An analysis used to determine the point at which total revenue equals total costs for multiple products, indicating no profit or loss.

Weighted Contribution

A calculation that assigns different weights or importance to various items or activities based on their contribution to the total.