After Seeds Were Planted, Some of the Seedlings Did Not

question 13

Multiple Choice

After seeds were planted, some of the seedlings did not emerge from the soil. Is it possible they did not grow because some of the seeds were planted upside down?

• A) Yes; if the seed was oriented so that the embryonic shoot pointed down, it would grow in that direction because sunlight doesn't reach it.
• B) Yes; after seeds are planted, water and settling of the soil may cause them to shift in their orientation.
• C) No; gibberellins and abscisic acid, in balanced concentrations, cause shoots to grow away from gravity.
• D) No; sunlight penetrates soil to the depth of seeds and shoots grow toward the sunlight.
• E) No; auxins in the shoots cause curvature away from gravity.

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Definitions:

Basalt

A dark, fine-grained volcanic rock that forms from the rapid cooling of basaltic lava, composing much of the ocean floor and volcanic islands.

Problem Solving

The process of identifying a problem, developing potential solutions, and implementing a course of action to resolve the problem.

Superordinate Goals

Goals that are important enough to require the cooperation of two or more individuals or groups to achieve.

Compromise

An agreement or a settlement of a dispute reached by each side making concessions, often regarded as an effective way to resolve conflicts.