In Order to Germinate, Seeds of Many Temperate-Zone Species Require

question 40

Multiple Choice

In order to germinate, seeds of many temperate-zone species require a prolonged exposure to temperatures below some critical threshold. This prevents germination:

• A)during warm days in autumn.
• B)beneath a canopy of plants.
• C)during long days.
• D)in high-latitude populations, but not in low-latitude populations.

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Definitions:

Fixture

A device used to securely hold an object in place during manufacturing or testing processes.

Set-Up Point

In manufacturing, a specific point or position on a machine or work piece that serves as a reference for the start of a process or operation.

Point Of Origin

The fixed point from which coordinates are measured in a coordinate system, often represented as (0,0) in two dimensions.

Zero Point

A reference point from which measurements or coordinates are determined in various applications, including machining and mathematics.