What is phototropism and how does it occur?

What will be an ideal response?


Phototropism, or bending toward the light, is the plant movement that results from plant growth in the
direction of available light. This growth is not perceptible to the human eye. Phototropism is a
hormonal response within the cells of the plant. Cells on the topside of the stem elongate while those
on the underside remain the same. When this occurs, a curvature of the stem is produced so that the
newest growth is oriented toward the light source. When plants receive light from a single direction,
their pots should be physically turned about 25% every week or so in order to keep the plant visually
balanced.

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Health care facilities are often supplied by two or more distribution points; this is known as a(n) _____.

a. essential electrical system b. double-ended system c. spot network d. emergency branch

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What are the most commonly used cut flowers?

What will be an ideal response?

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The primary body color of the tinfoil barb is:

A) silver B) gold C) blue D) red

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At sea level, the air pressure applied to every square inch of Earth's surface is _____

a. 0 psia b. 14.7 psia c. 27.68 psia d. 14.7 psig

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