Net Primary Productivity on Land

question 7

Multiple Choice

Net primary productivity on land

• A) tends to increase from the equator toward the poles.
• B) tends to decrease from the equator toward the poles.
• C) is greatest in deserts due to intense sunlight.
• D) is very low in tropical areas due to excessive rainfall.

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Definitions:

Color-Blind

A visual impairment where an individual has difficulty distinguishing between certain colors.

Cones

Photoreceptor cells in the retina of the eye responsible for color vision and visual acuity under bright light conditions.

Visual Pigment

Molecules in photoreceptor cells of the eyes that undergo chemical changes upon absorbing light, initiating the process of vision.

Rods

Specialized photoreceptor cells in the retina that are responsible for vision at low light levels.