The Key Idea Behind the Trichromatic Theory of Color Vision

question 6

Multiple Choice

The key idea behind the trichromatic theory of color vision is that:

• A)the retina contains three kinds of color receptors
• B)increased activation of one type of color cell will decrease activation in another
• C)ganglion cells encode most aspects of color
• D)each hemisphere of the brain processes color differently

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Definitions:

Pericycle

A cylinder of parenchyma or sclerenchyma cells just inside the endodermis of roots, which can give rise to lateral roots, and in some cases, contribute to secondary growth.

Branch Roots

Secondary or lateral roots that originate from the primary root, increasing the root system's overall surface area for water and nutrient absorption.

Root Hairs

Thin, hair-like extensions of root epidermal cells that increase surface area for water and nutrient absorption from the soil.

Xylem

is a type of tissue in plants that transports water and dissolved nutrients from the roots to the rest of the plant.