A Basic Problem with the Trichromatic Theory Is That

question 559

Multiple Choice

A basic problem with the trichromatic theory is that

• A)color cannot be analyzed into "either-or" messages.
• B)only two types of light-sensitive visual pigments have been found in the retina.
• C)four colors seem to be primary, that is, you cannot get them by mixing other colors.
• D)it only explains events recorded in the optic pathways after information leaves the eyes.

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Definitions:

Integuments

Layers of protective tissues surrounding the ovules of plants, which develop into the seed coat upon fertilization.

Accessory Fruit

A fruit consisting primarily of tissue other than ovary tissue (e.g., apple, pear). Compare with aggregate, simple, and multiple fruits.

Coleoptile

A protective sheath covering the emerging shoot in monocotyledons, such as grasses and cereals.

Embryonic Plant

A stage in plant development where the embryo forms within the seed, eventually growing into a new plant.