The Scala Naturae Is the

question 1

Multiple Choice

The scala naturae is the

• A) view that all of life can be arranged on a single scale from simple to complex.
• B) ontogeny of an individual.
• C) number of traits shared among species.
• D) effect of an organism's environment on its development.

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Definitions:

Contractile Vacuoles

Organelles found in certain unicellular organisms responsible for expelling excess water from the cell to maintain osmotic balance.

Flattened Vesicles

Flattened, membrane-bound sacs found within cells, often involved in the transport and processing of cellular materials.

Chromalveolates

A supergroup composed of diverse protists with few shared characters; most are photosynthetic, and heterotrophic chromalveolates, such as the water molds and ciliates, probably descended from autotrophic ancestors. Divided into two main groups; see alveolates and stramenopiles.

Euglenoids

A group of mostly freshwater unicellular excavates that move by means of an anterior flagellum and are usually photosynthetic.