Dictyostelium Discoideum Straddles the Boundary Between Unicellular and Multicellular

question 79

Multiple Choice

Dictyostelium discoideum straddles the boundary between unicellular and multicellular.Its feeding phase consists of individual amoeba-like cells that move independently,feeding on bacteria.When the food runs out,cells begin to aggregate into a multicelled structure.The cells differentiate into a base,stalk,and spores;only the spores survive to colonize a new habitat.Dictyostelium discoideum is which of the following?

• A)an autotroph
• B)a heterotroph and autotroph
• C)a heterotroph
• D)a detritovore
• E)a heterotroph and detritovore

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Definitions:

Withdrawal of Love

A psychological or emotional condition where an individual withholds affection or emotional support as a form of punishment or manipulation.

Privilege Removal

A disciplinary or behavioral management technique involving taking away certain privileges as a consequence for unwanted behavior.

Restrictive

Imposing limits or controls on someone's actions or on the extent of something's use or operation.

Aggression

Behavior intended to harm or injure another being, either physically or psychologically.