Many Single-Celled Eukaryotic Organisms Have Evolved Complex Life Cycles That

question 101

Multiple Choice

Many single-celled eukaryotic organisms have evolved complex life cycles that include sexual reproduction. This means that:

• A)at some point, two cells must fuse to become diploid.
• B)diploid cells must undergo mitotic cell division in order to reproduce.
• C)haploid cells must undergo meiotic divisions to form gametes.
• D)complex mating behaviors likely evolved at the same time as sexual reproduction.

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Definitions:

Signaling Molecules

Chemicals that are involved in transmitting information between cells, allowing for processes such as growth, immune response, and neurotransmission.

Hormones

Chemical substances produced in the body that regulate and control the activity of certain cells or organs.

Foul-Smelling

Emitting an unpleasant or offensive odor.

Pollinated

The process by which pollen is transferred from the male parts of a plant to the female parts of a plant, enabling fertilization and the production of seeds.