Migration Is Usually a Burden in Terms of Costs and Loss

question 66

Multiple Choice

Migration is usually a burden in terms of costs and loss of social networks, so migrants are usually

• A) older.
• B) less educated.
• C) better off economically.
• D) less ambitious than others.

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Definitions:

Gas Filled Vacuoles

Structures within some cells that contain gas, which can provide buoyancy or maintain cell shape.

Pili

Hair-like structures on the surface of many bacteria that are involved in attachment to surfaces and in the transfer of genetic material.

Protist Structures

The varied and complex cellular organizations found in protists, ranging from single-celled to multicellular forms.

Eyespot

A pigmented organelle found in some algae and protozoa, allowing the organism to sense light direction.