A New Plant Species May Arise in a Single Generation

question 20

Multiple Choice

A new plant species may arise in a single generation by

• A) errors in meiosis leading to polyploidy.
• B) a sudden geological disruption causing separation of two populations.
• C) mutations in genes for flower color.
• D) changes in the pollinator species.

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Definitions:

Thermoreceptor

A sensory receptor that is sensitive to changes in temperature, found in the skin and hypothalamus.

Lamellated Corpuscle

A type of sensory receptor found in the skin and mucous membranes that detects pressure and vibration.

20/100 Vision

A measure of visual acuity that indicates a person sees at 20 feet what a person with normal vision can see at 100 feet.

Feet

The lower extremity of the leg below the ankle, on which a person stands or walks.