Which of These Organisms,sometimes Called Living Fossils,is Represented by Only

question 42

Multiple Choice

Which of these organisms,sometimes called living fossils,is represented by only one species?

• A) horsetails
• B) club mosses
• C) liverworts
• D) ginkgos
• E) cycads

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Definitions:

Generalized Anxiety Disorder

A mental health disorder characterized by excessive, uncontrollable worry about everyday things, disproportionate to the actual source of worry.

Social Anxiety Disorder

Social Anxiety Disorder is a mental health condition marked by intense fear of social interactions, causing considerable distress and impaired ability to function in at least some aspects of daily life.

Phobias

An intense, irrational fear of specific objects, activities, or situations that leads to avoidance behavior.

Obsessive-compulsive Disorder

A mental health disorder characterized by recurrent, unwanted thoughts (obsessions) and/or repetitive behaviors (compulsions).