Why Was the Evolution of the Extraembryonic Membranes Crucial for Colonization

question 39

Multiple Choice

Why was the evolution of the extraembryonic membranes crucial for colonization of land by the vertebrates? Extraembryonic membranes ________.

• A) provide an aqueous environment for embryo development
• B) provide nutrients that produce energy for development
• C) direct morphogenesis within the embryo
• D) give rise to crucial organ systems, like the heart and brain

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Definitions:

Subsequent Episodes

Later occurrences or episodes of a condition or illness that happen after the initial episode.

Prevalence

The proportion of a population found to have a particular condition at a specific time.

Mania

A state of abnormally elevated arousal, mood, or energy levels, often associated with bipolar disorder.

Monoamines

Neurotransmitters, including catecholamines (epinephrine, norepinephrine, and dopamine) and serotonin, that have been implicated in the mood disorders.