A Researcher Interested in Studying Development and Function of the Allantois

question 168

Multiple Choice

A researcher interested in studying development and function of the allantois in a vertebrate wants to select a species with a relatively large allantois.A good recommendation would be to

• A) study humans.
• B) avoid chicks because they lack this particular extraembryonic membrane.
• C) find a species of placental mammal whose placenta is not very effective at clearing nitrogenous wastes.
• D) select a species in which ectoderm makes a large contribution to the allantois.
• E) find a species of placental mammal whose placenta is particularly effective at clearing nitrogenous wastes.

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Definitions:

Fire Insurance Policy

A contract between an insurer and policyholder that provides financial protection against losses or damage due to fire.

Unoccupied

Referring to a place or dwelling that is not currently being lived in or used.

Vacant

Vacant refers to a space or position that is unoccupied or not filled, available for use or to be taken by someone.

Uninhabitable

A condition of a property that makes it unsuitable for people to live in due to risks to health and safety.