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Chapter 28 Unit

QuestionAnswer
The common ancestor of animals was probably a UNICELLULAR PROTIST with a flagellum. True
The embryos of humans DO show blastula formation. True
The development of a TRUE COELOM within the mesoderm aided the evolution of complex organs. True
The exchange of oxygen and carbon dioxide gas during respiration can only occur on a WET SURFACE such as that found in lungs. True
Segmentation DOES NOT LIMIT evolutionary flexibility. True
Scientist studying the evolutionary relationships of living animals might compare the animals All of the above.
An obvious characteristic of animals that distinguishes them from the members of other kingdoms is that animals. Are capable of more complex and rapid movements than members of the other kingdoms.
In segmented worms a segment? All the above.
A true coelom? Develops completely with the mesoderm.
All animals except sponges exhibit? Blastula formations, tissues, and symmetry.
Specialized areas for food storage and chemical digestion are found in an? One way digestion system.
Parthenogenesis is a method of? Asexual reproduction.
In an open circulatory system the route of the blood is the? Heart, blood vessels, body cavity, tissues, open spaces, and heart.
A true coelom? Protects internal organs from the movement of surrounding muscles.
An animal whose gut has only one opening has a? Gastrovascular cavity.
An animal in which the space between the body wall and gut is completely filled with tissues and organs is called an? Acoelomate.
All animals except sponges and single celled organisms digest their food? Extracellularly.
Sponges digest their food? Intracellularly.
Animals that have their body parts arranged around a central point are? Radial symmetrical.
The cells of all animals are organized into structural and functional units called tissues except for the cells of? Sponges.
Created by: ava-barnhill
 

 



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