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Bio 32-1
| Question | Answer |
|---|---|
| Animals | multicellular heterotrophic organisms that lack cell walls. |
| Which includes a backbone? | Vertebrates |
| Which does not include a backbone? | Invertebrates |
| In multicellular organization... | Each cell in an animal body depends on the presence and functioning of other cells. |
| In all but the simplest animal phyla, there is _________ among cells. | specialization |
| A _____ is a group of similar cells, held together by cell junctions | tissue |
| Cell junctions serve what purpose? | To perform a common function |
| ________ are composed of more than one type of tissue and are specialized for a certain function. | Organs |
| Heterotrophy | They obtain complex organic molecules from other sources, usually by ingestion. |
| The ability to move results from the interrelationship of muscle tissue and nervous tissue, or _____. | Neurons |
| Taxonomists have grouped animals into several phyla by comparing their: | fossils, body symmetry, patterns of embryo development, macromolecules, such as rRNA |
| ____ is a body arrangement in which parts that lie on opposite sides of an axis are identical. | Symmetry |
| Types of symmetry: | None, radial, bilateral |
| The _______ is the diploid cell that results from the fusion of gametes | Zygote |
| What happens in differentiation? | cells become specialized and therefore different from each other. |
| Chordate | refers to animals with a notochord |
| ________ is a hollow tube above the notochord. | Dorsal nerve chord |
| ________ are small outpockets of the anterior digestive tract. | Pharyngeal pouches |
| __________, a firm, flexible rod of tissue located in the dorsal part of the body. | Notochord |
| The_______consists of muscle tissue and lies behind the posterior opening of the digestive tract. | postanal tail |
| ______ are tissue layers in the embryos of all animals except sponges, which have no true tissues. | Germ layers |
| What is the concentration of sensory and brain structures in the anterior end of the animal? | Cephalization |
| ______ animals are multicellular, ______ are heterotrophic, and _____ lack cell walls | All, all, all |
| An animal's ability to move results from the interrelationship between | Nervous tissue and muscle tissue |
| Scientists infer that the first invertebrates evolved from | Colonial protists |
| Cephalization is associated with | Bilaterally symmetric animals |
| Dorsal refers to the ______ | Back |
| Anterior refers to the ____ | Front |
| Posterior refers to the ______ | Hind end |
| Ventral refers to the ____ | Abdomen |
| The body cavity is used for | Anchoring |
| Which animals do not have tissues? | Porifera (Sponge) |
| Sponges have _______ symmetry | Assymetrical |
| Pnidaria have ________ symmetry | Radial |
Created by:
maicey.m
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