Bio 122 Exam 3 Questions With Correct Answers

Bio 122 Exam 3 Questions With Correct
Answers

Animal Characteristics - CORRECT ANSWER✔✔-1) multicellular,
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heterotrophic eukaryotes |




2) cells lack cell walls
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3) new tissue: nervous & muscular
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4) sexual reproduction
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How animal cells hold together - CORRECT ANSWER✔✔-structural
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protein, mainly collagen
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How do animals feed? - CORRECT ANSWER✔✔-ingestion
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1st stage of early embryonic development - CORRECT ANSWER✔✔-
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zygote


2nd stage of early embryonic development - CORRECT ANSWER✔✔-
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undergoes cleavage to the 8-cell stage
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,3rd stage of early embryonic development - CORRECT ANSWER✔✔-
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undergoes cleavage and forms a blastula
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4th stage of early embryonic development - CORRECT ANSWER✔✔-
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gastrulation


5th stage of early embryonic development - CORRECT ANSWER✔✔-
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forms a gastrula | |




Parts of a gastrula - CORRECT ANSWER✔✔-blastopore, blastocoel,
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endoderm, ectoderm, and archenteron | | |




Kingdom Animalia is? - CORRECT ANSWER✔✔-monophyletic
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Earliest common ancestor in Kingdom Animalia - CORRECT
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ANSWER✔✔-colonial flagellated protist during Precambrian Era, which | | | | | | |



is related to a chonaoflagellates
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Modern form of chonaoflagellates - CORRECT ANSWER✔✔-stalk with 5
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or so individual chonaoflagellates stuck together
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Ancient form of chonaoflagellates - CORRECT ANSWER✔✔-ball of
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chonaoflagellates with a hollow center | | | |

, ancient chonaoflagellates evolved into? - CORRECT ANSWER✔✔-simple
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animal with specialized cells
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specialized cells - CORRECT ANSWER✔✔-either reproductive cells or
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somatic cells (all other cells)
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Tradition phylogenetic tree of animals - CORRECT ANSWER✔✔-based
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on body plan and embryonic development
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grade - CORRECT ANSWER✔✔-a branch of the phylogenetic tree
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1st Deep branch point - CORRECT ANSWER✔✔-Parazoa-Eumetazoa
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dichitomy


parazoans - CORRECT ANSWER✔✔-lack true tissue, Phylum Porifera-
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sponges


eumetazoans - CORRECT ANSWER✔✔-have true tissue | | | | |




2nd Deep branch point - CORRECT ANSWER✔✔-Radiata-Bilateria
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dichotomy