100% tevredenheidsgarantie Direct beschikbaar na betaling Zowel online als in PDF Je zit nergens aan vast
Eerder door jou gezocht
BIOLOGY 225 MIDTERM 1 FORM AND FUNCTION OF ORGANISMS IN ANIMALS CONCORDIA UNIVERSITY 2023 COMING SEMESTER EXAM STUDY GUIDE WITH PRACTICE QUESTIONS AND ANSWERS FULL TEST BANK€12,76
In winkelwagen
BIOLOGY 225 MIDTERM 1 FORM AND FUNCTION OF ORGANISMS IN ANIMALS CONCORDIA UNIVERSITY 2023 COMING SEMESTER EXAM STUDY GUIDE WITH PRACTICE QUESTIONS AND ANSWERS FULL TEST BANK
51 keer bekeken 1 keer verkocht
Vak
BIOL 225
Instelling
Concordia University (
)
Textbook Readings Chapter _ 32
Animal Diversity
Animals are multicellular, heterotrophic eukaryotes with tissues that develop from embryonic layers
Animals are a diverse monophyletic group with 34 major animal phyla
About 1.3 million species of animals living
Three characteristics de�...
biology 225 midterm 1 form and function of organisms in animals concordia university 2023 coming semester exam study guide with practice questions and answers full test bank
Geschreven voor
Concordia University (
)
Onbekend
BIOL 225
Alle documenten voor dit vak (1)
Verkoper
Volgen
smartzone
Ontvangen beoordelingen
Voorbeeld van de inhoud
lOMoAR cPSD| 6353920
BIOLOGY 225 MIDTERM
1 FORM AND FUNCTION
OF ORGANISMS IN
ANIMALS CONCORDIA
UNIVERSITY 2023
COMING SEMESTER
EXAM STUDY GUIDE
WITH PRACTICE
QUESTIONS AND
ANSWERS FULL TEST
BANK
,
, lOMoAR cPSD| 6353920
Textbook Readings
Chapter _ 32
Animal Diversity
❖ Animals are multicellular, heterotrophic eukaryotes with tissues that develop from
embryonic layers
❖ Animals are a diverse monophyletic group with 34 major animal phyla
❖ About 1.3 million species of animals living
❖ Three characteristics define the entire group
1. Mode of nutrition
2. Cell structure and specialization
3. Reproduction and development
❖ Nutritional Monde
❖ Animals are heterotrophs
❖ They cannot construct all their own organic molecules
❖ They obtain organic molecules from their food, that they
ingest and digest within their bodies
❖ Cell Structure and Specialization
❖ Animals are multicellular eukaryotes
❖ They lack cell walls
❖ Their bodies are held together by structural proteins such as
collagen
❖ Nervous tissue and muscle tissues are unique, defining
characteristics of animals
❖ Reproduction and Development
❖ Most animals reproduce sexually with diploid stage usually
dominating the life cycle
❖ A sperm fertilizes an egg, zygote undergoes tepid cell division
called cleavage
❖ Cleavage leads to multicellular and hollow blastula
❖ Blastula undergoes gastrulation forming a gastrula with different
layers of embryonic tissues
❖ Endoderm of archenteron becomes the alimentary canal (the lining
go the digestive tract)
❖ Molecular control of gastrulation conserved among diverse animal
groups
❖ Most animals have at least one larval stage
❖ A Larva is a sexually immature and morphologically distinct from the adult
❖ It eventually undergoes metamorphosis to become a juvenile
❖ A juvenile resembles an adult but is not yet sexually mature
❖ Hox genes regulate development of body form. They are highly conserved but over time
have undergone duplication.
❖ Hox-gene set contains up to 13 genes.
❖ Invertebrates have a single copy of this
❖ 13-gene set
❖ Vertebrates have 4 copies.
❖ Hence, vertebrates have more complex cells, tissues and organs.
, lOMoAR cPSD| 6353920
❖ Neoproterozoic Era (1 Billion–542 Million Years Ago)
❖ Early members of the animal fossil record include the Ediacaran biota, which dates from
565 to 550 million years ago
❖ Paleozoic Era (542–251 Million Years Ago)
❖ The Cambrian explosion (535 to 525 million years ago) marks the earliest fossil appearance
of many major groups of living animals
❖ Most of the fossils from the Cambrian explosion are of bilaterians, organisms that have the
following traits:
❖ Bilaterally symmetric form – Complete digestive tract
❖ One-way digestive system
❖ The Burgess Shale site in B.C. is rich in fossils from approximately 505 million years ago
❖ Several hypotheses regarding cause of Cambrian explosion and decline of Ediacaran biota
❖ New predator-prey relationships
❖ A rise in atmospheric oxygen
❖ The evolution of Hox gene complex
❖ Animal diversity continued to increase through Paleozoic, but punctuated by
mass extinctions (4 extinction events)
❖ Animals began to make an impact on land by 460 million years ago
❖ Mesozoic Era (251–65.5 Million Years Ago)
❖ The first mammals emerged: tiny nocturnal insect eaters
❖ During Mesozoic era, dinosaurs were dominant terrestrial vertebrates.
❖ Flowering plants and insects diversified
❖ Cenozoic Era (65.5 Million Years Ago to the Present)
❖ The beginning of the Cenozoic era followed mass extinctions of both terrestrial and marine
animals
❖ These extinctions included the large, nonflying dinosaurs and marine reptiles
❖ Mammals increased in size and exploited vacated ecological niches
❖ The global climate cooled
❖ Body Plans
❖ A set of morphological and developmental traits
❖ Symmetry
❖ Tissues
❖ Body Cavities
❖ Protostome and Deutrostoem Development
❖ Symmetry
❖ Lack of Symmetry
❖ Radial Symmetry
❖ No front back or left or right
❖ Sessile or planktonic (drifting or weak swimming)
❖ Bilateral Symmetry
❖ Dorsal = Top
❖ Ventral = Bottom
❖ Anterior = head
❖ Posterior = tail
❖ Left and right sides
❖ Cephalization, development of a head.
❖ Move actively and have a central nervous system
Voordelen van het kopen van samenvattingen bij Stuvia op een rij:
Verzekerd van kwaliteit door reviews
Stuvia-klanten hebben meer dan 700.000 samenvattingen beoordeeld. Zo weet je zeker dat je de beste documenten koopt!
Snel en makkelijk kopen
Je betaalt supersnel en eenmalig met iDeal, creditcard of Stuvia-tegoed voor de samenvatting. Zonder lidmaatschap.
Focus op de essentie
Samenvattingen worden geschreven voor en door anderen. Daarom zijn de samenvattingen altijd betrouwbaar en actueel. Zo kom je snel tot de kern!
Veelgestelde vragen
Wat krijg ik als ik dit document koop?
Je krijgt een PDF, die direct beschikbaar is na je aankoop. Het gekochte document is altijd, overal en oneindig toegankelijk via je profiel.
Tevredenheidsgarantie: hoe werkt dat?
Onze tevredenheidsgarantie zorgt ervoor dat je altijd een studiedocument vindt dat goed bij je past. Je vult een formulier in en onze klantenservice regelt de rest.
Van wie koop ik deze samenvatting?
Stuvia is een marktplaats, je koop dit document dus niet van ons, maar van verkoper smartzone. Stuvia faciliteert de betaling aan de verkoper.
Zit ik meteen vast aan een abonnement?
Nee, je koopt alleen deze samenvatting voor €12,76. Je zit daarna nergens aan vast.
