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Bio 114 Final Exam (Answered) 247 Questions and Correct Answers With Verified Solution | Graded A+. Latest Updated Fall 2024/2025.
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Bio 114 Final Exam (Answered) 247 Questions and Correct Answers With Verified Solution | Graded A+. Latest Updated Fall 2024/2025.

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  • August 19, 2024
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  • 2024/2025
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Bio 114 Final Exam (Answered) 247 Questions
and Correct Answers With Verified Solution |
Graded A+. Latest Updated Fall 2024/2025.
All animals have 4

-heterotrophic lifestyle (consumers)
-flexible cell membrane
-glycogen (energy storage product)
-neuromuscular tissue

Germ layer

-collection of similarly produced cells
-like apical meristem

Sponges germ layer

-no germ layer
-Identical cell collection since birth
- function based on location

diploblastic

-two germ layers
-endoderm and ectoderm (tube within a tube)
-nideria, jellyfish, anemone

endoderm vs ectoderm

-creates lining of inside of digestive tract
-creates outer skin and nervous tissue

triploblastic

-endoderm and ectoderm
-mesoderm creates between, bones organism, systems

asymmetrical

no plane
sponges

radial symmetry

can pass multiple planes through angles and get halves
starfish
no lead end of movement (no accumulation of sense organs)

,bilateral

only one plane
humans

filter feeding

most primitive way of gaining food
move medium past you and take organic pieces out
sponges

sponges feeding

cells grow choanocytes that line inside, move flagella to more water through and food sticks to them

choanocyte (collar cells)

ancestors to all animals, so we all have some form

triploblastic body cavity

-between digestive tract and outer body wall
-chest, leg muscles
-red ectoderm, yellow endoderm, filled in with purple mesoderm

acoelacoelomate

-no body cavity

pseudocoelomate

-digestive tube in middle, tube ooo outside, gaps in between
-true body cavity
-organs aren't covered in mesodermal lining, exposed to body fluids and each other

risks and advantages of pseudocoelomates

-organs can bump and damage with movement
-organs are bathes in fluid, nutrients, gasses, efficient

eucoelomate

-mesodermal lining protects organs in body cavity (surrounds heart and kidney and keeps organs
attached to wall)
-need vascular (arteries and veins) system to penetrate lining and bring fluids, nutrients and gasses to
organs

triploblastic body cavity evolution

acoelomates first, then other two around same time

blastosphere

, -fertilized cell keeps dividing to form "ball of creation
-endodermal germ layer infolds to create tube, digestive system
-tube through body, not really in body

protostomes

-blastopore creating tube becomes mouth
-Insects

deuterostomes

-blastopore becomes anus
-humans

no germ layers (protostome phyla)

-phylum porifera
-evolutionary dead end, collar cell ancestor though
-sponges
disassemble and reassemble (totipotency)
-take silica from environment to build spicules (small fibrous crystal that keeps them fluffy and able to
grow into shapes)
-filter feed

diploblastic (protostome phyla)

-two germ layers
-phylum cnidaria
-jellyfish, coral polyps
-blind end gut digestive lining and outer covering
-jellyfish tentacles are offshoots of ectodermal layer
-radially symmetrical

cynidocyte cell

cell in tentacles (harpoon, nematocyst, flagellated collar cell with coiled protein) that can pull things in
makes toxins for jellyfish and anemones

lophotrochozoans (protostome phyla)

-get larger by adding in body segments
-bilaterally symmetrical
-phylum Platyhelminthes (flatworms) and annelida (leeches, earthworms)
-phylum Mollusca (snails, clams, squid)

Phylum- platyhelminthes (flatworms)

acoelomates- high surface area to body ratio, flat, gasses exchanged through tissues of body

Phylum- annelida (leeches, earthworms)

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