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Biology 1402 Test 3 Held Exam Questions with Detailed, (COMPLETE ANSWERS), 2024; 100% TRUSTED Complete, trusted solutions and explanations $7.99   Add to cart
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Biology 1402 Test 3 Held Exam Questions with Detailed, (COMPLETE ANSWERS), 2024; 100% TRUSTED Complete, trusted solutions and explanations
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Biology 1402 Test 3 Held Exam Questions with Detailed, (COMPLETE ANSWERS), 2024; 100% TRUSTED Complete, trusted solutions and explanations

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  • November 17, 2024
  • 12
  • 2024/2025
  • Exam (elaborations)
  • Questions & answers

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Biology 1402 Test 3 Held
Study online at https://quizlet.com/_f86v7q

1. Larva An early stage in the life cycle of an organism that will
undergo complete metamorphosis.

2. Metamorphosis A marked change in form, character, or function; a trans-
formation

3. Invertebrate An animal without a backbone

4. Vertebrate An animal with a backbone

5. Bilateral symme- Body plan in which only a single, imaginary line can divide
try the body into two equal halves.

6. Coelom Body cavity

7. Cephalization concentration of sense organs and nerve cells at the front
of an animal's body
Get a head

8. Radial symmetry Symmetry about a central axis.

9. pseudocoelom body cavity between the endoderm and mesoderm tis-
sues that is partially lined with mesoderm tissue

10. segmentation subdivide main axis of body into stripes, Body is made up
of a series of fused rings; external and internal structures
are repeated segment by segment

11. 2-ended gastro-intestinal tract= mouth-anus

12. sac-like gut only one opening for both waste and food

13. Porifera (pores)* Ex: Sponges
sessile (stationary) filter feeders, supportive extracellular
matrix, sac-like gut, vase shaped
incurrent pores(water exits via mouth), Choanocytes( cil-
iated cells = human lungs),
amoebocytes (crawling cells=macrophages)

14.


, Biology 1402 Test 3 Held
Study online at https://quizlet.com/_f86v7q
Cnidaria (nee- Ex: Jellyfish, hydras, corals, sea anemones
dle)* shaped like vases (polyps) or umbrellas(medusa)
Nerves= loose network
Bizarre= Regenerate lost parts
Mythology= hydra & medusa

15. Platyhelminthes Ex: flatworms, tapeworms
(flat worms)* Head: "brain" senses for light, chemicals, pressure
GPP/Evol: constraint: small
Bizarre= mouth=navel

16. Nematodes* Roundworms
Pseudocoelom, no muscle around gut
trichinosis

17. Molluscs* Snails, Octopuses, Clams
bilateral symmetry, open circulatory system
bizarre= eyes on tentacles
GPP/evol. Convergence (discovery of lens)

18. Annelids (tiny earthworms, leeches
rings)* segments, gut specializations, 2-ended gut, closed circu-
latory system
GPP/Evol.= Opportunites, not just constraints
Hermpahrodites

19. Arthropods Insects, spiders, crab, lobsters, centipedes
(jointed foot)* Crustaceans and insects, largest group of animals on
earth.
exoskeleton, specialized segments: appendages, acute
senses
Metamorphosis: larva, pupil, adult

20. Echinoderms sea stars, sea urchins
(spiny skin)* Bilaterally symmetric, endoskeleton,
*tube feet

21. Choanocyte Collar cells that line the body cavity and have flagella that
circulate water in sponges

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