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bio 108 lab > Lab 6 > Flashcards

Lab 6 Flashcards

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Biology 101 flashcards
1
Q

Body plan?

A

Set of morphological and developmental traits that characterize anatomical organization

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2
Q

Radial?

A

Found in Cnidaria and Ctenophora

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3
Q

Bilateral?

A

All others

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4
Q

Germ layers?

A

Ectoderm
Endoderm
Mesoderm

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5
Q

Diploblastic?

A

Cnidaria and ctenophora, only form ectoderm and endoderm

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6
Q

Ectoderm?

A

Covers outside of gastrula. rise to CNS and epidermis

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7
Q

endoderm?

A

lines archenteron; gives rise to organ and guts lining

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8
Q

Triploblastic?

A

Develop ectodern and endoderm but also mesoderm

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9
Q

Mesoderm?

A

Gives rise to muscle tissue in adult

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10
Q

Hydrostatic skeletons?

A

invertebrates (triploblastic), consist of fluid that help locomotion (flatworms, nematodes, annelids)

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11
Q

Three body cavities?

A

Coelomate
Pseudocoelomate
Acoelomate

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12
Q

Coelomate?

A

Lined with mesoderm and gut is supported by mesentries

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13
Q

Pseudocoelomate?

A

space between endodermal gut tube and body wall, not completely lined with tissue (found in nematoda)

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14
Q

Acoelomate?

A

no fluid filled cavity between gut and body wall, instead space is filled with parenchyma cells (Platyhelminthes)

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15
Q

Protostome?

A

Spiral determinate, coelem formed by splitting of mesodermic tissue (molluscs annelids), development of mouth by blastopore

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16
Q

Deuterostomes?

A

Radial and indeterminate, anus develops from blastopore (echinoderms, chordates)

17
Q

Cephalization?

A

concentration of sensory structures at the anterior (forward facing) end of an organism

18
Q

Cnidaria?

A

Corals, hydras, anemones.

Unified by cells (cnidocytes) which contain specialised organelles that sting (nematocysts)

19
Q

Platyhelminthes?

A

Flat worms , free living and parasitic

inhabit marine and terrestrial environments

20
Q

Annelida?

A

Segmented worms

21
Q

Nematoda?

A

Roundworms

Harmless

22
Q

Mollusca?

A

Snails,chitons, slugs, squids, octopi
large array of body plans
most intelligent

23
Q

Arthropoda?

A

Most species rich phylum
Insects, beetles
Jointed limbs

bio 108 lab (7 decks)

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