Invertebrates 1 Flashcards Preview

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Flashcards in Invertebrates 1 Deck (13)
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1
Q

Phylum Porifera-Sponges

A
  • Only type of animal to have cellular organization
  • Saclike bodies perforated by many pores
  • beating of flagella (choanocytes) produces water currents that flow through pores into central cavity and out the osculum
  • sessile filter feeders
  • Asexual reproduction by fragmentation or budding
2
Q

Asconoid

A

small, tube-shaped flagellated spongocel

3
Q

Syconoid

A

Tubular body, Flagellated canals

4
Q

Leuconoid

A

Most complex, largest. Large colonial masses. Flagellated Chambers

5
Q

Marine Natural Products

A
  • Concerns disciplines of Orgo, biochem, pharmacology, bio, and ecology
  • 12,000+ compounds isolated from marine sources
  • secondary metabolites
6
Q

Phylum Cnidaria

A

Tubular animals that most often reside in shallow marine waters

polyp and medusa
stinging cells:cnidocytes
-fluid filled capsule, nematocyst
-Two layered body sac
   -Outer layer:protective epidermis
  -inner layer:gastrovascular
nerve net
7
Q

Cnidaria symmetry

A

radial

8
Q

Class Scyphozoa

A
Medusa, thick mesogela
Float in open sea
manubrium w/oral lobes
stomach w/ pouches
Sense organs = rhopalium       (statocyst+ocelli)
separate sexes
9
Q

class Cubozoa

A

sea wasp:venemous

10
Q

Class Hydrozoa

A
  • Marine and freshwater
  • a colony of polyps enclosed by a hard, chitinous covering
    - feeding polyps
    - extend far beyond covering
    - have nematocysts on tentacles
  • can have sexual repro
11
Q

Class Anthozoa

A
  • Polyp, no medusa
  • sea anemonies, hard corals, sea fans
  • large gastrovascular cavity w/ septa
  • Ciliated groove: siphonoglyph
  • Circular and Longitudinal muscles
  • Attachment by pedal disc
  • Pedal lasceration
  • Potent nematocysts/Acontia
  • Coral reefs -Hermatypic corals
    • Calcareous cups secreted by polyps (Zooanthellae)
12
Q

Coral requirements

A

warm, clear tropical waters and light salinity of normal seawater

13
Q

Phylum Ctenophora

comb jellies

A
  • 8 comb rows called ctehes; covered by long cilia
  • 2 long tentacles, colloblasts
  • fragile, transparent body
  • no nematocysts
  • apical sense organ
  • voracious appetite
  • Bioluminescence