Apologia Marine Biology module 4 | Baamboozle - Baamboozle

What produces gametes in a sponge?

either the amoebocytes or the collar cells

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Name the directions on the image?

A) Dorsal, B) Ventral, C) Anterior D) Posterior

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What is the difference between a polyp and a medusa?

a polyp-an attached Cnidarian stage appearing sac like or barrel like. Medusa- a free swimming Cnidarian stage, appearing bell like or umbrella like

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What cells are found in the mesoglea of a Cnidarian? and what do they do?

Amoebocytes, they produce the skeletal structure, perform digestion and repair cell damage.

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Which phylums have a true gut and which ones do not?

Do: nemetera (ribbon woms), Nematoda, Polychaeta, annelida Don't: cndarians, Ctemophora, platyhelminthes

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What kind of symmetry does this have?

Radial (pentamerous)

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What kind of symbiosis do these two organisms demonstrate?

Mutualism

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When does a sponge produce a gemule? Why?

When the environment is harsh(water too hot, or too cold or pollution) , and the sponges may die

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There are 3 classes of Cnidarians - Hydrozoa, Scyphozoa, and Anthozoa. Give an example of each.

Hydrozoa - hydra or Portuguese man of war, Scyphozoa - jellyfish, Anthozoa - coral, sea anemone, sea pens, sea fans, sea plumes

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trap

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rocket

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fairy

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thief

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boom

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gift

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fairy

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thief

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Do sponges demonstrate metamorphosis?

Yes during sexual reproduction, when they change from the parenchymal larva which is planktonic into a mature sponge which is attached to a substrate.

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Give an example of a parasite talked about in this module?

Fluke or tapeworm - (platyhelminths) roundworms - nematodes

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baam

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gift

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gift

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baam

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What is a parasite and name 2.

An organism that live in or on another organism (host) and benefits by deriving nutrients at the host's expense. Tapeworms, fluke, roundworms

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What is the mesoglea?

The jelly like substance between the inner and outer layers of cells in the Cnidarian

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