Saturday, December 1, 2007

Concept 28.7

Question:
I. Contrast the pseudopodia of amoebozoans and forams.

Answer:
a) Amoebozoans have lobe-shaped pseudopodia, whereas forams have threadlike pseudopodia.


Question:
II. In what sense is 'fungus animal' a fitting description of a slime mold? In what sense is it not a fitting description?

Answer:
a) Slime molds are fungus-like in that they produce fruiting bodies that aid in the dispersal of spores, and they are animal-like in that they are motile and ingest food. However, slime molds are more closely related to gymnamoebas and entamoebas that to fungi or animals.

Question:
III. Does cooperation between cells exist in amoebozoans? Explain.

Answer:
a) Yes, in the life cycle of a cellular slime mold, individual amoebas may congregate in response to a chemical signal, forming a slug-like aggregate from that can move. Then some of the cells from a stalk that supports an asexual fruiting body.

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