4. Define the terms monogenetic and digenetic. Of thethree organisms discussed which are monogenetic and which aredigenetic?
5. Gregarines are not often studied because they do notparasitize vertebrates, and seem to
cause not so serious damage to their invertebrate hosts.Gregarines are species-specific
parasites of a wide range of invertebrates from phylaArthropoda (including crustaceans,
insects, myriapods), Annelida (including polychaetes,oligochaetes and leeches),
Nemertea, Mollusca, Echinodermata, andUrochordata.
The gregarines that you worked with infects the organism________________________.
It is a __________________________ (vertebrate orinvertebrate). This organism belongs
to the phylum _________________
