chapter 15 and 16

Scientists hypothesize that disrupting our ________ communities may increase our susceptibility to infectious diseases, predispose us to certain cancers, and contribute to conditions such as asthma and other allergies, irritable bowel syndrome, Crohn's disease, and autism.

• pathogen

• microbial

• plant

• protist

The prokaryotic group that tends to inhabit extreme environments belongs to ________.

• Protista

• Euglena

• Bacteria

• Archaea

Which group of prokaryotes aids digestion in cattle, deer, and other animals that obtain nutrition from cellulose?

• methanogens

• halophiles

• dinoflagellates

• cocci

________ is an example of bioremediation.

• The use of prokaryotes to treat sewage

• Cyanobacteria converting atmospheric nitrogen to a form that plants can use

• The use of an autoclave to kill endospores

• A dinoflagellate bloom causing massive fish kills

Eukaryotes that are not fungi, animals, or plants are classified in a "catch-all" category called ________.

• prokaryans

• archaea

• protists

• bacteria

Mutualistic associations of plant roots and fungi are called ________.

• mycorrhizae

• mycelia

• hyphae

• shoots

The ________ help(s) plants retain water.

• cuticle

• lignin

• hypha

• mycorrhiza

Which series of terms correctly illustrates the sequence of the origin of modern groups of plants?

• ferns, gymnosperms, angiosperms, bryophytes

• gymnosperms, ferns, bryophytes, angiosperms

• bryophytes, ferns, angiosperms, gymnosperms

• bryophytes, ferns, gymnosperms, angiosperms

Which group of plants lacks vascular tissue?

• cone-bearing plants

• grasses

• mosses

• ferns

________ are seedless vascular plants.

• Ferns

• Angiosperms

• Bryophytes

• Gymnosperms