bio 2 exam 2

amoebas move and obtain food by means of ________

pseudopodia

what do ferns lack

seeds

this is conjugation in paramecium. what is the outcome of the process illustrated in the accompanying figure?

two new genetically identical cells that differ genetically from what they were before

in chapter 8, Wilson considers the earths biosphere to be largely _______

unexplored

xylem and phloem make up the ______ of a plant

vascular tissue

in seed plants, the _____ conducts water upward from the roots to the leaves

xylem

in chapter 7 of Wilson's book the diversity of life, _______ is the term applied to the spread of species of common ancestry into different niches

adaptive radiation

extra cred

conifers

which group of heterohonts contains individuals that are typically unicellular and form siliceous shells? (this is a v long question 34)

diatoms

the floating often microscopic organisms that are base of food webs in aquatic ecosystems are collectively called __________

plankton

the Irish potato famine of the 19th century was precipitated by an Oomycete in the genus ______, which causes late blight of potato

Phytophthora

cellular slime molds feed as individuals _________ cells

amoeboid

______________ which compose a single phylum, dominate most terrestrial landscapes and exhibit great diversity in both vegetative a reproductive structures

angiosperms

most protists are :

aquatic

mosses and other _________ lack vascular tissues and do not form true roots, stems or leaves

bryophytes

members of which group are known to form blooms known as red tides

dinoflagellates

flowering plants, the _____ generation is dominant

diploid sporophyte

what unique reproductive process of a flowering plant accounts for its evolutionary success?

double fertilization

after fertilization occurs in plants, the fertilized egg develops into a multicellular ______ within the archegonium

embryo

E.O wilson in chapter 7 of the diversity of life claims that the East American "cichlids are the lacustrine equivalents of the Hawaiian honeycreepers. cichlids are ________"

fishes

water molds ( Oomycetes) are heterokonts, organisms that have two different kinds of ____________

flagella

members of which protists group sone of the fossilized deposits in the unique geological formation of the white cliffs of dover?

foraminiferans

Malaria __________

is caused by the apicomplexan Plasmodium falciparum, that spends part of its life cycle in the anopheles mosquito and part in humans

a strengthening compound found in cell walls of vascular plants is ________

lignin

most conifers have separate male and female reproductive parts on the same tree. This condition is referred to as

monoecious

plasmodial slime molds feed as ____________ plasmodia

multi-nucleate

microorganisms that cause disease are called ________

pathogens

___________ have cell walls with cellulose and characteristically obtain most of their energy from sunlight via photosynthesis using chlorophyll continued in chloroplasts, which gives them their green color.

plants

the immature male gametophytes of pine are called __________

pollen grains

why might be seeds reproductively superior to spores

seeds contain a young plant and also are protected by a seed coat

the __________are specialized excavates that live in the guts of termite and wood-eating cockroaches. they ingest wood chips from the wood that termites or roaches eat and rely on endosymbiotic bacteria to digest cellulose in the wood. the insects, ___________, and bacteria all obtain their nutrients from this source. this is an excellent example of mutualism

trichonymphs

most dinoflagellates are a part of marine plankton. the _______ are endosymbiotic, photosynthetic dinoflagellates found in certain marine invertebrates; their mutualistic relationship with coral enhances the corals' reef-building ability

zooxanthellae

according to E.O. Wilson, one important way of describing diversity is by level of biological organization. the organizational levels of importance to biological diversity are arrayed in this hierarchy: __________

Ecosystem, Community, Guild, Species, Organisms, Gene

you find a unicellular organism that forms lobe-like pseudopodia. when you expose the cell to cAMP they aggregate into a slug like structure. based on this information you can correctly conclude that this organism is known as:

Dictyostelium discoideum (a cellular slime mold)

stomata

allow gas change for photosynthesis and respiration

the most diverse, successful, and familiar group of plants today are the

amgiosperms

in the diversity of life, E.O. Wilson states that the more than 100 species of hawaiian honey creepers "... offer a textbook display of radiation and convergence on a scale that can be dissected and explained with reasonable certitud."Honeycreepers are_____

birds

kelps are ______ with multicellular bodies differentiated into blades, stripes, holdfasts, and gas-filled floats

brown algae

animals, fungi and most bacteria are known as _________, bc they obtain energy from chemicals and bc they cannot fix carbon, they use organic molecules produced by other organisms as the building blocks from which they synthesize the carbon compounds they need

chemoheterotrophs

ciliates us _______ for locomotion

cilia

the airtight waterproof waxy layer that covers aerial parts of plants is the __________

cuticle

in chapter nine, E.O. Wilson uses the sea otter as an example of a classic ________ species. since the prey numbers are low, the _________ predator numbers can be even lower and still effective.

keystone

what do large female cones of a pine tree contain

megasporangia

which part of a flowering plant eventually becomes the fruit?

ovary

which part of a flowering plant eventually becomes the seed?

ovule