BIO 106 Exam 2 - Questions based off LBLs

_______________ are similar anatomical features in different species that do not have a known common ancestor a. analogies b. homologies

a. analogies

when a type of pigeon is hunted almost to extinction, the resulting survivors form a population. this population is less genetically diverse than the original population. this is an example best described by a. bottleneck effect b. stabilizing selection c. artificial selection d. founder effect e. catastrophism

a. bottleneck effect

james hutton proposed a. gradualism b. uniformitarianism c. catastrophism d. evolution e. scala naturae

a. gradualism

individuals in a population that have a variation which gives them an advantage in their environment are more likely to... a. survive and reproduce b. die and not reproduce c. move to a different environment d. change their characteristics to fit the environment

a. survive and reproduce

what is the cell wall of a hyphae made of? a. cellulose b. chitin c. lipids d. cytoplasm e. plasma membrane

b. chitin

gymnosperm bear their seed on the surfaces of ... a. leaves b. cones c. stems d. fruits

b. cones

when two species both have similar anatomical structures that were inherited from the same ancestor that also had them, the similarities are referred to as being: a. homoplasies b. homologies c. neither of the above

b. homologies

pollen represents the male gametophyte in gymnosperms and angiosperms. an angiosperm pollen tube normally contains how many haploid sperm nuclei? a. 0 b. 1 c. 2 d. 3

c. 2

__________ speciation occurs when geographic isolation creates a reproductive barrier a. polypatric b. parapatric c. allopatric d. sympatric e. schizopatric

c. allopatric

which one below is NOT a reproductive isolating mechanism a. temporal isolation b. behavioral isolation c. individual isolation d. mechanical isolation e. habitat isolation

c. individual isolation

of the following, which is NOT part of darwin's theory of natural selection? a. suitable variations in a population tend to be passed on while unsuitable variations in a population are not b. species can produce more offspring than their environment can support, and many of these offspring fail to survive and reproduce c. individuals with variation suitable to their environment have shorter life spans and produces fewer offspring

c. individuals with variation suitable to their environment have shorter life spans and produces fewer offspring

a key to speciation is _______________ of populations a. extinction b. reduced growth c. reproductive isolation

c. reproductive isolation

gymnosperm dont develop fruits because... a. they lack leaves b. they have flowers c. they dont have an ovary wall d. they only have one integument around the embryo sac e. they rely on wind pollination

c. they dont have an ovary wall

who invented the binomial system? a. george cuvier b. james hutton c. charles darwin d. carolus linnaeus e. ernst mayr

d. carolus linnaeus

what two tissues result from the double fertilization in angiosperms? a. gametophyte and sporophyte b. zygote and endosperm c. seed and flower d. embryo and endosperm e. root and shoot

d. embryo and endosperm

plants that bear two types of spores resulting in male and female gametophytes are called a. heterozygous b. homozygous c. homosporous d. heterosporous e. omnisporous

d. heterosporous

what is the evolutionary advantage of fruit development? 1. better seed dispersal 2. better seed protection 3. attracts pollinators 4. increased nutrients for the seeds a. all of the above b. 1 and 2 c. 1 and 3 d. 2 and 4 e. 2 and 3

b. 1 and 2