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BIO 101 Exam 6

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Question 1


Structures in plants that produce the gametes are called

Select one:

a. sporangia.

b. fruit.

c. gametophyte.

d. homosporophyte.

e. sporophyte.


Question 2


Bacteria can be beneficial in all but which of the following ways?

Select one:

a. They can be used to clean up oil spill in a process called bioremediation.

b. They can be used in industry to generate products particularly in food processing.

c. They are present on the skin and help crowd out harmful bacteria.

d. They are the primary producers of most ecosystems.

e. They function in waste water purification to remove both organic and inorganic substances.


Question 3


Which fossil evidence is considered an intermediate between reptiles and birds? 

Select one:

a. Archaeopteryx

b. Eusthenopteron

c. Seymouria

d. synapsids

e. therapods


Question 4


Which of the following is NOT a fungus?

Select one:

a. mushroom

b. yeast

c. ringworm

d. molds

e. amoeba


Question 5


The fact that a nucleic acid is a very complicated molecule suggests that

Select one:

a. the RNA-first hypothesis is impossible.

b. the protein-first hypothesis is therefore the only plausible hypothesis.

c. sophisticated enzymes were not present or available to synthesize it.

d. no natural system could ever generate them.

e. RNA could not have arisen on its own by chance, but required enzymes to guide the synthesis of nucleotides and nucleic acids.


Question 6


Seeds contain all of the following EXCEPT

Select one:

a. a seed coat.

b. an endosperm.

c. an embryo.

d. a pollen grain.

e. triploid tissue.


Question 7


A fungal structure that results from sexual reproduction and can survive unfavorable growing conditions is the

Select one:

a. mycelium.

b. sporangium.

c. ascocarp.

d. basidium.

e. zygospore.


Question 8


A pellicle, either rigid or flexible, could be found in

Select one:

a. diatoms.

b. brown and red algae.

c. dinoflagellates.

d. green algae.

e. euglenoids.


Question 9



__________ showed that amino acids can polymerize abiotically when exposed to dry heat.

Select one:

a. A.I. Oparin

b. Stanley Miller

c. Sidney Fox

d. Graham Cairns-Smith

e. Charles Darwin


Question 10


Plants that flourished in the Mesozoic era along with dinosaurs were the

Select one:

a. ferns.

b. bryophytes.

c. cycads.

d. flowering plants.

e. conifers.


Question 11


The Archaea include all of the following EXCEPT the

Select one:

a. methanogens.

b. lichens.

c. halophiles.

d. thermoacidophiles.

e. prokaryotes.


Question 12


Members of which genus of algae are found in ponds and have chloroplasts that are arranged in a spiral?

Select one:

a. Ulva

b. Spirogyra

c. Euglena

d. Chlamydomonas

e. Volvox


Question 13


The geological time scale indicates the order of Eras to be Cenozoic as the most recent, the middle Era is the Mesozoic, with dinosaurs as the major group, and the earliest Era being the Paleozoic. Consider a hillside of rock that surfaces in your backyard that is identified as dating back to the Mesozoic Era. What is possible?

Select one:

a. Fossils from all other strata can still be found underneath if you dig far enough.

b. All periods of fossils had to be laid down in the backyard but higher ones were eroded away.

c. Fossils were mainly deposited when your backyard was sediment, so many layers might be missing, but any layer from Cenozoic to Paleozoic might be found.

d. Fossils were mainly deposited when your backyard was sediment, so many layers might be missing, but any layer from earlier Mesozoic through Paleozoic might be found.

e. Only one layer of fossils can be found at any site.


Question 14


Botanically, a seed is a structure developed from a(n)

Select one:

a. style.

b. ovule.

c. stigma.

d. anther.

e. sepal.


Question 15


Which type of organism will form endospores when faced with unfavorable environmental conditions?

Select one:

a. viruses

b. bacteria

c. algae

d. protozoans

e. fungi


Question 16


Which statement is NOT true about the founder effect?

Select one:

a. It is a form of genetic drift.

b. It produces a high frequency of some rare alleles in a small isolated population.

c. Founding members contain a tiny fraction of the alleles found in the original population.

d. The founder effect occurs when a population is subjected to near extinction and then recovers, so that only a few alleles are left in survivors.

e. Chance determines which alleles are carried by the original founders.


Question 17


Which type of nutrition is believed to have come first?

Select one:

a. autotrophic

b. heterotrophic

c. aerobic

d. photosynthetic

e. catalytic


Question 18


Mass extinctions

Select one:

a. are the result of humans damaging the natural environment.

b. are the result of humans exploiting wildlife and using pesticides.

c. occurred in cycles when organisms fail to evolve.

d. have occurred about 4 or 5 times in fossil record, due in some cases to catastrophic changes.

e. require life to evolve again from protocells.


Question 19



If the frequency of the dominant gene is 0.7, what is the frequency of the recessive gene? 

Select one:

a. also 0.7

b. 0.49 or (0.07)2

c. approximately 0.27 (square root of 0.7)

d. 0.3 (or 1.00 - 0.7)

e. 0.14


Question 20


Which sequence is correct in the life cycle of alternation of generations? 

Select one:

a. gametophyte ® spores ® sporophyte

b. gametophyte ® gametes ® spores ® sporophyte

c. gametophyte → gametes → zygote → spores → sporophyte

d. gametophyte → spores → gametes → zygote → sporophyte

e. gametophyte →  gametes →  zygote → sporophyte → spores


Question 21


The structure that forms most of the flesh of an apple is the

Select one:

a. carpel.

b. sepal.

c. ovary.

d. petal.

e. stamen.


Question 22


Which of these conditions is NOT among the requirements of the Hardy-Weinberg equilibrium?

Select one:

a. no net mutations

b. no net migration of alleles into or out of the population

c. small population with genetic drift

d. no selection of one genotype over another

e. sexually reproducing and random mating population


Question 23


A unicellular alga that has both plant-like photosynthesis and animal-like motility is a(n)

Select one:

a. diatom.

b. dinoflagellate.

c. euglenoid.

d. zooflagellate.

e. red algae.


Question 24


Which of the following organisms does not lead to a fungal disease?

Select one:

a. Varicella

b. Dermatophytes

c. Systemic mycoses

d. Coccidioides immitis

e. Trypanosoma brucei


Question 25


Which statement is NOT true about fiddleheads?

Select one:

a. They are young fronds curled up.

b. They are found in ferns.

c. They are part of the sporophyte generation.

d. They are haploid.

e. They are part of a vascular plant.



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