Exam 2 Clicker Questions Compilation

Some excavates are autotrophic; how did Euglena acquire the ability to photosynthesize? A)This group acquired plastids by endosymbiosis of another photosynthetic organism B)This group evolved a photosynthetic organelle indepenedently

A)This group acquired plastids by endosymbiosis of another photosynthetic organism

You find a unicelluar photosynthetic eukaryote with secondary plastids. Which of these is it definitely NOT? A)red algae B)diatom C)dinoflagellate D)stramenophile

A)red algae

Slime mold are most closely related to... A. Amoebas B. Fungi C. Diatoms D. Excavates

A. Amoebas

You've found a new species of plant. It has a dominant gametophyte generation, along with no true roots or leaves. This organism is most likely a _______. A. Bryophyte B. Gymnosperm C. Angiosperm D. Lycophyte

A. Bryophyte

Which of the following are the closest living relative of land plants? A. Charophytes B. Rhodophytes C. Brown algae D. Dinoflagellates E. Chlorophytes

A. Charophytes

You find something green growing in water. You figure out that its tissues grow from its apical meristems, Armed with this fact, you can confidently rule out the possibility of this green thing being a.... A. Chlorophyte B. Lycophyte C. Bryophyte D. Monilophyte

A. Chlorophyte

What were the first photosynthetic organisms? A. Cyanobacteria, which first appeared in oceans B. Cyanobacteria, which first appeared on land C. Green algae, which first appeared in oceans D. Green algae, which first appeared in freshwater

A. Cyanobacteria, which first appeared in oceans

Which of the following characteristic is shared by all protists? A. Eukaryotic B. Microscopic C. Unicellular D. Symbionts E. Protozoans

A. Eukaryotic

Primary plastids should be surrounded by _______ membranes? A. 1 B. 2 C. 3 D. 4

B. 2

When did plants first colonize land? A. 5 bya B. 500 mya C. 5 mya

B. 500 mya

The transfer of genes from bacteria to eukaryotes is an example of what? A. Vertical gene transfer B. Horizontal gene transfer C. Conjugation D. Transformation

B. Horizontal gene transfer

Bacteria that live in the gut of cows and help digest plant matter are A. Parasites B. Mutualistic symbionts C. Commensalistic symbionts

B. Mutualistic symbionts

Prokaryotes are a... A. Monophyletic group B. Paraphyletic group C. Polyphyletic group D. Oligophyletic group

B. Paraphyletic group

Which of the following describes an organism that obtains energy and carbon by ingesting prey? A. Chemoheterotroph B. Photoheterotroph C. Chemoautotroph D. Photoautotroph E. None of the above

B. Photoheterotroph

Which of the following statements about dinoflagellates is true? A. Their dead cells accumulate on the seafloor, and are mined to serve as a filtering material B. They possess two flagella C. Their walls are usually composed of silica plates D. They are photosynthetic due to primary plastids

B. They possess two flagella

Which of the following type of genetic exchange is correctly matched? A. Via a viral vector: conjugation B. Uptake of DNA from the environment: transformation C. Direct transfer of DNA between living bacterial cells: transduction D. From parent to offspring: horizontal gene transfer

B. Uptake of DNA from the environment: transformation

The group Opisthokonta.... A. is monophyletic and includes only protists B. is monophyletic and includes protists, animals, and fungi C. Is paraphyletic and includes only protists D. Is polyphyletic and includes protists, animals, and fungi E. Is polyphyletic and includes animals and fungi

B. is monophyletic and includes protists, animals, and fungi

What is contained in pollen? A. female gametophyte B. male gametophyte and its gametes C. Sperm only D. Egg only

B. male gametophyte and its gametes

"Green algae" are a... A. monophyletic group B. paraphyletic group C. polyphyletic group

B. paraphyletic groups

This feature is common to all land plants other than bryophytes A. Seeds B. Pollen C. Dominant sporophyte D. Fruit

C. Dominant sporophyte

Which of these is a characteristic of the fern life cycle? A. Reproduction can readily happen in dry habitats, unlike bryophytes B. Can produce fewer spores than bryophytes due to their smaller sporophyte generation C. Fern sporophytes eventually grow independently of the female gametophyte

C. Fern sporophytes eventually grow independently of the female gametophyte

How would you characterize these bacteria? http://www.idimages.org/images/organisms/A00022/A00022_01_h_lab.jpg (bacteria is pink/red after staining) A. Gram +, spiral B. Gram +, coccus C. Gram-, bacillus D. Gram-, vibrio

C. Gram-, bacillus

Which of the following statement is true? A. Bacteria are more closely related to Eukarya than Archaea are B. All Archaea are extremophiles C. Some bacteria are extremophiles D. The exchange of genetic material between prokaryotes via a viral vector is called transformation

C. Some bacteria are extremophiles

Which of these is NOT a characteristic of dinoflagellates? A. Some cause red tides B. Some are photosynthetic C. Some have hair flagella

C. Some have hair flagella

Nitrogen fixation refers to: A. The creation of organic molecules that contain nitrogen B. The conversion of ammonia (NH3) to N2 C. The conversion of N2 to ammonia (NH3) D. The radioactive decay of Carbon-14

C. The conversion of N2 to ammonia (NH3)

Which of the following best describes bacteria? A. They are generally harmful B. They are limited to living in a few habitats C. They are very common in the environment D. They are responsible for diseases in humans like herpes and AIDS

C. They are very common in the environment

What proportion of bacteria are pathogenic? A. Most of them (>50%) B. Some of them (20-50%) C. Very few of them (<1%)

C. Very few of them (<1%)

The life cycle of brown algae shown below is an example of A. gametic life cycle B. zygotic life cycle C. alternation of generations

C. alternation of generations

All protists... A. are microscopic B. can photosynthesize at some stage in their life cycle C. can reproduce asexually D. are prokaryotic

C. can reproduce asexually

Binary fission is A. cell division by meiosis B. cell division by mitosis C. cell division by simple splitting D. exchange of genes between two cells

C. cell division by simple splitting

These purple bacteria live just below the surface of the sediment since they can't tolerate oxygen. They are... A. obligate aerobes B. facultative aerobes C. obligate anaerobes D. aerotolerant anaerobes

C. obligate anaerobes

In what type of environment would you find extreme halophiles living? A.ice B. hot springs C. very salty water D. anoxic swamps

C. very salty water

Which of the following processes release carbon dioxide? A. Respiration B. Decomposition C. Photosynthesis D. Both respiration and decomposition

D. Both respiration and decomposition

Which of the following is NOT a characteristic of Archaea? A.Possess unique cell membranes with branched hydrocarbons B. Prokaryotic C. Possess histones D. More closely related to bacteria than Eukaryotes

D. More closely related to bacteria than Eukaryotes

Which of the following describes an organism that obtains energy from sunlight and carbon from CO2? A. Chemoheterotroph B. Photoheterotroph C. Chemoautotroph D. Photoautotroph E. None of the above

D. Photoautotroph

Which of the following about seed plants is true? A. gymnosperms have become the dominant land plants recently, in the cenozoic period B. gymnosperms produce flowers C. angiosperms have "naked seeds" D. angiosperms have endosperm

D. angiosperms have endosperm

Which of the following pairs of protists and their characteristics is mismatched? A. excavata-unicellular protozoans with feeding groove B. rhizaria- pilose pseudopodia C. red algae- primary plastids D. ciliates-red tide organisms E. stramenopile- giant kelp

D. ciliates-red tide organisms

Which of the following prokaryotes is the likely cause of a photosynthetic bloom? A. proteobacteria B. archaea C. actinobacteria D. cyanobacteria

D. cyanobacteria

You find a plant with the following characteristics: flagellated sperm, alternation of generations with the sporophyte dominant, and no seeds. The plant is most closely related to A. mosses B. gymnosperms C. flowering plants D. ferns E. charophytes

D. ferns

Which of the following statement about seed plant life cycle is true? A. sporophytes are multicellular structure where spores are formed B. microspores give rise to female gametophytes C. seed plants exhibit homospory D. gametophytes are highly reduced in size E. spores are diploid

D. gametophytes are highly reduced in size

Plastids that are surrounded by three membranes are evidence of A. budding of the plastids from the nuclear envelope B. evolution from mitochondria C. origin of the plastids from Archaea D. secondary endosymbiosis E. tertiary endosymbiosis

D. secondary endosymbiosis

Which of the following are NOT considered a nonvascular plant? A. liverworts B. mosses C. hornworts D. bryophytes E. lycophytes

E. lycophytes

Foraminiferas and radiolarians are... A. heterotrophs and protozoans B. heterotrophs and algae C. autotrophs and protozoans D. autotrophs and algae

A. heterotrophs and protozoans

Which of the following is most closely related to land plants? A. Green algae B. Red algae C. Brown algae D. Diatoms

A. Green algae

The evolution of a vascular system allowed plants to... A. Grow bigger B. Produce Seeds C. Colonize submerged aquatic habitats D. Better avoid herbivory

A. Grow bigger

In a standard spirit life cycle (e.g land plants), which of these is diploid? A. Sporophyte B. Spore C. Gametophyte D. Gamete

A. Sporophyte

Some protists are more closely related to animals than they are to some other protists A. True B. False

A. True

Prokaryotic cells do not contain which of the following? A. a nuclear membrane B. DNA C. one or more chromosomes D. a cell membrane E. all of the above

A. a nuclear membrane

Which of the following are most limited by moisture levels? A. bryophytes B. lycophytes C. gymnosperms D. angiosperms

A. bryophytes