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For plants, which of the following provides protection against desiccation?
A) nonflagellated sperm. B) tracheids. C) secondary compounds. D) cuticle. E) alternation of generations.
The taxon called ‘Phylum Arthropoda’ (insects, crustaceans, spiders, etc.) is thought to have one commonancestor. The nematode worms (roundworms), although they are pseudocoelomates, were not included inArthropoda. Now it appears that nematodes share a common ancestor with the arthropods, and some taxonomistsargue that nematodes should be included in the Arthropods. This fact suggests that the taxon ‘Arthropoda’ as it nowstands (with the common ancestor to arthropods and nematodes, but without the nematodes included) is:
A) monophyletic. B) holophyletic. C) polyphyletic. D) paraphyletic. E) protophyletic.
The pine trees are in the division:
A) Rhodophyta. B) Coniferophyta. C) Anthophyta. D) Bryophyta. E) Pteridophyta.
Corn plants (Zea) have both male and female structures are located in separate flowers, but both flowers arelocated on the same plant. This means that corn are ______ plants.
A) monoecious. B) dioecious.
Which characteristic(s) is/are shared by green algae and all seed plants?
A) pollen. B) cuticle. C) cell walls of cellulose. D) vascular tissue. E) peptidoglycan.
The outermost whorl of modified leaves of a flower (they tend to be green) are the:A) styles. B) petals. C) sepals. D) cotyledons. E) stamens.
Which protistan group are marine, possesses two flagella, and cause red tide?
A) Dinoflagellates. B) Chlorophyta. C) Stramenopila. D) Ciliata. E) Euglenozoa
Rod-shaped cells in long chains would be described as:
A) staphylococci. B) streptococci. C) staphylobacilli. D) streptobacilli.
Certain bacteria are able to withstand environmental extremes because they can form resistant stages called:A) sporangia. B) endospores. C) sporocysts. D) cell walls. E) micronuclei.
A frog’s hind leg and a leaf hopper’s hind leg (a leaf hopper is an insect) are similar in function, but theirdevelopment and underlying structure is completely different. These are examples of ______ structures.
A) paraphyletic. B) homologous. C) analogous. D) polyphyletic. E) cladistic.
The ciliate protistan Paramecium and an insect both belong to the domain:
A) Archaea. B) Bacteria. C) Eukarya. D) Plantae. E) Paramecium and insects are not in the same domain.
The mechanism called ____ refers to the transformation of one entire species over time into another through time.A) anagenesis. B) cladogenesis.
What is incorrect concerning the following scientific name using the concept of binomial nomenclature
(Homo Sapiens)? A) The entire name should not be italicized - Homo Sapiens. B) The s in sapiens should notbe capitalized - Homo sapiens. C) The entire name should be capitalized - HOMO SAPIENS.
D) The h in homo should not be capitalized - homo Sapiens.
E) Only homo should be italicized - Homo Sapiens.
Sexual reproduction (involving meiosis) is a property of: A) all eukaryotes and a few prokaryotes.
B) animals and plants only. C) eukaryotes only. D) prokaryotes only. E) prokaryotes and many protists.
In what way are all protists alike? A) All are multicellular. B) All are capable of photosynthesis.
C) All are marine organisms. D) All are free-living organisms, none are parasitic. E) All are eukaryotic.
Which of the following is true of a superorder? A) a superorder would have more species than would thephylum. B) there could be two or more classes in the superorder. C) there could be two or more orders in thesuperorder. D) two or more superorders make up one order. E) two of the above answers are correct.
Which of the following contrasts is more important than the other answers in separating groups of organismsalive today? A) plants versus animals. B) asexual reproducers versus sexual reproducers.
C) autotrophs versus heterotrophs. D) prokaryotes versus eukaryotes.
E) single-celled versus multi-celled organisms.
Which of the following ‘supergroups’ do the apicomplexans, ciliates, dinoflagellates, diatoms, brown algae, andgolden algae belong? A) Excaviata B) Chromalveolata C) Rhizaria D) Archaeplastida E) Unikonta.
Which of the following statements is true concerning most angiosperms? A) They are homosporous.
B) They all have perfect flowers. C) They have ovules and seeds enclosed in a stamen.
D) They produce triploid endosperm by the fusion of two eggs and one sperm. E) All of the above choices arefalse.
A friend gave you a plant to identify. It has the following characteristics: vascular tissue, a cuticle, nonflagellatedsperm, flowers. You determine it is a:
A) angiosperm. B) fern. C) moss. D) gymnosperm. E) charophyte.
A randomly selected group of organisms from a taxonomic genus should show more genetic variation than arandomly selected group from : A) an order. B) a class. C) a species. D) a kingdom. E) a phylum.
A botanist discovers a new species of plant with a dominant sporophyte, chlorophyll a and b, and a cell wall madeof cellulose. In assigning this plant to a division, all of the following would provide useful information exceptwhether or not the plant has: A) endosperm. B) flowers. C) starch. D) seeds.
E) flagellated sperm.
Photosynthetic protists that have silicon in their cell walls, and are often shaped like little petri dishes, are in theprotistan group: A) Alveolata. B) Chlorophyta. C) Bacillariophyta. D) Porifera. E) Euglenozoa.
In gymnosperms, the gametophyte stage is ______ compared to the sporophyte and the gametophyte is _____upon the sporophyte for protection and nutrition. A) larger in size, dependent. B) smaller in size, dependent.C) larger in size, not dependent. D) smaller in size, not dependent E) similar in size, dependent.
Some protists consume whole organisms. These protists thus are:
A) saprozoic. B) sporozoic. C) microphagic. D) parasitic. E) holozoic.
The water molds are in the protistan group:
A) Oomycota. B) Chlorophyta. C) Phaeophyta D) Ciliata. E) Euglenozoa.
A visiting scientist from another planet is interested in the taxonomy of life on Earth. The visitor examines theanatomy of coyotes, wolves, German shepherds and toy poodles. The visitor notes that shepherds and poodlesinterbreed most readily, but notes that wolves also can interbreed with poodles, shepherds and coyotes, and coyoteswith the poodles and shepherds. All of the crosses produce fertile hybrids. The visitor concludes that they are all ofthe same species. The visitor is using the ___ species concept for determining which organisms are of the samespecies. A) morphological. B) anagenetic. C) phylogenetic. D) biological.
A typical angiosperm sporophyte is: A) not capable of photosynthesis. B) the plant produced by a singlegamete. C) a gamete-producing generation. D) the smaller, short-lived generation, compared to the gametophyte.E) diploid.
Dr. Microwb observed one bacterial cell transferring DNA directly to another cell by the transfer of a plasmid.Dr. Microwb was observing the process of: A) conjugation. B) transformation. C) mutation.
D) transduction. E) meiosis.
Bryophytes never formed tall forests (mats maybe, but not forests) because: A) they possess flagellated sperm.B) they are heterosporous. C) they have endosperm. D) they lack lignified support tissues and vascular tissues tosupport a large tall body. E) the sporophyte is only found in water.
The bacteria that move by modified flagella (axial filaments) running beneath the outer membrane.A) Spirochetes. B) Proteobacteria. C) Chlamydias. D) Gram positive bacteria. E) Cyanobacteria.
In the future, you are an exobiologist aboard the starship Beagle. You travel to Mars, and find organisms that useorganic carbon compounds as a carbon source and as an energy source. You call back and tell your freshman biologyprofessor that you have discovered a new species of
A) photoheterotroph. B) chemoheterotroph. C) photoautotroph. D) chemoautotroph.
Which of the following is a consistent difference between Gram-negative and Gram-positive bacteria?
A) shape. B) size. C) the number of chromosomes. D) the amount of peptidoglycan present in the cell wall.E) the presence or absence of a nucleus.
A protistan cell divides into two daughter cells by the asexual process of:
A) sporogony. B) binary fission. C) meiosis. D) conjugation. E) syngamy.
If two species are in two separate orders, they must also be in two separate __________, in all cases.A) kingdoms. B) classes. C) phyla. D) families. E) subphyla.
What develops from the ovary wall of an angiosperm?
A) pericarp of a fruit. B) plumule. C) radicle. D) seed. E) style.
An organism that must have oxygen present in order for the organism to use for aerobic respiration would becalled: A) a facultative anaerobe. B) an obligate anaerobe. C) an obligate aerobe.
In the life cycle of angiosperms, double fertilization refers to: A) the fertilization of the egg cell by sperm fromtwo different pollen grains. B) the fertilization of the egg cell with the two sperm from a single pollen tube.
C) the fertilization of two separate haploid egg cells within the female gametophyte. D) the fertilization of twoeggs within the archegonium. E) a pollen tube releasing two sperm, one fuses with the egg, the other fuses withtwo other haploid cells to form endosperm.
The contractile vacuoles of a protistan are analogous to your:A) eyes. B) mouth. C) kidneys. D) ears. E) anus.
Ferns are more ‘advanced’ (recently evolved) than mosses because mosses generally lack which structure that isfound in ferns? A) spores. B) gametophytes. C) pollen. D) sporophytes. E) xylem.
Archaeans are considered to be more closely related to eukaryotes than to bacteria. Which of the following is oneof the reasons? A) Like eukaryotes, archaean ribosomes are larger than typical prokaryotic ribosomes.
B) Archaeans have one type of RNA polymerase, like eukaryotes.
C) Archaeans have peptidoglycan in their cell walls, like eukaryotes.
D) Archaean DNA have introns in some cases, like eukaryotes.
Two different Paramecium exchange what form of genetic material by conjugation? A) non-flagellated sperm.B) plasmids. C) macronuclei. D) micronuclei. E) spores.
Which of the following statements is incorrect? A) pollen are sporophytes. B) an anther is part of a sporophyte.C) the embryo sac is a gametophyte. D) a pistil is part of a sporophyte. E) an embryo is a sporophyte.
Which of the following statements (if any) are false? A) Gymnosperms and ferns both have chlorophyl.B) Gymnosperms and ferns both have sporangia. C) Gymnosperms and ferns both have vascular tissues.
D) Gymnosperms and ferns both have leaves. E) All of the above statements (A through D) are actually true.
One group of frogs living today have re-evolved teeth in their jaw, similar to the teeth observed in the fossils ofancestral frog species. This is an example of:
A) homology. B) a homoplasy. C) polyploidy. D) adaptive radiation. E) extinction.
The animals show what type of life cycle? A) gametic. B) sporic. C) zygotic.
Conifers (gymnosperms) differ from ferns in that conifers have ______ and ferns do not.A) roots. B) seeds. C) flowers. D) roots and flowers. E) seeds and flowers.
A flower that has sepals, petals and stamens but lacks carpels is said to be: A) perfect, but incomplete.B) imperfect, but complete. C) imperfect and incomplete. D) perfect and complete.
Convergent evolution: A) means that one species eventually can interbreed with a closely related species.B) relates to small populations which are subject to sizable changes in gene frequencies by chance events.
C) means that individuals cannot breed true because of mutation. D) means that two or more species begin toappear more alike, due to similar responses to the environment. E) two of the above answers are correct.
Which of the following correctly describes the sequence of the evolution of land plants, from the group thatappeared first to the group that appeared last (most recent)?
A) mosses - ferns - flowering plants - conifers B) ferns - mosses - flowering plants - conifers
C) ferns - mosses - conifers - flowering plants D) mosses - conifers - ferns - flowering plants
E) mosses - ferns - conifers - flowering plants
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