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WorksheetsMidterm Study Guide #1
Total questions: 25
Worksheet time: 13mins
What is the most plausible explanation for why the male of most bird species have elaborate plumage and mating rituals?
natural selection
sexual selection
gene flow
genetic drift
Which of the following pertain to movement of plants?
phototropism
All choices are correct
gravitropism
nasticmovements
thigmotropism
Isolating mechanisms that prevent reproductive attempts or make it unlikely that reproductive attempts will be successful are referred to as
pregametic isolating mechanisms.
postgametic isolating mechanisms
postzygotic isolating mechanisms
None of the answer choices are correct
prezygotic reproductive isolating mechanisms
Linnaeus developed his classification system for organisms according to
Darwin's theory of evolution.
LaMarck's theory of evolution
fixity of species and the sequential ladder of life
a theory of descent by modification
Which statement is true about prokaryotes?
They lack ribosomes.
They usually lack a cell wall
They contain a nucleus
They contain a long, linear strand of DNA
They do not divide by mitosis
How can researchers confirm that phloem moves from a source to a sink?
They can observe aphids and cut off their beaks.
They can observe the uptake of ink into the stem of celery.
They can observe the effects of girdling a tree below the level of the majority of leaves.
They can use radioactive tracers to measure the flow of sap between two distances over time.
They can study the cause of maple sap flow in producing syrup.
All of the following statements concerning the evolutionary species concept are true EXCEPT
an evolutionary “family tree" is used to identify species based on a common ancestor.
abrupt changes in traits are indicative of the evolution of a new species in the fossil record.
it relies on identification of certain morphological traits to distinguish one species from another.
it requires that the members of a species share a distinct evolutionary pathway.
The relationship between the fungi and algae in lichens is best described as
an endosymbiotic transfer of the chloroplasts of algae to the hyphae cells.
a possible controlled parasitism wherein the algae are moistened and protected by the fungi, but the fungi do not benefit from the association.
a possible controlled parasitism wherein the fungi withdraw food from the algae and the algae do not benefit from the association.
a complete mixing of the genomes of the two groups at the cellular level.
a simple cooperative mutualism between normally free-living strains.
In the fern life cycle, the _____ generation is dominant
haploid gametophyte
diploid gametophyte
diploid sporophyte
haploid sporophyte
Pollen grains are formed in _____ and ova are formed in _____.
receptacles; peduncles
petals; corolla
stamens; carpels
pistil; stamens
sepals; calyx
Which of the following is a trait that evolved in ALL land plants?
vascular tissue
protection of the embryo
apical growth
seeds
In the moss life cycle, the _____ is the dominant generation.
diploid gametophyte
haploid sporophyte
haploid gametophyte
diploid sporophyte
Homologous structures such as the bones in wings, flippers, and arms would be studied in the field of
biogeography.
the fossil record
comparative biochemistry
comparative anatomy
Which of the following spores is the result of asexual reproduction?
sporangiospores
zygospores
ascospores
basidiospores
Which of the following is a male reproductive structure found in plants?
pistil
pollen cone (anther)
megaspore
archegonia
Which statement is NOT true about stomata?
As guard cells become turgid, the stomataopen.
Guard cells take up potassium ions and water enters the guard cells.
The blue light component of sunlight is a signal that can cause stomata to close.
Stomata open and close on a daily basis, even if kept in the dark, on a circadian rhythm
There are two guard cells around each stomata.
Which statement is NOT true about vascular tissue in plants?
In stems, the vascular tissue is found in the vascular bundles.
Xylem cells are hollow and nonliving, and they form a continuous pipeline that transports water and minerals.
In roots, the vascular tissue is found in the central vascular cylinder.
Phloem cells are hollow and nonliving, and they form a continuous pipeline that transports sugars.
In leaves, the vascular tissue is found in the leaf veins.
Essential plant nutrients include carbon, potassium, calcium, and nitrogen.
TRUE
FALSE
Farmers have been able to genetically engineer a wide variety of crops that possess an enormous diversity of traits. If a farmer wanted to increase the ability of his crops to access ground water that is several meters below ground which type of root system would he want?
fibrous roots
taproot
pneumatophores
prop roots
Which of the following conducting cells are associated with xylem?
tracheids & sieve-tube members
sieve-tube members and companion cells
vessel elements and companion cells
tracheids and vessel elements
Cutting off the tails of mice over several generations should cause the tails of their offspring to become shorter, according to the ideas of which of these scientists?
Lyell
Cuvier
Darwin
Lamarck
Wallace
Which of the following features would be used to construct a phylogenetic tree?
homologous structures
All of the answer choices are correct.
mtDNA sequences
amino acid sequences
fossil record data
all of the answer choices are correct
mtDNA sequences
amino acid sequences
fossil record data
A mushroom would produce a sexual spore known as a(n)
basidiospore
hypha
ascospore
mycelium
conidium
Which feature has to be present in a protist in order to classify it as a photoautotroph?
the ability to synthesize inorganic compounds
the ability to synthesize organic compounds
the presence of a light-trapping pigment
the presence of mitochondria within the cell
In your analysis of a new bacterial species, you gram stained the bacteria and observed them under the microscope. The bacteria appear to have a round shape and a pink color. Based on this information, you would classify these bacteria as
Gram-positive bacilli.
Gram-positive spirilla
Gram negative bacilli
Gram positive cocci
Gram negative cocci
