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WorksheetsBiology EOC Review #4
Total questions: 15
Worksheet time: 15mins
This chart shows the results of several crosses with white-feathered chickens and dark-feathered chickens. Which cross would be represented as Aa x aa, where (A) represents a dominant allele and (a) represents a recessive allele?
cross 1
cross 2
cross 3
cross 4
A researcher sprays a new pesticide on thousands of insects of the same species that live in a large field. A few of the insects survive. What can be concluded by the researcher?
The species of insects will likely become resistant to the pesticide.
The ideal interval between the first and second applications of the pesticide should be increased.
The pesticide has no effect on the species.
The concentration of the pesticide was too weak.
According to fossil records, the horses that lived 50 million years ago were much smaller, weaker, and slower than modern horses. Which process is most likely responsible for the changes that have led to the increased size, strength, and speed in horses?
commensalism
inbreeding
migration
natural selection
In a particular species of plants, when the soil pH is greater than 7, blue flowers are produced. However, when the soil pH is less than 7, pink flowers are produced. Which statement best explains the color change in the plant?
Multiple alleles determine the color of the flowers.
The change in flower color is a result of a mutation.
Polygenic inheritance produces the different flower colors.
The environment influences the expression of the gene for flower color.
A cloned plant has a diploid chromosome number of 12. What is the diploid chromosome number of the plant cell that was used to produce the cloned plant?
6
12
18
24
This diagram shows a diploid cell with two pairs of homologous chromosomes. Due to independent assortment, what is the possible genetic make-up of gametes produced by this organism?
SsTt
Ss, Tt
S, s, T, t
ST, St, sT, st
When worker bees return to the hive, they perform a sequence of movements called a waggle dance to show other members of the colony where food is located. Which type of behavior does this best illustrate?
aggressive behavior
courtship behavior
social behavior
territorial behavior
Which process is an example of asexual reproduction?
An amoeba divides in half to form two amoebas.
A bee transfers pollen from one flower to another.
A female fish deposits eggs on a rock, then a male fish fertilizes them.
Earthworms exchange sperm cells.
Which genetic abnormality can be identified through karyotyping?
point mutation
recessive allele
extra chromosome
sex-linked allele
Which structure in the leaf controls the opening and closing of the stoma?
cuticle
epidermis
guard cell
spongy mesophyll
Which kingdoms have photosynthetic organisms?
fungi and plants
fungi and protists
protists and plants
plants and animals
Which sequence shows increasing ecological levels of organization?
organism, population, community, ecosystem
ecosystem, population, organism, community
community, ecosystem, population, organism
population, organism, ecosystem, community
This graph represents changes in human population over a period of 2,000 years. What can be concluded from the graph?
Human population grew at a constant rate over the last 2,000 years.
Human population grew exponentially over the past 200 years.
Human population reached its carrying capacity around the year 1900.
Human population will begin to level off around 2010.
Some birds live in close association with horses. These birds feed on insects that are parasites to horses. Which type of relationship between the horses and these birds does this illustrate?
commensalism
mutualism
parasitism
predation
This diagram shows the flow of carbon in a terrestrial ecosystem. Which will most likely happen if the decomposers are removed from the carbon cycle?
The amount of carbon dioxide in the atmosphere will increase.
The amount of carbon dioxide in the atmosphere will decrease.
The amount of carbon dioxide used by producers will increase.
The amount of carbon dioxide needed by consumers will decrease.
