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WorksheetsBiodiversity and Evolution
Total questions: 25
Worksheet time: 9mins
The evolutionary process where a new species arise is called _____
artificial selection
genetic variation
natural selection
speciation
The evolutionary process of the Galapagos finches where a single lineage gave rise to species occupying diverse environmental niches is an example of _____
adaptive radiation
allopatric speciation
tempo speciation
reproductive barriers
A species of sea animals lived and bred for thousands of years. Suddenly, the sea level changed and the bodies of the species developed in order to accommodate the change in their environment. From then on, this species is evolutionary different from their ancestors. This is an example of _____.
gradualism
natural selection
punctuated equilibrium
speciation
Which among the evidences of evolution is portrayed in the image?
The evolution of the HAND (top row) and FOOT (bottom row), as revealed in skeletal structure.
A, a primitive reptile;
B, C, mammal-like reptiles;
D, a lemur, representing a primitive mammalian type;
E, man.
biochemical evidence
comparative anatomy
fossil records
observable events
A new plant species X developed and formed from hybridization of species Y(2n = 12) and Z (2n = 16) Species X, would probably produce gametes with a chromosome number of _____
12
14
56
none of the above
A large population is less likely to undergo speciation compared to a small and isolated population because a population _____
is more susceptible to gene flow
is more affected by a genetic drift
is more subject to errors during meiosis
contains a greater amount of genetic diversity
Which example shows genetic variation in a species?
hair color
different types of maize
different eye colors in humans
none of the above
Which of the following is NOT true about speciation?
it is a result of macroevolution
geographic isolations leads to speciation
it is an evolutionary process where a new species may arise
none of the above
Which of the following situations is an example of natural selection?
the growing number of pest-resistant insects
the disappearance of short-necked giraffe due to scarcity of food
the appearance of peppered moths and scarcity of white moths due to the Industrial Revolution
All of the above
Which of the following would be an example of a phenotype?
scores obtained after an exam
amount of iron in different paperclips
coat colors and patterns of a common housecat
presence/absence of drug-resistant genes in bacteria
How can mutation be passed down to future generations?
through direct skin contact
if the next generation asks for the mutation
if the mutation occurs in gamete-producing cells
eating the same things the previous generations ate
Evolution is a process that generally takes _____ to accomplish
days
weeks
months
years
In relation to natural selection, evolution is the _____
mechanism
outcome
process
purpose
Speciation _____ an ecosystem's biodiversity.
decreases
destabilizes
has no effect on
increases
Which of the following correctly defines an allopatric speciation?
A population partially divided via geographic barriers, reducing the likelihood that the two populations will breed
A population domesticated by humans, who actively select desirable traits while disposing of unwanted traits
A population completely divided via geographic barriers, preventing genetic exchange between the two populations
A population created from a parent population, while within the same geographic location as the parent population
What is the primary cause of sympatric speciation?
interbreeding between two closely related species, resulting in hybrid offspring
sudden reduction of population size due to destructive events (such as natural disasters)
errors during cell division, resulting in the formation of an extra set/s of chromosomes
formation of reproductive barriers, preventing the separated populations from breeding with each other
Why are hybrids sterile?
they lack reproductive organs
they do not want to reproduce
their reproductive organs are incompatible with other organisms
their chromosomes do not properly form homologous pairs during meiosis
An ancient species of fish slowly diversifies into several modern species of fish through the accumulation of minor changes over a very long time. This would be an example of _____
adaptive radiation
gradual equilibrium
punctuated equilibrium
tempo of speciation
Which of these is NOT a product of artificial selection?
dog
gumamela
milkfish
Philippine eagle
The identification of species based on their structural features is called _____ concept
biological
ecological
morphological
polygenetic
Organisms that are less likely to evolve over a long period of time are more likely to be found in _____
outer space
very soluble habitats
areas occupied by humans
ecosystems with very little rainfall
Which of these can reduce the frequency of certain alleles in a given population?
artificial selection
genetic drift
natural selection
all of the above
Which of the following statements about evolution is true?
evolution promotes genetic diversity
evolution can be initiated by natural or artificial means
evolution selects traits that are best suited to the current environment
all of the above
In a cold, snowy environment, which of the following traits would be best suited for survival?
a thick layer of fat for insulation
long legs in order to move quickly
brown skin/feathers/fur for camouflage
fast metabolisms to produce lots of energy
Which of the following is an example of sympatric speciation?
the construction of a dam partially prevents two populations of fish from interacting with each other
a species of grass begins growing in a portion of its habitat that wa damaged by a volcanic eruption
the formation of a mountain range divides a population of butterflies into two separate groups that cannot interact with each other
in a forest, there is a population of birds that normally eats nuts. However, a small subset of that population has begun eating soft fruit
