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Biology - Evolution and Speciation - Quiz

Last updated 5 months ago
17 questions
1

What are the two key points of Darwin's Theory of Evolution?

1

Populations of organisms evolve, individuals do not

1

There were several types of fish in a pond. Over several years, nearby residents noticed that there was less diversity in the pond, the medium sized gray fish had mostly taken over. One person said it made them the "fittest." What did they mean by this?

1

Which of these is a main reason why reproduction is an important step for evolution?

1

Evidence of Evolution.......

6
  • A body structure in a present day organism that no longer serves its original purpose
  • A human has an appendix and a tailbone
  • Body parts that do not have a commom evolutionary origin but are similar in function
  • A dog's front leg and a human's arm have almost identical bone structure
  • A bird wing and a bat wing have very different internal structures, but both allow the organism to fly
  • Structural features with a common evolutionary origin
  • Homologous structures
  • Analogous structures
  • Vestigial organ
1

When the DNA of an organism is altered it is referred to as...

1

True or False: Mutations are caused because of a need, such as a bird having a mutation for a long beak if its food source changes.

1

Mutations are always helpful for organisms

1

Mutations that hurt an organism in one habitat could be helpful in another

1

Categorize each item, you might use some answers more than once.

  • A hurricane wipes out half the beach rose plants on a beach
  • Leads to evolution
  • Some seeds blow on the wind and end up on a new island
  • Some seeds have a mutation that makes them more sticky, so they are able to stay on pollinators longer
  • Can lead to a change in allele frequency
  • A hurricane wipes out the beach plants that have shallow roots, but the ones with deep roots survive
  • Completely random
  • Caused by environmental pressure
  • Natural Selection
  • Genetic Drift
1

A type of insect was brightly colored and often eaten by birds. One brood of the insect had a number of members that had a mutation making them dark colored. Over the next several generations, more and more insects had this helpful trait. Why might this happen?

1

A large highway is built, separating two populations of squirrels who eventually evolve to be different species. What type of speciation is this?

1

There are two species of Potoo bird (yes, this is a real bird!) that were once thought to be the same species. They are identical except for their calls and they do not interbreed, despite living in the same area. This is an example of

1

Which of the following describes geographic isolation?

1

Match the term to the definition

Draggable itemCorresponding Item
postzygotic barriers
single-cell fertilized egg
zygote
multicellular early stage of development (pre-birth)
prezygotic barriers
prevent organisms from mating and producing a fertilized egg
embryo
prevent fertilized eggs from becoming fertile offspring that survive and reproduce
1
  • Two groups of flies live in the same area. One group has a mutation that causes them to prefer the dark, so this group is awake and active at night, while the other group is awake and active during the day. As a result, they never interbreed.
  • A type of bird bases mating choices on elaborate dances by the male. A mutation causes some males to be unable to dance, but a small group of females prefer this, so they become a separate group.
  • A large warehouse is built in the middle of a field, separating two groups of click beetles.
  • A donkey and zebra can produce a zonkey, but a zonkey cannot have babies.
  • Long-stemmed roses and beach roses can produce fertilized seeds and grow new plants, but the plants have weak root systems and die before they are fully grown.
  • A common coqui frog and a whistling coqui mate and produce eggs, but the embryos never develop and the eggs never hatch.
  • Prezygotic Barrier
  • Postzygotic Barrier