Download 1 - Effingham County Schools

BELL RINGER- TRY THESE CRCT QUESTIONS ON YOUR OWN SHEET OF PAPER! Use test taking
skills to determine the best answer.
1. Animal fossils are more plentiful than plant fossils because animals contain
a. hard parts such as bones, teeth, and shells.
b. soft parts such as flesh and hair.
c. large amounts of water.
d. small amounts of chemicals.
2. How do mutations change populations over time?
a. Most mutations are harmful and cause species to become extinct
b. Most mutations cause abnormal disease in species
c. Mutations generally have no effect on a population since they are simple changes in DNA
d. Mutation can produce adaptations in organisms that help them survive better in their environment
3. How does an entire population become adapted to its environment?
a. Individuals develop changes during their lifetimes and pass good changes to their offspring.
b. A population chooses which traits will help it survive.
c. Traits that help individuals survive and reproduce become more common in the population over
successful generations.
d. Each new variation becomes an adaptation as the organisms learn how to use it.
4. Meiosis is important to species reproduction because it promotes
a. Genetic variation
b. Genetic mutations
c. Better traits
d. Evolution
5. When humans alter the look or function of an organism over many successive generations they are
practicing
a. Cloning
b. Genetic engineering
c. Inbreeding
d. Selective breeding
6. The fruit fly population in a particular orchard has many members. Each female fly lays many eggs over
the course of her 30-day lifespan. If the environment changed quickly, how would the fruit fly population
likely be affected?
a. The fruit fly population would adapt quickly to the change and survive.
b. The fruit fly population would not adapt at all to the change and would become extinct.
c. The fruit fly population would not adapt at all to the change and would survive.
d. The fruit fly population would adapt to the change and would become extinct.
7. The human appendix is a vestigial structure. How is it evidence of evolution?
a. It provides evidence that organisms have lost traits as they were no longer needed in the
environment
b. It provides evidence that organisms have evolved similar structures that have different functions.
c. It provides evidence that humans and apes have a common ancestor
d. It provides evidence that the diet of humans has changed in the last 100 year
8. Why might the beak of the Akialoa, pictured in Figure 15-7, developed this way?
a. to reach nectar in flowers
b. to scoop up fish
c. to dig through tree bark for insects
d. to crack open seeds
9.
Natural selection can best be defined as the _____.
a. elimination of the smallest organisms by the biggest organisms
b. survival and reproduction of the organisms that are genetically best adapted to the environment
c. survival and reproduction of the organisms that occupy the largest area
d. survival of the biggest and strongest organisms in a population
10. The structures shown in Figure 15-5 are _____.
a. homologous
b. analogous
c. vestigial
d. heterologous