Sample Final Questions

1. Among ants, bees and wasps, some eggs develop even if they are not fertilized. Such eggs always develop into

a. diploid males
b. haploid males
c. diploid females
d. haploid females

2. Compared with Hardy-Weinberg predictions, inbred populations have

a. fewer homozygotes
b. more heterozygotes
c. more homozygotes
d. more allelles


3. Over 70% of the mammal fauna disappeared 10,000 years ago on which continents?

a. North America
b. South America
c. Africa
d. Australia

4. One reason for the adaptive radiation of marsupials in Australia is that they were

a. able to escape from the restrictions of natural selection
b. in a new environment with no other organisms as competitors
c. isolated at a crucial time from the placental mammals
d. unable to survive on other continents with more competition

5. The earliest species in our genus is

a. Australopithecus afarensis
b. Homo habilis
c. Homo erectus
d. Homo neanderthalensis


6. About how many genes are carried in the DNA of a typical bacterium such as Escherichia coli?

a. 4 or 5
b. 20 or 30
c. a few hundred
d. 5000 or so

7. The ancestors of the plants, if they existed today, would be classified among the

a. brown algae
b. cellular slime molds
c. green algae
d. red algae

8. The sexual reproductive organs of angiosperms include

a. cones
b. pistil
c. stamens
d. spores

9. The structural, vegetative fungal cells that are genetically analogous to the diploid cells of plants and animals are

a. haploid
b. heterokaryotic
c. homokaryotic
d. triploid

10. Radially symmetrical animals characteristically

a. move rapidly from place to place
b. have well-developed head and tail ends
c. lead a sedentary existence
d. cannot reproduce sexually

11. The signal from the environment that triggers a stereotyped behavior is a

a. fixed action pattern
b. reinforcing stimulus
c. releasing mechanism
d. sign stimulus

12. Which organisms are eusocial?

a. ants
b. termites
c. naked mole-rats
d. dolphins

13. No large animal fossils are found in rocks older than the

a. Permian Period
b. Cretaceous Period
c. Cambrian Period
d. Precambrian Period