Unit A — Introduction

1. The fact that no two members of the same species are absolutely identical is an example of
diversity.
homeostasis.
change through time.
structural adaptation.

2. Which of the following is the BEST example of the biological principle of structural adaptations?
Pigs have litters.
Snakes eat frogs.
There are many breeds of dogs.
Cacti needles are modified branches.

3. The fact that some flowers close at night and open during the day is an example of
continuity.
interaction.
homeostasis.
structural adaptation.

4. A litter of puppies being born to a dog is an example of
continuity.
interactions.
changes through time.
structural adaptations.

5. The relationship between a carnivore (wolf) and a herbivore (rabbit) is an example of
unity.
interactions.
changes through time.
structural adaptations.

6. Which levels of biological organization includes all the others listed?
Biome.
Ecosystem.
Population.
Community.

7. What is a group of tissues with a unifying function called?
Cell.
Organ.
Organism.
Organ system.

8. Biology is the study of
life.
plants.
animals.
organisms.

9. Which of the following levels of study in biology is MORE GENERAL than “community”?
Species.
Ecosystem.
Population.
Organ system.

10. Which of the following sequences correctly specifies the study of insects?
Biology – botany – entomology.
Zoology – biology – insectology.
Biology – zoology – entomology.
Biology – zoology – microbiology.