Semester 2 Exam Review

Which kingdom includes autotrophic and heterotrophic, unicellular and multicellular organisms?

• Protista

• Fungi

• Animalia

• Plantae

A population of mice occupies a tree stump in a forest. During the last decade, there has been little change in the number of mice in the population. Which of the following would likely cause the number of mice to decrease quickly?

• a decrease in disease

• a decrease in competition

• an increase in predation

• an increase in length of mating season

In the chart, the missing classification term is

• common name

• domain

• species

• specimen

Which of these groups includes organisms that are MOST closely related?

• class

• family

• genus

• species

Earth is divided into large geographic regions or ________________, which are based on differences in climate.

• biomes

• communities

• ecosystems

• habitats

The single most important limiting factor in any terrestrial biome is

• available water.

• average annual temperature.

• seasonal changes.

• soil type.

Which biome would contain the most biodiversity in deciduous tree species?

• savanna

• taiga

• temperate forest

• tropical rainforest

Which of these would have the most immediate effect on the ability of a plant cell to carry out photosynthesis?

• change in soil pH

• increasing air temperature

• increasing atmospheric humidity

• reduction of light intensity

A group of hikers finds a fallen tree in a forest. The dead tree trunk is covered by mushrooms and other fungi. Later, they find a wild apple tree with many apples lying on the forest floor beneath the tree. The apples are all rotten and decayed by bacteria. Which statement BEST summarizes how these fungi and bacteria organisms are obtaining their food energy?

• The fungus and bacteria are both obtaining their energy by manufacturing food from minerals and sunlight.

• The fungus and bacteria organisms are obtaining the energy they need by decomposing organic matter like dead trees and old apples.

• The fungus and bacteria are both parasitic organisms that obtain food from other living organisms.

• Both fungus and bacteria require well-fertilized soil in which to obtain nutrients needed for chemosynthesis.

According to Darwin, organisms that are best adapted to their environment are more likely to produce offspring than organisms that are less well adapted to their environment. Which phrase is used to summarize this idea?

• evolution through mutation

• species variability

• survival of the fittest

• use and disuse of organs