Unit 3 video quiz questions

Which age-structure diagram best depicts the ages in a population that is in stage 3 of the demographic transition?

B) triangle shape

Scientists determined that a species of a reptile dinosaur cohort had 20% survivorship during the first two years of life, but then the survivorship of those individuals that survived to age 2 had a 70% survivorship to middle age. Survivorship declined later in life. Which of the following best illustrates the shape of the survivorship curve for this species?

C

Which of the following countries has achieved replacement-level fertility?

Country C

Which of the following statements best describes the trends in the data shown in the graph above?

More-developed countries tend to have lower total fertility rates than less-developed countries.

The tropical rain forests are known to have a large variety of animals. One example is the orchid mantis that is highly camouflaged when standing on a certain species of orchid found in tropical environments. Another species, the tropical cockroach, can live anywhere in the rain forest where it can find water and a food source. Which of the following statements best describes why it is predicted that the orchid mantis will be more affected by global climate change than the tropical cockroach will be?

Orchid mantises tend to be advantaged in habitats that remain constant; the rain forest habitat is likely to shift because of global climate change.

Raccoons eat a variety of foods and can live in a variety of habitats, including locations near humans. Tiger salamanders eat an abundance of worms and insects and require wetland habitats so they do not dry out. Which of the following best identifies the two different species?

Raccoons are generalists, and salamanders are specialists.

Salamanders, ospreys, snapping turtles, and beavers all live in aquatic habitats. Salamanders lay their eggs in small freshwater pools and feed on insects. Osprey habitats include rivers, bays, and swamps and the birds feed on fish and other animals in the water or on land. Snapping turtles live in fresh or brackish water and feed on plants, fish, frogs, and snakes. Beavers build lodges on islands, pond banks, and lake shores and eat a variety of shrubs, grasses, and crops. Based on the information provided above, which of the following species would best be classified as a specialist?

Salamanders

Which of the following species is most likely to be an invasive species if introduced into a favorable new habitat

Species- oysters/ number of fertilized eggs produced per year - 5,000,000,000

Which of the following best describes the change in the carrying capacity of the human population if growth is limited by conditions set forth by the Malthusian theory?

The carrying capacity will decrease, and the human population size will experience a dieback.

A certain species of dinosaur laid large numbers of eggs, and the hatchlings had high mortality early in life. But if they survived, the young dinosaurs were able to grow at a rapid pace and disperse into the environment in order to thrive. Based on this information and the graph above, which of the following best characterizes this species of dinosaur?

The dinosaurs were r-strategists and exhibited a Type III survivorship curve

Which of the following claims is best supported by the data in the graph for the population of wolves between 1975 and 1985?

The population declined following depletion of food resources after a population overshoot.

The total fertility rate in country A was 6.8 in 1980. Which of the following statements best supports the change in the total fertility rate in country A between 1980 and 2015?

The total fertility rate decreased as a result of a delay in age of first marriage and increased contraceptive use.

In 1950, a country had a total fertility rate of 5.9. In 2010, the total fertility rate of the country was 2.3. Which of the following is most likely the reason for the change in total fertility rate?

Women had increased educational opportunities and had children later in life.

Which of the following countries is most likely represented in the age structure diagram shown above?

country B

Based on the data in Figure 1, which of the following is the best estimate of the carrying capacity of the moose population?

1,500

Which of the following graphs best displays population size over time of an r-selected species that has just colonized a new habitat with abundant resources?

A