Population and Predation Worksheet

What will happen to a population of spiders if their birth rate is higher than their death rate? ¿Qué pasará con una población de arañas si su tasa de natalidad es mayor que su tasa de mortalidad?

• the population will increase / la población aumentará

• the population will decrease / la población disminuirá

• the population will stay the same / la población seguirá igual

Which wildebeest population is most affected by predation in the Serengeti? ¿Qué población de ñus se ve más afectada por la depredación en el Serengeti?

• Non-migratory population / Población no migratoria

• Migratory population / Población migratoria

• All populations are equally affected / Todas las poblaciones se ven igualmente afectadas

Wildebeest populations are strongly affected by certain bottom-up factors. Which of the following is a bottom-up factor?

• predators, such as lions / Depredadores, como leones

• parasites / parásitos

• rainfall / lluvia

• earthquakes / temblores

Answer explanation

Rainfall is a bottom-up factor as it directly affects the availability of food and water for wildebeest populations. In contrast, predators and parasites are top-down factors, while earthquakes are unrelated to population dynamics.

In the Wasatch Mountains, mountain lions prey on (eat) mule deer. Which population has a higher carrying capacity (in terms of population number)? En las montañas Wasatch, los pumas se alimentan de ciervos bura (se los comen).

• Mule deer / Venado bura

• Mountain lions / Leones de montaña

• They would both be the same / Ambos serían los mismos

According to the graph below, what is the approximate carrying capacity of wildebeests in the Serengeti? (wildebeest numbers are the black circles and left y-axis) Según el siguiente gráfico, ¿cuál es la capacidad de carga aproximada de los ñus en el Serengeti? (Los números de los ñus son los círculos negros y el eje y izquierdo)

• 1,300,000

• 1,600,000

• 400,000

• 800,000

If a population has unlimited resources, what will their population growth curve likely be?

• Exponential / Exponencial

• Logistic / Logístico

• Linear / Lineal

• Parabolic / Parabólico

Answer explanation

With unlimited resources, a population can grow rapidly without constraints, leading to an exponential growth curve. This means the population increases at a constant rate, resulting in a J-shaped curve.

Which kind of population growth is shown on the graph below?

• Logistic / Logístico

• Exponential / Exponencial

• Linear / Lineal

• Comical / Cómico

Answer explanation

The graph shows logistic growth, characterized by an initial exponential increase followed by a slowdown as the population reaches carrying capacity, unlike exponential growth which continues unchecked.

What does the graph represent?

• Emigration

• Exponential growth

• Immigration

• Logistic Growth

Answer explanation

The graph represents exponential growth, characterized by a rapid increase in population over time, where the growth rate is proportional to the current population size.

Which point on the graph represents carrying capacity?

• A

• B

• C

• D

Answer explanation

Point D on the graph represents the carrying capacity, which is the maximum population size that the environment can sustain. It indicates the level at which resources are balanced with the population.

Tags

NGSS.MS-LS2-1

NGSS.MS-LS2-4

If the number of births in a population is the same as the number of deaths in a population, what will happen to the growth of the population?

• It will increase.

• It will decrease.

• It will stay the same.

• It will fluctuate.

Answer explanation

When the number of births equals the number of deaths, the population remains stable. Therefore, the growth of the population will stay the same.