Biology PLC - Exit Ticket - Day 4

What is the term for a relationship between two species where one benefits and the other is harmed?

• Mutualism

• Commensalism

• Parasitism

• Competition

Answer explanation

The term for a relationship where one species benefits at the expense of another is called parasitism. In this interaction, the parasite gains resources or benefits while harming the host.

Tags

TX.112.42.C.13.A.

Which of the following is an example of a mutualistic relationship?

• A lion hunting a zebra

• A bee pollinating a flower

• A tick feeding on a dog

• A bird eating seeds

Answer explanation

A bee pollinating a flower is a mutualistic relationship because both species benefit: the bee gets food (nectar), and the flower gets help with reproduction through pollination.

Tags

TX.112.42.C.13.A.

How does the disruption of the nitrogen cycle affect ecosystem stability?

Answer explanation

Disruption of the nitrogen cycle reduces the availability of essential nutrients, leading to nutrient depletion in soil. This negatively impacts plant growth and overall ecosystem stability.

Tags

NGSS.MS-LS2-3

NGSS.MS-LS2-4

Match the following ecological concepts with their representations.

• Explains the conversion of nitrogen into various chemical forms as it circulates among the atmosphere, terrestrial, and marine ecosystems.

• Energy pyramid

• Illustrates the flow of energy through different trophic levels.

• Carbon cycle

• Describes the process of carbon moving through the atmosphere, biosphere, and geosphere.

• Food web

• Represents the complex network of feeding relationships in an ecosystem.

• Nitrogen cycle

Answer explanation

The energy pyramid effectively illustrates the flow of energy through trophic levels, showing how energy decreases from producers to top consumers, unlike food webs, which depict feeding relationships.

Tags

TX.112.42.C.13.B.

Human activities can lead to changes in biodiversity by (a)   .

• By increasing the number of species
• By introducing invasive species
• By stabilizing ecosystems
• By reducing pollution

Answer explanation

Human activities can lead to changes in biodiversity by introducing invasive species, which can outcompete native species, disrupt ecosystems, and reduce overall biodiversity. This is a significant threat to ecological balance.

Tags

TX.112.42.C.13.D.

Analyze and explain the impact of deforestation on the carbon cycle.

Answer explanation

Deforestation reduces the number of trees that absorb carbon dioxide, leading to increased atmospheric carbon levels. This disruption alters the carbon balance, contributing to climate change.

Tags

NGSS.MS-ESS2-1

NGSS.MS-ESS3-4

NGSS.MS-LS1-6

A decrease in predator population might affect an ecosystem by (a)   .

• It increases prey population, leadi
• It stabilizes the ecosystem
• It decreases prey population
• It has no effect on the ecosystem

Answer explanation

A decrease in predator population allows prey to thrive, leading to an increase in their numbers. This can result in overgrazing, which negatively impacts vegetation and overall ecosystem health.

Tags

TX.112.42.C.13.A.

The significance of the carbon cycle to ecosystem stability is that it (a)   the Earth's temperature.

• provides energy for photosynthesis
• regulates the Earth's temperature
• supports the growth of aquatic plan
• stabilizes the nitrogen cycle

Answer explanation

The carbon cycle is crucial for regulating the Earth's temperature by controlling greenhouse gas levels. This balance helps maintain ecosystem stability, making it essential for life on Earth.

Tags

TX.112.42.C.13.C.

The introduction of a non-native species (a)   ecosystem stability.

• It increases biodiversity
• It can lead to the extinction of na
• It has no impact on the ecosystem
• It stabilizes the ecosystem

Answer explanation

The introduction of a non-native species can disrupt the balance of an ecosystem, often leading to competition with native species for resources, which can result in their extinction.

Tags

TX.112.42.C.13.D.

Match the species interactions to their descriptions.

• Mutualism

• One organism benefits from another, while the other neither benefits nor is harmed

• Competition

• Two organisms fight for the same limited resources

• Commensalism

• One organism captures and feeds upon another organism

• Predation

• One organism benefits, while the other is harmed

• Parasistism

• Both organisms benefit from one another

Tags

NGSS.MS-LS2-2