Competition and Organism interaction

Not living, or produced by living things

• Abiotic factors

• Biotic factors

• Ecosystem

• Population

Answer explanation

Abiotic factors are not living or produced by living things, making them the correct choice in this context.

Tags

NGSS.MS-LS2-3

Living, or produced by living things

• Biotic factor

• Abiotic factor

• Organisms

• Competition

Answer explanation

Living, or produced by living things, falls under the category of biotic factors in an ecosystem. Biotic factors include all living organisms and their interactions.

Tags

NGSS.MS-LS1-1

NGSS.MS-LS1-5

Hawks and owls eat the same type of food and struggle with one another to get their food. What is this an example of?

• Competition

• Biotic factor

• Symbiosis

• Population

Answer explanation

This is an example of competition as both hawks and owls are fighting for the same food resources.

The specific environment in which all the biotic and abiotic factors in an area interact.

• Ecosystem

• Organism

• Struggle

• Competitive Interaction

Answer explanation

The correct choice is 'Ecosystem' as it refers to the specific environment where all biotic and abiotic factors interact.

Tags

NGSS.MS-LS2-4

NGSS.MS-LS2-3

NGSS.MS-LS2-2

A self-contained living thing.

• Organism

• Population

• Abiotic factor

• Ecosystem

Answer explanation

The correct choice is 'Organism' as it refers to a self-contained living thing, which is an individual living being.

Hawks and brown bears live together in the same habitat. There will be competition between the hawks and the brown bears only if which of the following is true?

• Brown bears hibernate during the winter while hawks remain active.

• Pesticides in the fish population affect hawks’ eggs and decrease their population.

• Both brown bears and hawks feed on the same species of fish.

• Both Shanna and Savanna feed on the same species of snakes.

Answer explanation

The correct choice is that both brown bears and hawks feed on the same species of fish, leading to competition for this shared food source.

Tags

NGSS.MS-LS2-1

NGSS.MS-LS2-2

An increase in which of the following factors is likely to contribute to competition between two members of the same species living in a certain habitat?

• Available food resources

• Population of the species

• Annual snowfall

• Overall size of the habitat

Answer explanation

An increase in the population of the species is likely to contribute to competition between two members of the same species living in a certain habitat as it leads to a higher demand for limited resources.

Tags

NGSS.MS-LS2-1

The population of deer in a certain area is monitored over a period of six years. The data is represented in the graph provided. Which of the following is the most likely explanation for the change in population in 2009?

• Wild dogs, which prey on deer, were being hunted more than usual.

• Snowfall in the previous spring was higher than the yearly average.

• Humans introduced grazing animals that feed on the same plants as the deer.

• More insects that pollinate flowering plants move into the ecosystem.

Answer explanation

The correct choice is humans introduced grazing animals that feed on the same plants as the deer, which likely impacted the deer population in 2009.

Tags

NGSS.MS-LS2-1

NGSS.MS-LS2-4

A student wants to investigate competition between two organisms. For the investigation, it is most important that the student should choose organisms that –

• reproduce at a faster rate.

• are both active during the night.

• have the different adaptations.

• require the same resources.

Answer explanation

The student should choose organisms that require the same resources to accurately investigate competition between them.

Tags

NGSS.MS-LS2-1

Competition becomes more important as the number of individuals ______ or the availability of resources _________.

• increases, decreases

• increases, increases

• decreases, increases

• decreases, decreases

Answer explanation

Competition increases when the number of individuals increases or the availability of resources decreases, leading to a higher level of importance in the competition.

Tags

NGSS.MS-LS2-1

NGSS.MS-LS2-4