Ecology SOL Unit 6.3 - Community Interactions

What is a biological community?

• A single species living in an area

• All the populations of different species living together in an area

• A group of plants in a forest

• A single organism's habitat

Answer explanation

A biological community consists of all the populations of different species living together in an area, making the correct choice the one that encompasses multiple species rather than just one or a group of plants.

What is an interspecific interaction?

• Interaction between organisms of the same species

• Interaction between two or more species in a community

• Interaction between plants and animals

• Interaction within a single organism

Answer explanation

An interspecific interaction refers to the relationships between different species within a community, making 'Interaction between two or more species in a community' the correct choice. Other options describe interactions within a single species or organism.

Tags

NGSS.MS-LS2-2

What happens during competition between species?

• One species benefits, the other is unaffected

• Both species are negatively affected

• One species is harmed, the other benefits

Answer explanation

During competition, both species vie for limited resources, leading to negative impacts on each other. This can result in reduced growth, reproduction, or survival for both, making 'Both species are negatively affected' the correct choice.

Tags

NGSS.MS-LS2-2

What is predation?

• When two species live together in a long-term association

• When a species (predator) hunts and eats another organism (prey)

• When species use the same limited resource

• When one species benefits and the other is unaffected

Answer explanation

Predation is defined as the interaction where a predator hunts and consumes another organism, known as prey. This distinguishes it from other ecological relationships, such as competition or commensalism.

Tags

NGSS.MS-LS2-2

NGSS.MS-LS2-3

Match the following types of interactions with their descriptions.

• Competition

• Positive-Neutral

• Commensalism

• Positive-Positive

• Parasitism

• Positive-Negative

• Mutualism

• Negative-Negative

Tags

NGSS.MS-LS2-2

What is the effect of overlapping niches in competition?

• It benefits both species.

• It harms both species.

• It benefits one species.

Answer explanation

Overlapping niches lead to increased competition for resources, which can harm both species involved. This competition can result in reduced survival and reproduction rates, making it detrimental for both.

Which interaction involves a long-term association between species?

• Competition

• Predation

• Symbiosis

• Migration

Answer explanation

Symbiosis involves a long-term association between species, often benefiting both parties. In contrast, competition and predation are typically short-term interactions, while migration refers to movement rather than a lasting relationship.

Which interaction involves both species benefiting?

• Competition

• Predation

• Mutualism

• Parasitism

Answer explanation

Mutualism is the interaction where both species benefit from the relationship, unlike competition, predation, and parasitism, which involve one species benefiting at the expense of the other.

Which interaction involves organisms using the same limited resources?

• Mutualism

• Competition

• Parasitism

• Commensalism

Answer explanation

Competition occurs when organisms vie for the same limited resources, such as food, water, or space. This interaction can lead to reduced availability of these resources for all competing organisms.

What is the effect of predation on the predator?

• + / +

• - / -

• + / 0

• + / -

Answer explanation

Predation benefits the predator (+) by providing food, while it negatively impacts the prey (-) by leading to its death. Thus, the relationship is + / -.

Tags

NGSS.MS-LS2-2