Ecological Interactions and Competitions

The video tutorial explains the concept of community interactions, where organisms in a community affect each other. It defines a community as a group of various species in a common location, such as a forest. Interactions can be positive, negative, or neutral and are classified into intra-specific (within the same species) and inter-specific (between different species) interactions. Examples include competition among chimps for fruit (intra-specific) and between grey and red squirrels for habitat (inter-specific). The video also provides a mnemonic to remember the difference between inter-specific and intra-specific interactions.

What is a community in ecological terms?

• A group of non-interacting species

• An interacting group of various species in a common location

• A collection of abiotic factors

• A single species living in isolation

Which of the following is NOT a type of interaction in a community?

• Positive

• Negative

• Neutral

• Static

What is intra-specific competition?

• Competition within the same species

• Cooperation between different species

• Competition between different species

• Cooperation within the same species

Which example illustrates intra-specific competition?

• A lion and a hyena competing for prey

• A tree and a shrub competing for sunlight

• Two male blackbirds fighting over a female

• Two different bird species fighting over territory

What defines inter-specific interactions?

• Interactions between abiotic factors

• Interactions between different species

• Interactions within a single organism

• Interactions within the same species

Which of the following is an example of inter-specific competition?

• Grey and red squirrels competing for habitat

• Chimps fighting over fruit

• A single species of plant competing for water

• Two male lions fighting over a pride

How has the grey squirrel affected the red squirrel population?

• By providing food

• By sharing habitat

• By pushing them out of their habitats

• By forming mutualistic relationships

What does the mnemonic 'international' help you remember?

• Intra-specific interactions

• Inter-specific interactions

• Abiotic interactions

• Symbiotic interactions

What does 'intranational' refer to in the context of ecological interactions?

• Interactions within one ecosystem

• Interactions between different ecosystems

• Interactions between different species

• Interactions within one species

Which type of interaction involves members of one species?

• Symbiotic

• Abiotic

• Intra-specific

• Inter-specific