Interdependence of Organisms and Evolution

What type of interaction is observed when both organisms benefit from their relationship?

• Competition

• Mutualism

• Parasitism

• Predator-prey

Which factor does NOT directly affect individual organisms, populations, communities, and ecosystems?

• Planetary movements

• Climate

• Resource availability

• Human activity

What is the role of mathematical representations in the study of natural selection?

• To predict weather patterns

• To create simulations of ecosystems

• To calculate means and represent data

• To design new organisms

Which of the following is NOT a pattern of interaction observed in ecosystems?

• Mutualism

• Urbanization

• Predator-prey relationships

• Commensalism

How do diseases primarily affect ecosystems?

• By promoting mutualism

• By increasing biodiversity

• By affecting population sizes

• By enhancing resource availability

Match the following

• This is an organism that breaks down and gains nutrients from dead organisms.

• Predator

• This is an organism that relies on other organisms for its food and energy supply; heterotroph

• Consumer

• This is an animal that lives by preying on other animals.

• Parasite

• This is an organism that supplies matter and energy, also known as an autotroph.

• Decomposer

• This is an organism which feeds on, but usually does not kill, a larger organism

• Producer

All the living things in an ecosystem are the ​ (a)   factos. The nonliving things are ​ (b)   .

• biotic
• abiotic

Answer explanation

Bio = life

A = not

Match the following

• scavenger

• eats other animals

• herbivore

• eats both plants and animals

• decomposer

• gets nutrients from breaking down the remains of other organisms

• carnivore

• eats only dead, decaying organisms

• omnivore

• eats only plants

In ​ (a)   , one species harms another species to benefit themselves. For example, a flea bites a dog to get ​ (b)   . This leaves the ​ (c)   with itchy bite marks.

• parasitism
• food
• dog
• commensalism
• flea

Match the following

• Decomposer

• A consumer that eats both plants and animals

• Herbivores

• A consumer that eats only meat

• Omnivores

• A consumer that eats only producers/plants

• Carnivore

• A bacteria or fungus that breaks down dead plants and animals