Limitations in Ecosystems

A limited supply of food and shelter in the same habitat will lead to -

• mutualism
• parasitism
• competition
• environmental changes

Plants need light, water, and carbon dioxide for photosynthesis.  This is an example of an organism interacting with -

• biotic factors
• food webs
• abiotic factors
• dominant factors

Any relationship in which two different species use each other to live is called _________________.

• Predation

• Symbiosis

• Competition

• Harmony

True or False: The population size of predators are equal to the population size of prey.

• True

• False

When two or more individuals or populations attempt to obtain a single resource.

• Competitive interaction

• Mutually beneficial interaction

• Dependent interaction

• Predatory interaction

An interaction between organisms or species that is helpful to both.

• Dependent interaction

• Predatory interaction

• Mutually beneficial interaction

• Competitive interaction

What is an example of a predator–prey relationship?

• Bacteria and humans

• Fox and rabbit

• Tick and deer

• Lion and hyena

Which of these describes a mutually beneficial relationship between two organisms?

• A dog with worms in its intestine
• A turtle and a snail that both eat grass live in a river
• A honeybee pollinating a plant and receiving nectar for food
• A small fish attached to a shark, eating tiny pieces of the shark's food as it floats

Occurs when 2 or more organism use the same resource

• Competition
• Mutualism
• Commensalism
• Parasitism

How does a bird "change its environment" to meet its NEEDS?

• builds a nest
• flies around
• catches bugs
• looks for something to eat