7th Grade ecology and Symbiosis Quiz

An organism's habitat provides everything it needs to:

• live 
• grow
• reproduce
• all of the above

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What does the arrow represent in a food web?

• It shows which animals live next to each other.
• The flow of water from one organism to another
• The flow of energy from one organism to another
• It shows how diseases are passed from one organism to another

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What is an abiotic factor?

• A nonliving thing that influences or affects an ecosystem
• Anything living or nonliving in an ecosystem
• A living thing that influences or affects an ecosystem
• A chemical compound in an ecosystem

What is a parasite in an ecosystem?

• An organism that creates its own food through photosynthesis
• An organism that is hunted for food
• An organism that hunts for food
• An organism that lives on/in another organism for survival

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What is a producer in an ecosystem?

• An organism that creates its own food through photosynthesis
• An organism that is hunted for food
• An organism that eats other organisms for survival
• An organism that lives on/in another organism for survival

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Remoras are small fish that attach to sharks but do not harm them. When sharks tear prey apart, remoras eat the leftovers. What statement about the relationship between remoras and sharks is true?

• Remoras and sharks have a predator-prey relationship.

• The relationship between remoras and sharks is an example of mutualism.

• The relationship between remoras and sharks is an example of parasitism.

• The relationship between remoras and sharks is an example of commensalism.

Which of the following is the term best describes the things in an environment that limit the growth of a population of organisms?

• Habitat
• Limiting Factor
• Predation
• Ecology

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Earth’s environments include both biotic and abiotic factors that living things need to survive. Large mangrove ecosystems are found along the coastlines in Florida. The figure shows a mangrove ecosystem that has both biotic and abiotic factors.

Which of the following are both abiotic factors in the mangrove ecosystem?

• A. water and pelican

• sun and rocks

• pelican and crab

• snail and water

A type of symbiotic relationship between individuals of different species in which both individuals benefit is called

• commensalism
• mutualism
• parasitism
• predator-prey

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What is the original source of almost all energy in most ecosystems?

• carbohydrates
• sunlight
• water
• carbon

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