Ecological Relationships

Multiple Select

Which of the following are considered biotic factors in an ecosystem?

• Producer

• Rain

• Consumer

• Decomposer

Multiple Choice

Which of the following is an abiotic factor in an ecosystem?

• Rain

• Producer

• Consumer

• Decomposer

Multiple Choice

In the food chain shown, which organisms are secondary consumers?

• Grasshopper & Fox

• Fox & Owl

• Rat & Frog

• Rabbit & Frog

Open Ended

Explain what would happen to the food chain if the primary consumer was removed. Use organisms from the food chain.

Multiple Choice

Which of the following best describes the difference between a food chain and a food web?

• A food chain shows only one path of energy flow, while a food web shows many interconnected paths.

• A food chain includes only plants, while a food web includes only animals.

• A food chain is always longer than a food web.

• A food web shows only one organism at each level.

Fill in the Blanks

Multiple Choice

Using the food web, which organism has a producer-consumer relationship with the tree?

• Lion

• Grasshopper

• Rhino

• Deer

Multiple Select

Which of the following is an example of producer-consumer relationship in the given food web?

• Tree - Lion

• Grass - Mice

• Grass - Deer

• Mice - Fox

Multiple Choice

What is another example of a predator-prey relationship in the food web shown, besides Eagle-Snake?

• A: Eagle (predator) and mouse (prey)

• B: Mouse (predator) and grass (prey)

• C: Eagle (predator) and fox (prey)

• D: Snake (predator) and fox (prey)

Multiple Choice

In the context of food webs, what does the term 'prey' refer to?

• An organism that eats plants

• An organism that gets eaten by another

• An organism that produces its own food

• An organism that decomposes dead matter

Open Ended

Explain why the rhino and grasshopper are considered competitors in the food web.

Multiple Choice

What two other organisms are competitors?

• Snake and fox

• Fox and mouse

• Rhino and giraffe

• Eagle and lion

Open Ended

Describe what you think a symbiotic relationship is and how it differs from the other types of relationships discussed. (Think of the movie venom, the alien was a symbiote) Use the picture to guide your thinking.

Multiple Select

Which of the following are types of symbiosis?

• Mutualism

• Commensalism

• Parasitism

• Predation

Multiple Choice

Based on the explanation and examples provided, which of the following best describes mutualism?

• Both organisms benefit from the relationship.

• One organism benefits and the other is harmed.

• One organism benefits and the other is unaffected.

• Both organisms are harmed.

Multiple Choice

Why type of symbiotic relationship is shown in the picture?

• Mutualism

• Commensalism

Multiple Choice

Which of the following is an example of a symbiotic relationship between organisms?

• A bee pollinating a flower

• A lion hunting a zebra

• Two wolves fighting over territory

• A hawk eating a mouse

Multiple Choice

Barnacles create home sites by attaching themselves to whales. This relationship neither harms nor benefits the whales. 

• parasitism
• commensalism
• mutualism

Multiple Choice

Yucca flowers are pollinated by yucca moths. The moths lay their eggs in the flowers where the larvae hatch and eat some of the developing seeds. Both species benefit. 

• parasitism
• commensalism
• mutualism

Multiple Choice

Mistletoe extracts water and nutrients from a spruce tree. The spruce tree is harmed. 

• parasitism
• commensalism
• mutualism

Multiple Choice

 The stork uses it saw-like bill to cut up the dead animals it eats. As a result, the dead animal carcass is accessible to some bees for food and egg laying. The relationship neither harms nor benefits the stork.

• parasitism
• commensalism
• mutualism

Multiple Choice

Which of the following shows the symbiotic relationship between the Rodent and the Bird?

• Mutualism

• Commensalism

• Competition

Multiple Choice

Two male Giraffes are fighting over the last green leaf of a tree that is dying.  

• Competition
• Mutualsim
• Predation
• Commensalism

Multiple Choice

A relationship that occurs when two or more organisms of the same species need the same resource at the same time

• competition
• symbiosis
• predation

Multiple Choice

In a parasitic relationship, one organism is ___________ and one organism is benefiting. 

• helped
• harmed
• not effected
• happy

Multiple Choice

In a mutual relationship, both organisms are ________________. 

• hurt
• not effected
• harmed
• benefiting 

Multiple Choice

Commensalism is where one organism is benefiting and the other organism is _____________________. 

• not effected
• helped
• harmed
• hurt

Multiple Choice

1.  A bee and a flower work together to benefit each other. This is an example of _________________. The bee helps the flower by pollinating it and the flower helps the bee by providing it with nectar. 

• commensal relationship 
• parasitic relationship 
• mutual relationship 

Multiple Choice

A tick is a parasite to a horse. Which statement best describes the relationship between the tick and the horse? 

• a.  The tick helps the horse get food. 
• a.  The tick harms the horse by feeding on its blood. 
• a.  The horse harms the tick by feeding on its blood. 
• The tick does not affect the horse. 

Multiple Choice

Which is an example of commensalism?

• Two different kinds of organisms harming each other. 
• Two different kinds of organisms are neither helping nor harming each other. 
• One kind of organism is being helped, but the other one is not harmed or helped. 
• One kind of organism is being helped, but the other is harmed. 

Multiple Choice

Tapeworms live in the intestines of dogs and absorb nutrients from food the dog eats. Which best describes the outcome of this relationship?

• The dog and tapeworm both become ill. 
• The dog becomes ill, and the tapeworm benefits. 
• The tapeworm and dog helpe ach other survive. 
• The tapeworm helps the dog survive. 

Multiple Choice

A pilot fish usually follows behind sharks to pick up food scraps that they leave behind. The fish gets food and the shark is unaffected. This is an example of:

• Mutualism

• Commensalism

• Parasitism

• Decomposition

Multiple Choice

When predator numbers decrease, prey numbers ____________ because fewer of them are being consumed.

• decrease
• increase
• stay the same
• divide in half

Multiple Choice

A feeding relationship where one organism hunts and one is hunted, such as a Lynx hunting a snowshoe hare, is known as:

• Commensalism

• Decomposistion

• Mutualism

• Predation

Multiple Choice

Where does the energy start in this food chain?

• Plant
• Sun
• Deer
• Wolf

Multiple Choice

Marlin and his son, Nemo, are clownfish that live in a sea anemone. Clownfish benefit by receiving protection and shelter from the sea anemone. The clownfish, in return, scares away predators of the sea anemone and provides nutrients for the sea anemone through its excrement (waste). The symbiotic relationship between Nemo and the sea anemone is known as -

• parasitism

• commensalism

• predator-prey

• competition

• mutualism