Food Chains and Food Webs Quiz

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Questions and Answers

What do food chains show?

Feeding relationships between organisms and the flow of energy through an ecosystem.

What is the first part of a food chain?

Primary consumer

Secondary consumer

Tertiary consumer

Producer (correct)

What are autotrophs?

Organisms that can photosynthesize.

What type of organism is a grasshopper considered?

Herbivore Signup and view all the answers

What happens to energy as it moves up the trophic levels?

Energy is lost at each trophic level. Signup and view all the answers

What is a top carnivore?

The animal at the end of the food chain Signup and view all the answers

Detritivores and decomposers feed on living organisms.

False Signup and view all the answers

In the food web example provided, what eats a cricket?

Lizard, cat, kingfisher. Signup and view all the answers

What is the primary consumer in the food chain involving grass?

Cow. Signup and view all the answers

Energy is lost at each ______ level.

trophic Signup and view all the answers

What is the producer in the river food chain?

Duckweed. Signup and view all the answers

What might happen to the population of seals if the population of algae increases?

It would likely increase. Signup and view all the answers

How many levels do food chains usually have?

4 or 5 Signup and view all the answers

What happens to the population of flat winkles if the crab population suddenly decreases?

It would increase. Signup and view all the answers

The energy in a food chain comes primarily from the ______.

sun Signup and view all the answers

Match the following terms with their definitions:

Producer = Organisms that make their own food via photosynthesis Primary consumer = Organism that eats the producer Carnivore = Organism that eats animals Herbivore = Organism that eats plants Signup and view all the answers

What is energy transferred in measures of?

Joules (J). Signup and view all the answers

The secondary consumer comes before the primary consumer in a food chain.

False Signup and view all the answers

How is energy lost in a food chain?

Through movement, reproduction, excretion, and consumption of non-edible parts. Signup and view all the answers

Study Notes

Food Chains

Food chains illustrate feeding relationships and energy flow within an ecosystem.
Arrows in a food chain depict energy transfer between organisms.
Food chains begin with autotrophs (e.g., plants, algae, seaweed).
Autotrophs utilize sunlight to produce their food through photosynthesis.
Autotrophs are also called producers.
Other organisms in a food chain are heterotrophs, consuming other organisms for energy.
These heterotrophs are called consumers.
Primary consumers (first-order) feed on producers.
Secondary, tertiary, and sometimes quaternary consumers follow, each feeding on the organism before it in the chain.
The top carnivore in a food chain is the animal at the end of the chain.

Food Webs

Food chains are simplistic; food webs offer a more comprehensive view.
Animals often consume multiple organisms.
Food webs show interconnections among multiple food chains.
Seasonal availability of food and nutrient requirements affect organism diets.

Energy Transfer in Food Chains

Energy is transferred between trophic levels (e.g. producer, primary, secondary consumers).
Only a small percentage (around 10%) of energy is transferred between trophic levels.
Energy is 'lost' through various processes like movement, reproduction, and heat production.
Organisms may not completely digest all parts of consumed organisms (e.g. bone, feathers).
Other energy is lost from the food chain through wastes like feces and urine.
Decomposers contribute to energy cycling, processing remaining organism matter.

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Description

Test your knowledge on the intricate relationships within food chains and food webs. Understand how energy flows through ecosystems and the roles of producers and consumers. This quiz covers key concepts and interconnections in ecological feeding relationships.