Ecosystems
Food Webs
Food Chains
Classification
Dichotomous Keys
100

What do we call the living things in an ecosystem?

Biotic Factors 

100
Provide an example of a habitat

Any habitat 

100

Where does all energy from a food chain come from?

The Sun


100

Describe the difference between vertebrates and invertebrates 

Vertebrates have an endoskeleton and invertebrates have an exoskeleton 

100

What is the name of the tool that helps scientists identify organisms by asking a series of yes-or-no questions?

Dichotomous key

200

What down call the organisms that break down dead matter and recycle nutrients back into the ecosystem?

Decomposers 

200

Describe what a food web is.

Connection of different food chains in an ecosystem

200

Which group of consumers feeds directly on producers such as plants and algae?

Primary Consumers 

200

List 3 characteristics of living organisms  

Grow and develop 

Respire

Respond to changes in their environment

Reproduce themselves 

Produce and excrete waste 

Assimilate (take in and process substances) 

200

How many choices do you get at each step when using a dichotomous key?

Two

300

What process do green plants use to convert sunlight, carbon dioxide, and water into glucose and oxygen?

Photosynthesis

300

Describe how energy flow is represented in food webs.

Arrow points from prey to predator 

300

What type of animal eat both plants and animals?

Omnivore

300

List the 5 types of vertebrates 

Mammals, birds, reptiles, amphibians, fish

300

List 2 types of dichotomous keys 

Branched & tabular 

400

What are the four key characteristics required for a habitat?

1 food 

2 Shelter 

3 Water 

4 Same species so they can mate

400

If a tertiary consumer is removed from a food web, what could be the immediate effect on the populations of other organisms? Refer to each trophic level

Secondary consumer would increase, primary consumer would decrease, and producer would increase. 

400

What is another name for producers?

Autotrophs 

400

Rewrite this scientific name on your whiteboard 

Canis Familiaris

400

Is 'lives in the ocean' a suitable question for a dichotomous key 

NO

500

Provide an example of Biotic and Abiotic factors interacting in an ecosystem

  1. Sunlight (abiotic) affects plant growth (biotic) through photosynthesis.
  2. Temperature (abiotic) influences animal migration patterns (biotic).
  3. Soil type (abiotic) determines which plants (biotic) can take root and thrive.
  4. Rainfall (abiotic) affects the availability of freshwater (biotic needs) for animals.
  5. Wind (abiotic) disperses plant seeds or pollen (biotic) over distances.
  6. Oxygen levels in water (abiotic) affect the survival of fish (biotic).
  7. pH levels in soil (abiotic) impact the health of microorganisms and plants (biotic).
  8. Natural disasters like fire (abiotic) can reduce or reshape animal populations (biotic).
  9. Salinity of water (abiotic) determines which aquatic organisms (biotic) can live there.
  10. Light availability in aquatic ecosystems (abiotic) controls the depth at which algae (biotic) can photosynthesize.
500

Explain why energy availability decreases at higher trophic levels in a food web.

Only a small percentage of energy—about 10%—is transferred from one level to the next.

500

A food chain starts with seagrass, which is eaten by sea turtles, and sea turtles are eaten by tiger sharks. If human activity causes most of the seagrass to disappear, explain how this could affect both sea turtles and tiger sharks.

Both populations could decrease 

500

List the 7 levels of the Linnaeus Classification System.

Kingdom, Phylum, Class, Order, Family, Genus, Species

500

1a. Has feathers → go to 2
1b. Does not have feathers → go to 3

2a. Can fly → Pigeon
2b. Cannot fly → Penguin

3a. Has fur and four legs → Cat
3b. Has scales and no legs → Snake

Which animal would you identify if it has feathers but cannot fly?

Penguin 

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