quiz tomorrow on 3.3 only study workbook, textbook, vocab, notes
TRANSCRIPT
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Quiz tomorrow on 3.3 only
Study workbook, textbook, vocab, notes
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Trophic level pyramid
• When filling in your pyramid, in order to know which trophic level an organism goes in, you need to know WHAT the organism ate, all the way back down the food chain.
• Example 1: A bug eats some algae. The bug is a __________ consumer. (primary)
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Trophic level pyramid
• Example 2: A fish eats a bug that ate some algae. The fish is a ________________ consumer.
(secondary)
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Trophic level pyramid
• Example 3: A bird eats a fish that ate a bug that ate some algae. The bird is a ____________ consumer(tertiary)
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Trophic level pyramid
• Example 4: A bird eats a bug that ate some algae. The bird is a __________________ consumer.
(secondary)
•*Some animals can fill in more than 1 trophic level
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Trophic level pyramid
• Example 5: A bobcat eats a bird that ate a fish that ate a bug that ate some algae. The bobcat is a _________________ consumer.(quaternary)
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Review of 3.3
• What travels through a food chain or web?
• Energy (or biomass)
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Review of 3.3
• Where does the energy come from for all organisms in a food chain or web? In other words, what is the ultimate energy source for all life on Earth?
• Sunlight or chemical energy
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Review of 3.3
• What happens to energy as we move from step to step in a chain or web?
• It is transferred to the “eater”
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Review of 3.3
• In food chains and webs, what trophic level must you have more of than others?
• Primary producers
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Review of 3.3
• About how much energy is transferred up to each trophic level? For example, the primary producers yield 100% of the energy from the sun, but primary consumers only get about ______
• About 10%
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Review of 3.3
• What may happen if a species goes extinct?
• The populations that rely on that specie will also go extinct; the organisms preyed upon by the specie will flourish.
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Review of 3.3
• What is meant by “trophic levels”?
• Each step or level of a food chain/web/ pyramid
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Review of 3.3
• The 1st organism in a food chain must always be what type of organism?
• Primary producers
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Review of 3.3
• Name 2 food making processes
• Photosynthesis and chemosynthesis
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Review of 3.3
• Where do chemosynthetic bacteria get their energy?
• Chemical energy
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Review of 3.3• What are the 3 types of ecological pyramids
and what are they used for?
1. Pyramid of energy – illustrates relative amount of energy for each trophic level
2. Pyramid of biomass – illustrates relative amount of biomass contained in each trophic level
3. Pyramid of numbers – illustrates the relative NUMBER of organisms for each trophic level
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Review of 3.3
• Define herbivore
• Animal that eats only plants
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Review of 3.3
• Herbivores are also called _________________________ consumers
• Primary
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Review of 3.3
• What are animals called that feed on herbivores?
______________ consumers
• Secondary
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Review of 3.3
• _________________ consumers eat secondary consumers
• Tertiary
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Review of 3.3
• What organism feeds on dead plants and animals and helps recycle them?
• Decomposers
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Review of 3.3
• How is energy transferred once an organism dies? For example, when most plants die without being eaten, where does their energy go and how does it get there?
• The organism is broken down by decomposers, which allows primary producers to reuse the nutrients and energy that belonged to that organism. (Think Recycling!)
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Review 3.3
• Why are decomposers important?
They allow energy to be recycled from dead plants and animals. Instead of the energy being unused after an animal dies, decomposers break down decaying matter, forming detritus in the soil, which becomes nutrient-rich for new plants to grow.
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Review of 3.3
• A plant is …
A. An autotroph
B. A heterotroph
C. A primary producer
D. A and C
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Review of 3.3
• A person who eats a chicken that ate grain is a…
A. Primary producer
B. Primary consumer
C. Secondary consumer
D. Tertiary consumer
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Review of 3.3
• Primary consumers eat
A. Primary producers
B. Primary consumers
C. Secondary consumers
D. Quaternary consumers
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Review of 3.3
• A cow is a
A. Primary consumer
B. Heterotroph
C. An herbivore
D. All of the above
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Review of 3.3
• Autotrophs…
A. Make their own food
B. Are the base of the food chain
C. Are primary producers
D. All of the above
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Review of 3.3
• A lion that eats a zebra that ate grass is…
A. A primary producer
B. a primary consumer
C. a secondary consumer
D. a quaternary consumer
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Review of 3.3
• A heterotroph…
A. is an autotroph
B. eats other organisms
C. is a primary producer
D. A and C
E. None of the above
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Review of 3.3
• A detritivore
A. is an autotroph
B. eats decomposing matter
C. kills animals
D. all of the above
E. none of the above
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Review of 3.3
• If a person eats a vegetable, the person is acting as
A. A primary producer
B. A primary consumer
C. A secondary consumer
D. A tertiary consumer
E. A quaternary consumer
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Review of 3.3
• As nutritional energy passes through the food chain, energy…
A. Is lost
B. Is gained
C. Remains constant
D. Increases then decreases
E. Decreases then increases
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Review of 3.3
• There are more primary producers than there are…
A. Primary consumers
B. Secondary consumers
C. Tertiary consumers
D. Quaternary consumers
E. All of the above
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Review of 3.3
• The network of all the inter-related food chains in a biological community is called
A. A food web
B. A food chain
C. A food pyramid
D. A ecological experiment
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Review of 3.3
• The sequence of who eats whom in a biological community is called
A. A food web
B. A food pyramid
C. A food chain
D. A trophic level
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Review of 3.3
• An organism that gets its energy by eating other organisms is called
A. An autotroph
B. A primary producer
C. A heterotroph
D. A consumer
E. C and D