biotic and abiotic factors
TRANSCRIPT
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Biotic and Abiotic Factors
•Biotic factors: Parts of
an ecosystem that are
living or used to be
living
•Abiotic factors: Parts
of an ecosystem that
have never been living
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Learn Biology: Ecosystem Definition & Biotic Factors vs. Abiotic Factors
• https://www.youtube.com/watch?v=y-wpbhnom70
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•Name and describe the ecological levels from smallest to largest.
•Use and define the following terms: geographic,climate, abiotic, biotic
RECAP
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Individual: biotic
Population: same type, 1 species in a geographic
area), biotic
Community: all the populations in a geographic
area, biotic
Ecosystem: community and the physical (abiotic)
environment, example – African Savannah
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Community: all the populations in a geographic
area, biotic
Ecosystem: community (biotic) and the physical
(abiotic) environment, example – African Savannah
Biome: general type of environment made up of
ecosystems, example – grasslands
Biosphere: all the biomes on the earth
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Amoeba Sisters Video: Biological Levels in Biology:
The World Tour
https://www.youtube.com/watch?v=EtWknf1gzKo
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(Biological Levels – Amoeba Sisters)Biological Levels: Amoeba Sisters Video Clip
Name:____________________________________
Period:_______ Date:_______________
1. Biological levels are analyzed. Explain the meaning of analyzed: ____________________
_______________________________________________________________________.
2. Biological Levels → 1st _____________________ (____________________________,
____________________________, ____________________________)
→ 2nd ______________________ (example would be the _______________)
→ 3rd _____________________ (example would be _______________)
→ 4th _____________________ (such as the _______________)
→ 5th _____________________ → 6th _____________________
→ 7th _____________________.→ 8th _____________________
→ 9th _____________________ → 10th _____________________
3. Communities are composed of ____________________ ___________________ and are
affected by __________________ __________________.
4. Temperature, rocks, and _______________ are abiotic factors.
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Chapter 25, section 1
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Meerkat Video
Scorpions: eaten by meerkats
1. Hard exoskeleton: outer “shell” made of chitin(protein – known in biology as a macromolecule) that gives them structure and protection (the function)
2. Exoskeleton: prevents desiccation (loss of water)
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https://www.youtube.com/watch?v=i9tkAa7vcZo https://www.youtube.com/watch?v=A6-8pC8o5fw
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Fowler’s Toad
1. Specialist: unique or specific habitat needs
2. Habitat requirement(s): sandy soil
3. Where found: river floodplains
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Virginia Pine
1.Habitat requirement(s): sandy soils, indicator species
2.Where found: river floodplains
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Prickly Pear Cacti1.Habitat
requirement(s): lots of sun, dry, warm, well-drained soil
2.Where found: south facing steep slopes (cliff sides)
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Five Lined Skink and Northern Fence Lizard
1. Reptiles: scales (folds in skin)
2. Legs: horizontal, extend sideways
3. Habitat requirements: lots of sun, dry, warm, well-drained soil
4. Where found: south facing steep slopes (cliff sides)
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Snowshoe Hare
1.Habitat requirement(s): preferred plant foods, higher terrain/elevation
2.Where found: top of plateau
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Habitat•specific environment in which an organism lives
•provides an organism with resources—anything an organism needs to survive and reproduce - including food, shelter, and mates.
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Tolerance
limits and conditions within which an organism can exist
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Tolerance
•limits and conditions within which an organism can exist
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Video: Teachers Pet – Ecological Levels/Ecological Factors, Habitats/Niches…
https://www.youtube.com/watch?v=GlnFylwdYH4&t=10s
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Video Recap: Teachers Pet – Ecological Levels/Ecological Factors, Habitats/Niches…
1. What is ecology?
2. Name 5 levels of ecological organization – from largest to smallest.
3. Explain the difference between the terms ecosystem and community.
4. Explain the difference between the terms community and a population.
5. Define the meaning of biotic and abiotic.
6. Explain the meaning of habitat and niche.
7. What is the difference between a generalist and specialist?
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Video Recap: Teachers Pet – Ecological Levels/Ecological Factors, Habitats/Niches…
1. Ecology: _________________________________________
2. 5 levels of ecological organization: _______________, _______________, _______________, _______________, _______________
3. Difference between the terms ecosystem and community: __________________________________________________________________________________________________
4. Difference between the terms community and a population: __________________________________________________________________________________________________
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Video Recap: Teachers Pet – Ecological Levels/Ecological Factors, Habitats/Niches…
5. biotic: ____________ abiotic: ____________
6. habitat: __________________________________
niche: ___________________________________
7. Difference between a generalist and specialist: __________________________________________________________________________________________________________
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