Factors affecting plants Kim Lachler 2010 NCES 6 L 2.2.
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Transcript of Factors affecting plants Kim Lachler 2010 NCES 6 L 2.2.
![Page 1: Factors affecting plants Kim Lachler 2010 NCES 6 L 2.2.](https://reader034.fdocuments.us/reader034/viewer/2022050714/56649ef65503460f94c09599/html5/thumbnails/1.jpg)
Factors affecting plants
Kim Lachler
2010NCES 6 L 2.2
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Biotic vs. Abiotic
Biotic Living or once
living“Bio” – means
life Abiotic
Non living“A” – means
without
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Biotic
They can have a positive affect or negative affect.
What do you think are biotic factors that affect plants?
Some are: Insects Birds Animals Fungi (mushrooms)
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Insects Benefits
Help pollinate Examples:
Bees Butterflies
Provide nutrients: Example:
Fly for a venus fly trap
Provide protection: Example:
Lady bugs eat harmful insects
Harmful Eat the plant
Examples beatles
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Birds
Benefits Spread seeds
Example: Blue Jays
Rid harmful insects Example:
Woodpecker
Harmful Cause damage
Example: Woodpecker
Rid helpful insects Example:
Barn swallow
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Animals
Benefits: Spread seeds
Example: Squirrels
Fertilize Example:
Cows
Harmful: Causing damage
Examples: Humans Deer
Eating them Examples:
Humans Deer
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Fungi
Benefit: Provide nutrients
Example: Mushrooms
breaking down dead wood into soil.
Harmful: Weaken healthy
plants Example:
Artist fungi
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Abiotic
They also can have a positive affect or negative affect.
What do you think are abiotic factors that affect plants?
Some are: Water Air Sun light/Temperature Soil/nutrients
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Water
1) Necessary for photosynthesis
2) Helps provide support
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Air
1) Carbon dioxide need for photosynthesis
2) Oxygen for respiration
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Sunlight/Temperature
Sunlight
1) Need for photosynthesis
Temperature
1) Affects absorption
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Soil
1) Provides the necessary nutrients (minerals) to aid in overall health and chemical reactions.
2) Gives the roots support
3) Where the roots absorbs water
4) pH affects adaptations
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pH
The concentration of hydrogen ions in a solution
Acidic Low pH A high hydrogen ion concentration.
Base High pH A low hydrogen ion concentration.
Neutral In the middle.
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pH continue
0 1 2 3 4 5 6 7 8 9 10 11 12 13 14
BaseAcidNeutral
batt
ery
acid
oran
ge ju
ice/
soda
coff
ee
purif
ied
wat
er
baki
ng s
oda
soap
y w
ater
drai
n cl
eane
r
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Some coping mechanisms
• Plants are not able to pick up and move
if conditions are not favorable.
• Plants can change the direction they are growing.
Examples: Phototropism - plants grow towards light
Gravitropism - plants grow upward
Thigmotropism – responding to touch
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Coping mechanisms continued
• A temporary state of minimal activity or inactivity.• Usually as a response to poor growing conditions.
Examples: Winter dormancy - Deciduous trees loosing their leaves in
the fall.
Intense heat dormancy -Grass stop growing and conserve energy until conditions are better.
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Bibliography
Plant Tropic Responses http://plantsinmotion.bio.indiana.edu/plantmotion/movements/tropism/tropisms.html accessed 6/1/10
Decelles, Paul, The pH Scale http://staff.jccc.net/pdecell/chemistry/phscale.html accessed 6/1/10
Iannotti, Maria, Dormancy - What Does it Mean When a Plant Goes Dormant? http://gardening.about.com/od/seasonalgardening/g/Dormancy.htm accessed 6/1/10
The Mysterious Venus’ Flytrap http://www.botany.org/bsa/misc/carn.html accessed 6/1/10
Woodpecker http://en.wikipedia.org/wiki/Woodpecker accessed 6/1/10
Davis, Mark, Artist’s Fungi http://groups.google.com/group/backyard-nature/web/artists-fungi-ganoderma-applanatum accessed 6/1/10
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