Light
Limiting factor for photosynthesis. Varies with exposure, season, latitude. Measured in lux.
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Lesson overview
This lesson brings together the PDF, study notes and chapter flow so you can revise Climatic Factors without losing the thread.
Light
Limiting factor for photosynthesis. Varies with exposure, season, latitude. Measured in lux.
Temperature
Affects biochemical reactions (enzymes). Thermal tolerance zone: min, optimum, max.
Water and humidity
Essential for life. Organisms classified by water relation: xerophytes (dry), hygrophytes (wet), mesophytes (intermediate).
Ecological response curve
Represents an organism's tolerance to a factor. Ecological valence zone between minimum and maximum.
Observation 1 - Climatic Factors
Microscopic analysis.
Observation 2 - Climatic Factors
Microscopic analysis.
Observation 3 - Climatic Factors
Microscopic analysis.
Observation 4 - Climatic Factors
Microscopic analysis.
Observation 5 - Climatic Factors
Microscopic analysis.
Diagram 1 - Climatic Factors
Diagram description.
Diagram 2 - Climatic Factors
Diagram description.
Diagram 3 - Climatic Factors
Diagram description.
Diagram 4 - Climatic Factors
Diagram description.
Diagram 5 - Climatic Factors
Diagram description.
Experiment 1 - Climatic Factors
Results interpretation.
Experiment 2 - Climatic Factors
Results interpretation.
Experiment 3 - Climatic Factors
Results interpretation.
Experiment 4 - Climatic Factors
Results interpretation.
Experiment 5 - Climatic Factors
Results interpretation.
Solution 1 - Climatic Factors
Explanation.
Solution 2 - Climatic Factors
Explanation.
Solution 3 - Climatic Factors
Explanation.
Solution 4 - Climatic Factors
Explanation.
Solution 5 - Climatic Factors
Explanation.
Solution 6 - Climatic Factors
Explanation.
Solution 7 - Climatic Factors
Explanation.
Solution 8 - Climatic Factors
Explanation.
Solution 9 - Climatic Factors
Explanation.
Solution 10 - Climatic Factors
Explanation.
Observe → describe → explain
Start from facts (document/experiment), then build a reasoned scientific explanation.
Precise scientific vocabulary
Use exact terms: ecological factor, valence, productivity, biotope, biocenosis, reproduction.
Limiting factor
Growth/activity depends on the most constraining environmental factor.
Ecological valence
Wide valence = euryecious species; narrow valence = stenoecious species.