C3 vs C4 Plants: Leaf Anatomy — NEET Biology
📚 Practice ConceptBy looking at which internal structure of a plant you can tell whether a plant is C₃ or C₄? Explain.
Which of the following statements correctly illustrate the application or principles of Blackman’s Law of Limiting Factors in photosynthesis? S1: If the light intensity is significantly below saturation, an increase in atmospheric CO₂ concentration will lead to a proportional increase in the rate of photosynthesis. S2: The phenomenon where the rate of photosynthesis eventually plateaus despite continuous increases in light intensity exemplifies Blackman's Law. S3: For C₃ plants, increasing temperature beyond their optimum (20-25°C) will always enhance photosynthesis if CO₂ levels are kept high. S4: In conditions of severe water scarcity, providing optimal light and CO₂ will not significantly increase photosynthesis, as water availability becomes the primary limiting factor. S5: Blackman’s Law is only applicable to external environmental factors and does not account for internal plant factors like chlorophyll content.
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