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(D) The rate of photosynthesis is influenced by light quality (wavelength) and temperature.$1$. Light Quality: Photosynthesis is most efficient in red

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$Z$ slowest,$Y$ fastest

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(D) The rate of photosynthesis is influenced by light quality (wavelength) and temperature.$1$. Light Quality: Photosynthesis is most efficient in red and blue light and least efficient in green light,as chlorophyll reflects green light.$2$. Temperature: According to the $Q_{10}$ effect (often related to Van't Hoff's law),the rate of enzymatic reactions like photosynthesis generally increases with temperature up to an optimum point (around $30^{\circ}C$ to $35^{\circ}C$).- Plant $X$ is at $10^{\circ}C$ in daylight (white light,which contains red and blue wavelengths).- Plant $Y$ is at $20^{\circ}C$ in red light (highly effective for photosynthesis).- Plant $Z$ is at $30^{\circ}C$ in green light (least effective for photosynthesis).Comparing these,plant $Z$ will photosynthesize the slowest because green light is poorly absorbed by chlorophyll,despite the higher temperature. Plant $Y$ will photosynthesize the fastest because it is exposed to red light at a favorable temperature $(20^{\circ}C)$. Therefore,$Z$ is slowest and $Y$ is fastest.

The diagram below shows three plants with identical leaf surface areas. Assuming all other conditions were identical for all three plants,which of the plants would likely photosynthesize slowest,and which fastest?

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