It is because leaves are the main users of photosynthesis in a plant. The sunlight seeps into the leaves, and the leaves transform the sunlight's energy into sugar; their food.
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<h2>Answer</h2><h3>A. Kingdom, phylum, class, order</h3><h2>Explanation:</h2>
The taxonomic groups are basically used in the scientific classification from most general to most specific. There are seven main taxonomic levels such as kingdom, phylum or division, class, order, family, genus, species. The most specific classification is genus and species. The broadest classifications are by domain and kingdom.
The carbon that plants need for photosynthesis comes from (carbon dioxide gas in the atmosphere)