Plant have ________ while animals lack it.
Correct answer: B. cellulose
- A. starch
- B. cellulose
- C. protein
- D. fat
Explanation
Plant cell walls contain cellulose, a structural polysaccharide that animals generally cannot digest or produce as a cell-wall material. Plants also contain starch, proteins and fats, so cellulose is the distinguishing option here.
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