Multiple choice Which of the following parenchyma cells protect plants from infection and drying out? Palisade parenchyma Spongy parenchyma Secretory parenchyma Epidermal parenchyma Storage parenchyma Reveal answer Fill a bubble to check yourself D Correct answer Explanation Epidermal parenchyma cells constitute the protective layer of epidermis, which protect plants from infection and drying out.