Which of the following have unevenly thickened primary walls that support young, growing parts of the plant?
A) parenchyma cells
B) collenchyma cells
C) sclerenchyma cells
D) tracheids and vessel elements
E) sieve-tube elements

Question

Quizplus · Accepted Answer

Collenchyma cells have unevenly thickened primary walls that provide flexible support for young, growing parts of the plant. Parenchyma cells have thin primary walls and play a variety of roles in the plant, such as storage and photosynthesis. Sclerenchyma cells have thick secondary walls with lignin and provide rigid support for mature parts of the plant. Tracheids and vessel elements are specialized cells involved in water transport in the xylem. Sieve-tube elements are specialized cells involved in sugar transport in the phloem.

Which of the Following Have Unevenly Thickened Primary Walls That