Question

the stem of a plant must elevate the flowers, fruits, and leaves of the plant so that the plant can receive enough sunlight to undergo photosynthesis. the cells in the stem of a plant often have thicker cell walls than the other parts of the plant in order to (1 point) provide support and strength to the stem. allow more light to penetrate through the stem secrete water and oxygen through the stem. increase gas exchange in the stem.

Explanation:

The stem needs to hold up the plant's parts. Thicker cell - walls provide the necessary support and strength to keep the stem upright and functional for elevating flowers, fruits, and leaves. Light penetration, secretion of water and oxygen, and gas exchange are not the main reasons for thicker cell - walls in the stem.

Answer:

provide support and strength to the stem.