AP BIOLOGY

Detailed explanation-1: -Lacking support tissues, most bryophytes are only a few centimeters tall. They are anchored by tubular cells or filaments of cells, called rhizoids.

Detailed explanation-2: -These plants do not have true roots to absorb water, nor do they have vascular tissue to transport that water to other regions of the plant. Because of this, bryophytes tend to grow prostrate (close to the surface they are growing on) and stay quite small.

Detailed explanation-3: -Bryophytes (phylum Bryophyta) are plants that lack true vascular tissues and organs.

Detailed explanation-4: -They do not possess vascular tissues (xylem and phloem) that function in the conduction of food, water, and minerals. Due to the lack of vascular tissues, water and nutrients cannot be transported to long distances so they can not grow tall.

Detailed explanation-5: -Bryophytes lack the conventional vascular tissues which usually contain the substance lignin. Without vascular tissues, these plants have no means of transporting water and/or nutrients from their lower organs to the higher organs which explains their limited height.