Plants without specialized conducting tissues are called non-vascular plants. These plants lack the xylem and phloem that vascular plants use to transport water and nutrients throughout their bodies.

Here are some key characteristics of non-vascular plants:

* Small size: They are typically small and low-growing because they rely on diffusion to move water and nutrients, which is a slow process.

* Moist environments: They need to live in moist environments to absorb water directly through their surfaces.

* Simple structure: They lack roots, stems, and leaves as we know them. Instead, they have simpler structures like rhizoids (root-like structures) and thalli (flattened, undifferentiated bodies).

Examples of non-vascular plants include:

* Mosses: Common in damp forests and on rocks.

* Liverworts: Found in moist, shaded areas.

* Hornworts: Often growing in muddy soil.

While non-vascular plants lack specialized conducting tissues, they are still incredibly important to the environment. They play a role in soil formation, help retain moisture, and provide habitats for small animals.