How are plants grouped? Chapter 6 Lesson 3

nonvascular plant A plant without tubes to carry water and nutrients throughout the plant. p nonvascular plant

vascular plant A plant with tubes to carry nutrients and water throughout the plant.

xylem Vascular tissue that carries water and nutrients from roots to the other parts of a plant.

phloem Vascular tissue that carries food from leaves to the other parts of a plant.

gymnosperm A vascular plant that produces seeds that are not surrounded by fruit.

angiosperm A flowering plant whose seeds are surrounded by fruit

Nonvascular Plants Nonvascular plant don’t have true roots. Are anchored in the ground by small, rootlike structures. Have parts that look like stems, but they aren’t true stems.

Nonvascular Plants Have small, leaf-like structures that make food. But they aren’t true leaves because they don’t have veins. Don’t have any tissue for carrying materials throughout the plant. Absorb water and nutrients from their surroundings.

Nonvascular Plants Water in the plants carries food and nutrients from cell to cell. Because of this the plants can’t grow very tall.

Nonvascular plants

Vascular plants Have tissue that supports the plants and carries water and food. Roots, stems, and leaves all contain vascular tissue.

Vascular plants Two types of vascular tissue. Xylem-carries water and nutrients from roots to other parts of a plant. Phloem-carries food from leaves to the rest of the plant. Vascular plants come in all sizes.

Vascular Plants Duckweed can be less than an inch tall Redwood trees can be as much as 30 ft in diameter and over 250 ft. tall

Vascular Plants Xylem cells in the trunk of a tree transport water. Phloem cells, just under the bark, transport food. Each year, new layers of xylem and phloem cells grow. You can tell the age of a tree by counting the rings of xylem.

Vascular Plants

Seed-Bearing Plants Seeds enable plants to grow in many environments. Seed plants don’t need water for fertilization. The seeds of pines trees are protected only by a seed coat. A pine tree is a gymnosperm.

Seed-Bearing Plants Apple trees have flowers instead of cones. Flowers produce seeds inside fruit. A flowering plant, which has seeds protected by a fruit, an angiosperm.