EVERYDAY SCIENCE

Detailed explanation-1: -The plant world is conveniently separated into two major groups: nonvascular plants and vascular plants. The nonvascular plants include the bryophytes, while the vascular plants include the ferns, gymnosperms, and angiosperms (see Chapter 19).

Detailed explanation-2: -Plants are classified into two groups: nonvascular plants and vascular plants. Vascular plants are further divided into those that reproduce without seeds and those that reproduce with seeds. Seed plants are divided into those that produce seeds in cones and those that produce seeds in the ovaries of flowers.

Detailed explanation-3: -The vascular plants have two types of seed plants, including gymnosperms and angiosperms.

Detailed explanation-4: -Plants that have xylem-water-carrying tubes-and phloem-food-carrying tubes-are called vascular and are what you generally think of when you think of plants. Plants that do not have this transport system are called nonvascular and are small, simple plants such as mosses.

Detailed explanation-5: -Types of vascular plants: Angiosperms: Gymnosperms: Pteridophyte: