AP Biology : Understanding Xylem and Phloem
Which best explains why angiosperms are the most diverse and successful plant Which statement best describes the difference between xylem and phloem?.and get get does
The information below was adapted from OpenStax Biology The structure of plant roots, stems, and leaves facilitates the transport of water, nutrients, and photosynthates throughout the plant. The phloem and xylem are the main tissues responsible for this movement. Water potential, evapotranspiration, and stomatal regulation influence how water and nutrients are transported in plants. To understand how these processes work, we must first understand the energetics of water potential.
Xylem is the complex, dead and permanent tissue responsible for carrying nutrients and water, whereas phloem is the soft and permanent tissue play its role in transporting the food and other organic material produced by the green parts especially leaves by the process of photosynthesis. Xylem and phloem are the two types of vascular tissues , present in plants and together constitute vascular bundles. Their function is to efficiently transport the materials which can be food, water, nutrients, organic materials, etc. Basis for Comparison Xylem Phloem Meaning Xylem is the complex tissue of plants, responsible for transporting water and other nutrients to the plants. Phloem is living tissue, responsible for transporting food and other organic materials.
Phloem and xylem are complex tissues that perform transportation of food and water in a plant. They are the vascular tissues of the plant and together form vascular bundles. They work together as a unit to bring about effective transportation of food, nutrients, minerals and water. Xylem is formed by tracheary elements like tracheids and vessels predominantly. There are a variety of other cells giving it the status of complex tissue.
Learners need to be able to examine and identify some plant tissues using microscopes, bio viewers, photomicrographs and posters. Learners need to be able to draw the cells that make up the various plant tissues, showing the specialised structures. Types of plant tissues:. Plant tissues picture:. Plants are typically made up of roots, stems and leaves. Plant tissues can be broadly categorised into dividing, meristematic tissue or non-dividing, permanent tissue.
Sugar Transport in Plants: Phloem