10 difference between xylem and phloem

Food and water are essential for all living things including plants. In human beings, the food and water that is taken in are absorbed, transported and utilized by different sets of complex systems that work together like the digestive system and the circulatory system. However, in the case of plants, a simple singular unit, called the vascular system, is responsible for the transportation of water, nutrients and minerals to all parts of the plant. The vascular system consists of two tissues, named xylem and phloem, each with its own functions and responsibilities. In this article, we will look at the key differences between these two tissues of the vascular system, that is, the xylem and phloem. What is Xylem? Xylem is a plant vascular tissue that transports water, along with the minerals dissolved in it from the roots to all other parts of the plant. Here the key things you need to know about xylem: Structure and Properties of Xylem • Xylem has special water-conducting cells called tracheary elements or tracheid cells. These cells are long in shape and are tapered at the ends, thus forming long tube-like structures that allow the movement of water through them quickly. • Another important cell that Xylem has is called Parenchyma. These cells are responsible for the storage and metabolism-related activities of the xylem. • Xylem also has fibre cells that help in providing structural support to the plant. • Since water is absorbed from the roots and then taken upwards to a...

Plant transport tissues - Xylem and phloem Xylem The xylem is a tissue which transports water and minerals from the roots up the plant stem and into the leaves. Xylem consists of dead cells. The cells that make up the xylem are adapted to their function: • They lose their end walls so the xylem forms a continuous, hollow tube. • They become strengthened by a substance called lignin . Lignin gives strength and support to the plant. We call lignified cells wood. Transport in the xylem is a physical process. It does not require energy. Phloem The phloem moves food substances that the plant has produced by photosynthesis to where they are needed for processes such as: • growing parts of the plant for immediate use • storage organs such as bulbs and tubers • developing seeds Transport in the phloem is therefore both up and down the stem. Sucrose is the transport sugar in the phloem. Transport of substances in the phloem is called translocation . Translocation requires energy as it is an active process. Phloem consists of living cells. The cells that make up the phloem are adapted to their function: • Sieve tubes - specialised for transport and have no nuclei . Each sieve tube has a perforated end so its cytoplasm connects one cell to the next. Sucrose and amino acids are translocated within the living cytoplasm of the sieve tubes. • Companion cells - transport of substances in the phloem requires energy. One or more companion cells attached to each sieve tube provide this energ...

Answer: Xylem is Passive where Phloem is Active Explanation: Xylem carries water from roots to leaves, and is made up of dead cells. The cell walls are thick and made of lignin. Phloem carries food from leaves to growing parts and storage organs. This is made up of living cells. The cell walls are thin and made of cellulose. Explanation: Receptor-mediated endocytosis is a targeted version of endocytosis where receptor proteins in the plasma membrane ensure only specific, targeted substances are brought into the cell. Further Explanation: In bulk transport, molecules cross the plasma membrane in small vesicles that bud off from the membrane. Endocytosis is a type of active transport that moves particles, such as large molecules, parts of cells, and even whole cells, into a cell. There are different variations of endocytosis, but all share a common characteristic: the plasma membrane of the cell invaginates, forming a pocket around the target particle. The pocket pinches off, resulting in the particle being contained in a newly created intracellular vesicle formed from the plasma membrane. Cells perform three main types of endocytosis. • Phagocytosis is the process by which cells ingest large particles, including other cells, by enclosing the particles in an extension of the cell membrane and budding off a new vesicle. • During pinocytosis, cells take in molecules such as water from the extracellular fluid. The membrane invaginates, pinching off into tiny vesicles. • Finally...

Learning Objectives • Describe features, functions, and composition of plant organs, tissues, and cell types • Relate morphology (roots, shoots, leaves, tissue systems, cell types) to function • Differentiate monocot and eudicot body plan characteristics • Recognize relationships between embryonic structures and mature plant morphology Plant body organization Like animals, plants are multicellular eukaryotes whose bodies are composed of organs, tissues, and cells with highly specialized functions. The relationships between plant organs, tissues, and cell types are illustrated below. The stems and leaves together make up the shoot system. Each organ (roots, stems, and leaves) include all three tissue types (ground, vascular, and dermal). Different cell types comprise each tissue type, and the structure of each cell type influences the function of the tissue it comprises. We will go through each of the organs, tissues, and cell types in greater detail below. Plant Organ Systems The text below was adapted from Vascular plants have two distinct organ systems: a shoot system, and a root system. The shoot system consists stems, leaves, and the reproductive parts of the plant (flowers and fruits). The shoot system generally grows above ground, where it absorbs the light needed for photosynthesis. The root system, which supports the plants and absorbs water and minerals, is usually underground. The organ systems of a typical plant are illustrated below. The shoot system of a plant...

Both the xylem and phloem are complex permanent tissues. But they perform different roles in plants. The xylem facilitates the transportation of water from roots to the other part of the plant. Whereas the phloem aids the translocation of photosynthesized food material from the source to the other part . Content: Xylem Vs Phloem • • • • • • Comparison Chart 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. Contains Dead cells (parenchyma is the only living cells present in the xylem). Mainly contains living cells (fibers are the only dead cells in the phloem). Comprises of Xylem vessels, fibre and tracheids. Phloem fibers, sieve tubes, sieve cells, phloem parenchyma and companion cells. Found Xylem is located in the centre of the vascular bundle, deep in the plant. Phloem is located on the outer side of the vascular bundle. Kind of movement Unidirectional. Bidirectional. Role Xylem transports only minerals and waters from the roots. Phloem transports food materials that are prepared by the green parts of the plants to other parts of the plant. Provide mechanical support. Does not provide mechanical support. Other features Xylem is the dead tissues at maturity, but no cell contents. Phloem is the living tissue, but not with the nucleus. Xylem often constitutes the bulk of the plant body. ...

• Biology • Substance Exchange • Phloem Phloem Phloem is a specialised living tissue that transports amino acids and sugars from the leaves (source) to the growing parts of the plant (sink) in a process called translocation. This process is bi-directional.A source is a plant region that generates organic compounds, such as amino acids and sugars. Examples of sources are green leaves and tubers.A sink is a region of the… Phloem • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • A source is a plant region that generates organic compounds, such as amino acids and sugars. Exa...