Download Plant Organs: Leaves, Roots, and Stems - Their Functions and Anatomy and more Slides Botany and Agronomy in PDF only on Docsity! Leaves, Roots, Stems Plant organs and their functions Docsity.com Leaves Docsity.com Photosythesis • The purpose of photosynthesis is to produce organic (carbon-based) molecules (such as sugars). • The plants use these molecules for two purposes: • As an energy source • As building material Docsity.com The mesophyl in this leaf is what kind of tissue? 1 2 3 33% 33%33% 1. Dermal 2. Ground 3. Vascular Docsity.com • On your own paper, list plant leaves or products of plant leaves that you have used in the past few days. • What qualities of the leaves made them useful? W O R K T O G E T H E R Docsity.com Root Anatomy • Parts of a root: • Root cap • Root meristem • Zone of elongation • Zone of maturation Docsity.com Roots: Epidermis • Root epidermis lacks a cuticle, and is porous. Usually has many root hairs. • Water enters through membranes of epidermal cells or through spaces between cells. Docsity.com Roots: Cortex • The cortex layer is made up of parenchyma cells. What is the main function of these cells? • Endodermis separates the cortex from the vascular cylinder. Docsity.com The vascular cylinder of a root contains mostly what kind of tissue? 1 2 3 33% 33%33% 1. Dermal 2. Ground 3. Vascular Docsity.com If a tap root is thick and contains a lot of starchy parenchyma cells, what is a function of that root? 1 2 3 4 25% 25%25%25% 1. Reproduction 2. Food storage 3. Photosynthesis 4. Support Docsity.com • On your own paper, list any roots that you have used in the past few days. • What qualities of the roots made them useful? W O R K T O G E T H E R Docsity.com Stems: Cortex and Pith • Cortex layer contains parenchyma cells and vascular bundles. • Pith makes up the center of the stem, and is absent in hollow stems. Docsity.com Stems: vascular tissue • Vascular bundles are in the cortex. • Between the xylem and phloem is the vascular cambium, a meristem layer. What is it for? Docsity.com Stems: Secondary growth • Secondary growth is seen in woody plants. • This kind of growth produces stronger, thicker stems from the vascular cambium and cork cambium. Docsity.com Wood is made up of what tissue? 1 2 3 33% 33%33% 1. Dermal 2. Ground 3. Vascular Docsity.com Stems that contain lots of vascular tissue are primarily for: 1 2 3 4 25% 25%25%25% 1. Food storage 2. Absorbing water 3. Transporting materials 4. Protecting the plant Docsity.com • On your own paper, list any stems or products of stems you have used in the last few days. • What qualities of these stems made them useful? W O R K T O G E T H E R Docsity.com
