PRACTICAL 6 Seed Plants (Gymnosperms and Angiosperms) OBJECTIVES: 1. To describe the features of seed plant life cycle and the concept of the dominant generation. 2. To describe the life histories and related reproductive structures of gymnosperms and angiosperms. 3. To summarize the features that distinguish gymnosperms and angiosperms. 4. To discuss the advantages of seed plants to dominate land and their evolutionary adaptations on land. EXPERIMENT 1: Gymnosperms INTRODUCTION: Gymnosperms
Premium Seed Plant Flower
What is Epidermolysis Bullosa? Epidermolysis Bullosa (EB) is the term used to describe a genetically-determined skin disorder. It is a group of blistering skin conditions where the skin is so fragile in people with EB that even minor rubbing may cause blistering. All forms of EB are genetic in origin and the genes responsible for most of the sub-types of the condition are now known. It is estimated that 2 to 4 out of every 100‚000 people‚ or up to 12‚000 people in the United States‚ have some form
Premium Skin
Moorpark College Neurophysiology of Nerve Impulses Laboratory Homework 20 Points Total Name: ___________________________________ PRINT THE FOLLOWING PAGES AND PROVIDE A HANDWRITTEN ANSWER TO ALL QUESTIONS. Answer the question in the space provided for each question. 1. In the PHYSIO-EX 9.0 Activity 1‚ the simulation showed you how the resting membrane potential depends on the concentration of K+ and Na+ in the ECF. Some data were generated while measuring the resting membrane potential
Premium Action potential Nerve
NAMES: __dantae____________________________________________ Histology Webquest 55 points 1. Go to : http://training.seer.cancer.gov/anatomy/cells_tissues_membranes/tissues/ a. Answer the following questions: (6 points) i. What fills the spaces between cells? A nonliving material‚ called the intercellular matrix‚ fills the spaces between the cells ii. What can be found in this material? The intercellular matrix may contain special substances such as salts and fibers that are unique
Premium Connective tissue Tissues Muscle
The first thing you see when you look at a person is their skin. It’s the largest organ of the body that’s made of epithelial tissue. It consists of two main layers‚ the epidermis and the dermis. As it’s the first thing in contact with the environment around us‚ it acts as a protective layer. Skin cancer is the rapid uncontrollable growth of abnormal skin cells that’s usually triggered by ultraviolet radiation. When skin cells with damaged DNA grow rapidly they form tumors. (Skin Cancer Foundation
Premium Skin Organ Squamous cell carcinoma
and burn area. Burns can cause tissue damage‚ electrolyte imbalance and organ system failure. There are several different depths of burns: First degree‚ Second degree‚ and Third degree. First degree burns (partial thickness injury) include the epidermis only. The affected skin is able to maintain water vapor and protect against bacteria. Local pain and erythema are present. Blisters appear after 24 hours of injury. The person may experience localized edema‚
Premium Infection Infectious disease Immune system
about our surroundings. It responds to every single touch‚ pressure‚ pain and even the changes in temperature. The skin consist of two layer tissues‚ the epidermis on the surface and the dermis underneath. These tissues in the skin of human body are made up of four‚ the epithelial tissue‚ muscle tissue‚ nervous tissue and connective tissue. Epidermis is epithelial tissue‚ it is the thin outer layer of the skin. Most of them are dead cells and these contains protein called keratin‚ it waterproofs and
Premium Skin
surfaces (such as the epidermis of the skin and the linings of respiratory‚ urinary‚ and digestive tracts) but also extends into all of the complex invaginations which form lungs‚ kidneys‚ sweat glands‚ digestive glands‚ liver‚ etc. Epithelial tissue provides the essential functions of protection; containment of body fluids; and transport in and out across body surfaces (absorption and secretion). Embryonically‚ most epithelial tissues are derived either from ectoderm (e.g.‚ epidermis) or endoderm (e
Premium Connective tissue Epithelium Collagen
ROOTS: 1. Epidermis – The outer layer of cells * Root Hair * An extension of an epidermal cell of a root that increases absorptive capacity of the root. * Absorptive unicellular extensions of epidermal cells of a root that functions as the major site of water and mineral uptake. * Increase surface area of root in contact with moist soil‚ increasing root’s absorptive capacity. 2. Cortex * Primary tissues of a root bound on the outside by the epidermis and on the
Premium Root Plant anatomy Phloem
The top layer (Epidermis) is super thin on some parts like your “eyelid” and thicker on “the bottom parts like your feet.” The Epidermis responsibility is to 1. Make sure that the skin reproduces new skin cells‚ 2. Make sure it gives the skin the color and 3. Makes sure its protecting your body. Secondly‚ the Dermis creates
Premium Squamous cell carcinoma