Introduction
Scientists estimate that there are more than 300,000 different species of plants on Earth. These plants are very diverse. Take a moment to reflect on some of the weird plants you know about. Did you think of the Venus Flytrap, that digests insects? What about the Touch-Me-Not, which will fold up its leaves to get away from you if you touch it? Did you remember the Corpse Flower, whose large blossom smells like rotting flesh? [include photos and caption of all 3 types of plants] The truth is that plants have a unique ability to adapt to their surroundings. No matter how different plants may appear, they all have the same basic systems and structures. This chapter will examine the way plants work, and the different structures they use to grow and reproduce. Once we understand the plant parts, we will examine some of the ways plant parts work together to support life in the plant. Finally, we will also examine the way plants are classified, and identify plants based on their characteristics.
Plant Structure
Just like all animals have organs that make their bodies work, all plants have structures to carry out their life functions. Like the organs in animals, plant parts are composed of specialized tissues. Tissues combine to make up the basic plant parts. In plants, there are three main types of tissue, shown in Figure XX. These tissues function to give the plant its shape and provide structure. The three types of tissue are: epidermal tissue, ground tissue, and vascular tissue.
Epidermal tissue is the outside covering of a plant. It works just like the skin of an animal to protect internal parts. Because keeping water inside is so important to plants, one of the biggest functions of the epidermal tissue ...
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...ray flowers only are dandelions, chicory, and endive. Disk flowers are wider, flat flowers with large stigmas. Some plants that have disk only composite flowers are thistles and burdock. Combination flowers have ray flowers on the edges and disc flowers in the center. Any flower that has an “eye” like sunflowers, daisies, chrysanthemums, or asters is considered a combination composite flower.
Plant Classification
In- Text Features
Science: Cohesion & Adhesion in Vascular Tissues
Water and nutrients move up the xylem through the scientific principle of cohesion. Cohesion works to (expand this and find a graphic)
Technology: Hydroponics
Explain then ask some critical thinking questions for discussion
Mathematics: Root Surface Area
What Part is My Food?
Pop out explaining the modifications to roots (tubers) stems (corms, etc) and leaves that become food stuffs
Dermal Tissue System The dermal tissue system consist of epidermis and periderm whose cells contain protoplasm and nucleus without intercellular spaces. The dermal tissue system is theprotective outer layer for the whole part of plant. It acts like human skin which forms the first line of defence against physical damage and pathogen.A single tissue called epidermis, is a layer of tightly packed cell usually found in non-woody plant or herbaceous plants. The epidermis forms a protective cover in plant
The functions of rhizoids are root-like structures that absorb water and transport materials to the plants. The position of the archegonium and antheridium relates to their reproductive function by having the archegonium located under the eggs so that when the antheridium sperm is dispersed, it can reach the egg better. Antheridium is upright so that the sperm can be dispersed on top and reach the archegonium egg to fertilize the plant. They are also located near each other so that when there is
need in order to maintain homeostasis. Homeostasis is the maintenance of internal environment of your body. Everything in your body, from cells to tissues and organs, all need the nutrition to function. There’re more functions that the nutrients help with. For example, metabolism of amino acids, glucose, fat and proteins, growth and repair of tissues and cells, and many can prevent blood clotting. The five nutrients are carbohydrates, protein, lipids, vitamins and minerals. The essential nutrients
Parts of a Plant Learning Objectives Students will be able to identify and describe the different parts of a plants. Students will be able to describe the different function of the plant as well. Lesson Plan Estimated Time: This project is an minimal of an hour and ten minutes long and an maximum of an hour and twenty-five minutes, which thus can be broken into a two day lesson. Materials: Markers Scissors Pencils Construction paper Pipe cleaners Glue sticks Colorful tissue paper.. Leaf
of plant from the family of Solanaceae. There are many tomato species around the world. The tomato is not easy to plant in Malaysia and it is also very important as a food for the citizen. This tomato plant is easy to cultivate in area which is in moderate temperature and firstly came from the place which is in dry west coast of tropical South America (Cooper, 1972). According to Picken, Stewart, and Klapwijk (1986), there are several techniques for growing tomato plant which is first plant the
Organelles Organelles are subunits that allow a cell to function correctly and efficiently. The name comes from organ as these subunits act like organs to cells in the same way that organs are for us. Most organelles in eukaryotic cells and some in prokaryotic cells are membrane bound and protected by a membrane or in some cases a wall. Universal organelles While most of the main organelles making up the nucleus grouping are present in all organelles, the ‘group’ is not membrane bound in prokaryotic
through different species. All animals and plants are multicellular, but the earth is also made up of single-celled organisms, which are mostly bacteria. Once taking a sample from Specimen A we found that it was a multicellular heterotroph that lacks a cell wall. Heterotroph’s are not able to make their own food and they must get it some other way, generally from eating other organisms or by finding dead material to eat. Digestion, circulation, barrier function, and sexual reproduction are some of the
Animals and plants each require their own unique form of carbohydrates, fats, and protein to function. Humans have many chemical compounds found in the body, each classified as different macromolecules. Macromolecules include fats, carbohydrates, lipids, and nucleotides. Each performing their own unique function in the human body. Carbohydrates, or carbs, are used to spare the use of protein in the body and use it as energy. Carbs can be found in many foods, such as grains, fruits and milk products
Plant hormones are specialized chemical substances produced by plants. They are the main internal factors controlling growth and development. Hormones are produced in one part of a plant and transported to others, where they are effective in very small amounts. Depending on the target tissue, a given hormone may have different effects. Plant hormones play an integral role in controlling the growth and development of plants. A plant hormone is generally described as an organic compound synthesized
Intro -The concept of the gene has been the focus of some hundred years of work to establish the basis of heredity, however there is no simple one line answer to the question what exactly is a gene. Genes have a variety of different functions a gene is a sequence of dna that carries information representing a protein. The sequence of dna can be identified as a continuous stretch stretch of nucleotides and chromosomes. Genes are made up of dna and act as instructions to make the molecule called proteins
are chewed and turned into smaller pieces. The second stage is the chemical breakdown, where the digestive enzymes chemically break down large molecules to simple molecules. If the food has a large surface area to volume ratio the digestive enzymes function more efficiently. When large chunks of food are broken down by the teeth, they expose a larger surface area which the chemicals can act on. The volume of the food is still the same as before but the surface area to volume ratio is overall increased
important for plant growth. These are also called essential elements and required for the plant to complete its life cycle. Nutrients are important for growth and development of crop, promotes vegetative and reproductive growth, provides protection against many devastating pathogens that is responsible for the yield loss in many economically important crop. Sixteen important nutrients are vital for plant growth. These are 1. Macronutrients: These nutrients are required in higher amounts for plant growth
Their number, structure and shape depend on the type of tissue composed of cells. Most mitochondria present in the cell tissue with high activity, for example. Muscle. This is due to the fact that the mitochondria processes of cellular respiration of oxygen, which are the source of energy for cells. Mitochondrion is surrounded by two membranes:
metabolic fuel. Waxes also serve a diversity of other functions related to their water-repellent properties and their firm consistency. Certain skin glands of vertebrates secrete waxes to protect hair and skin and keep it pliable, lubricated, and waterproof. Birds, particularly waterfowl, secrete waxes from their preen glands to keep their feathers water-repellent. The shiny leaves of holly, rhododendrons, poison ivy, and many tropical plants are coated with a thick layer of waxes, which prevents
ABSTRACT Catalase is an enzyme found in both plant and animal tissue. It catalyses the breakdown of hydrogen peroxide into water and oxygen. The main aim of the investigation was to find out if temperature has a long term effect on the rate of catalase activity in plant tissue. Plant tissue was left at room temperature, boiled or frozen and then grinded to a paste. It was then centrifuged and supernatant was tested with hydrogen peroxide solution. The calculation r=1/t was used to determine the