What makes plants grow? Several people have puzzle
This essay What makes plants grow? Several people have puzzle has a total of 1281 words and 7 pages.
What makes plants grow? Several people have puzzled over this question. There is no one single answer to this. Several factors contribute: Tropisms, environment, hormones, biological clocks, and even humans. We are trying to determine the effects of music on plants. It takes all these combined to have a plant that actually grows and a plant that is healthy and happy in its habitat.
Hormones contribute greatly to the growth of plants. Hormones such as auxins, gibberellins, cytokinins, and inhibitors make plants start growing through stimulation, have protein synthesis, maintain growth, and also inhibit plant growth, respectively. Hormones, very simply, control the plant’s instincts to grow.
Auxins accumulate in certain parts of the plant, for example the
stems grow toward the light. Auxins also make roots grow and make the veins in leaves grow. Tropisms, which are discussed later, in conjunction with auxins, make the plant grow in the proper direction.
Gibberellins are the leaves and roots that form in the baby plant seed. Gibberellins are also responsible for protein synthesis, which is the building of protein for basic life purposes. Gibberellins are used commercially to promote flowering and fruit development because of their growth stimulation.
Cytokinins are a group of natural plant chemicals found in endosperms, the nutritive tissue of embryonic seeds, and in the development of fruit. The cytokinin zeatin, in conjunction with auxins, stimulates cell division, particularly for shoot growth. Cytokinins also maintain cell growth, differentiation, and division.
Inhibitors are hormones that inhibit plant growth. Some inhibitors make the plant leaves fall off in the Autumn. Other inhibitors prevent the formation of buds in cold seasons. Ethylene makes fruit ripen which inhibits certain plants from maturing fully.
All plants need a fitting place to call home. This place is called its environment. Everyone knows that plants need suitable climate, water, and sunlight for photosynthesis in their environment.
In certain plants, shade is needed for proper growth but some light
is still needed. The length of the periods of light a plant receives also affects its growth and flourishment. Photosynthesis occurs using the suns energy to create the plants own energy. Long-day plants blossom only during the long periods of sunlight. Short-day plants bloom when the dark period is long. There are other types called day-neutral which are not affected by the duration of light.
All plants need different amounts of water. Some plants need lots of water, like the and when they grow in the wild they grow in the tropical regions of the Earth where there is an abundance of rain water. Plants like the Cacti grow only in the desert regions of the Earth where there is little rain. The pathos ivy requires only a medium amount of water.
The other factor is the climate. Again, the cacti needs a warm climate like the desert. The evergreen plant like firs normally grow in the tiaga regions of the Earth. The pathos ivy grows in temperate regions of the Earth. Climate is an important factor when determining plant growth.
In botany the orientation or directed movement of plants in response to an external stimulus is called a tropism. Tropisms are classified according to the nature of the stimulus: a response to light is called phototropism; a response to gravity is called a gravitropism which used to be called a geotropism.
A phototropism is a response to light so there must be a pigment
present to absorb the light. The effective light is normally from the blue region of the spectrum. The significance of phototropism to the plant is to assist in making the plant grow toward the light that it requires.
Growth movements in response to gravity are called gravitropism. Roots are gravitropic, growing in the direction of the Earth\'s gravitational field. Primary roots are more positively gravitropic than secondary roots. Shoots are negatively gravitropic, growing away from the gravitational field.
Gravitropisms are caused by different auxin concentrations, with more auxins collecting on the lower side of the shoots or roots. How higher concentrations on the lower sides of both shoots and roots produce opposite effects are not clear.
Biological clocks, physiological systems that enables organisms to live in harmony with the rhythms of nature, trigger certain cells and hormones that are crucial in the growth and development if plants. These clocks aren\'t perfect though they are necessary
Topics Related to What makes plants grow? Several people have puzzle
Essays Related to What makes plants grow? Several people have puzzle
ENST / 302ENST / 302 March 5, 1999 Harry Greene, “Frogs and Snakes: The Texture of Diversity” The lecture that was given by Dr. Greene proved to be well worth attending. He focused on snakes and frogs primarily and his in-depth knowledge of biology in the field proved to be very helpful in explaining the evolution, reproduction, and behavior patterns in these creatures. Also, throughout his lecture he touched on important concepts concerning biodiversity, humans, and extinction. He mentioned a quote that
The Veterinary Profession The Veterinary Profession When the first man set foot on this earth he longed for companionship. He wanted some one to keep him company, help him hunt and most of all, be a friend. Since that first step, when man domesticated animals, pets have been a growing part of many people’s lives. It is estimated that over seventy-eight percent of Americans have some type of pet, ranging from a common dog to an exotic snake, sharing their home with them (Barns 1). Just like humans, animals get sick and n
My girlfriend called me from Dallas the other day. My girlfriend called me from Dallas the other day. You have got to hear about the dream I had last night, she said. Since this was not a normal reason to call me, I was more than a bit interested to listen to her. The dream went like this, she explained. I came to visit you at college. You showed me around, introduced me to your friends, and showed me a great time. Basically, we never left each others side. I felt so happy. Unfortunately, when I woke up, I realized that it was all a dream,
What is Darwin's Theory?What is Darwin\'s Theory? Many scientists have different understandings and uses of bioengineering. Darwin\'s Theory on natural selection has stirred up some controversies on whether or not to remain studying and researching for information on the theory. Jeremy Rifkin, a philosopher and environmental activist, portrays in his article the world will be coming to an end if we remain to use bioengineering the way that we have been. He feels it is a waste of time and money to keep researching on Da
Dr. Brenda J. LittleDr. Brenda J. Little Dr. Brenda J. Little of the Naval Research Laboratory Stennis Space Center is the recipient of the 1995 Women in Science and Engineering Award. This award recognizes specific or special scientific or technical contributions by a woman scientist in the Federal service and specific contributions made by a woman scientist toward encouraging young girls and women to pursue science or engineering careers, or enhance employment, promotional or development opportunities for women s
Charles DarwinCharles Darwin In 1859 when Charles Darwin published his book The Origin of Species, it caused much controversy between the scientific and religious worlds. It caused many people to question their belief in the teaching of the Bible. The strongly held belief that the Bible was the literal truth clashed with the Darwin theory. Some people rejected and scorned Darwin while others tried to reevaluate their beliefs. Darwin theorized that species evolved from other species. The belief that God dire
Abuse of the InnocentAbuse of the Innocent Is it right to force a mouse to live it\'s live in a laboratory cage to test anti-cancer drug? How would you like to be squeezed in a cage with many other animals, not being able to touch the grass, run around and play, smell the flowers, or go for a walk in the warmth of the sunshine? Animal cruelty is wrong because we are hurting the Innocent. Animals experience and feel pain, fear , anxiety, stress, depression, boredom, joy and happiness. Animals are very intelligent, so
ATTACKS ON THE INSANITY DEFENSE ATTACKS ON THE INSANITY DEFENSE The insanity defense refers to that branch of the concept of insanity which defines the extent to which men accused of crimes may be relieved of criminal responsibility by virtue of mental disease. The terms of such a defense are to be found in the instructions presented by the trial judge to the jury at the close of a case. These instructions can be drawn from any of several rules used in the determination of mental illness. The final determination of mental ill
Ricky MedinaRicky Medina Intro. to Biology Report # 3 Twenty-six Israeli suicidal patients, twenty-four non-suicidal patients and twenty-four control aptients completed tests on different suicidal tendencies. Suicidal adolescents showed more negative responses that did either the non-suicidal adolescents or the control patients. Furthermore compared to the other two groups, the suicidal adolescents showed less complex self-attributes and a higher tendency to have a low self-esteem. Results were discussed an
To What Extent Does Acid Precipitation Affect AnneTo What Extent Does Acid Precipitation Affect Annelids? In order to truly understand acid rain and it\'s eventual effect on earthworms, it would be best to look at the causes of acid rain. How and why does altered acidity in precipitation have a devastating effect? Acid rain is charecterized as Precipitation that has a pH lower than about 5.0 (Allaby, Michael (1994) Ecology, Oxford Press,). Acid rain is created by many things, of which pollution from cars contributes the most. Ever since the I
Animal BehaviorAnimal Behavior Biology lb Abstract Animal behavior is predictable. Their behavioral tendencies are influenced by the relationship of its anatomy to their environment. By observing various forms of life, and associating the mechanism of their abilities to perform a behavioral action, evolutionary influence thereafter, can be analyzed and deduced from that point. Introduction The science and study of animal behavior involve an enormous array of complicated factors. For instance, stereotyped respo
Johnson Behavioral System (JBS) ModelJohnson Behavioral System (JBS) Model In this paper, I am going to summarize the Johnson Behavioral System (JBS) Model (Johnson, 1980, 1990), explain the perspectives for nursing practice, and explore its applicability in nursing practice. First, I am going to talk a little about Dorothy E. Johnson the nurse that wrote the Model. Dorothy E. Johnson was born August 21, 1919, in Savannah, Georgia (Lobo, 1995). She received her A.A. from Armstrong Junior College in Savannah, Georgia, in 1938; her B
The BrainThe Brain Your brain has two sides. And each has a distinctly different way of looking at the world. Do you realize that in order for you to read this article, the two sides of your brain must do completely different things? The more we integrate those two sides, the more integrated we become as people. Integration not only increases our ability to solve problems more creatively, but to control physical maladies such as epilepsy and migranes, replace certain damaged brain functions and even lear
CancerCancer Introduction According to Mollet, cancer is the second leading cause of death in the United States. Estimates for 1982 indicate that 430,000 Americans will have died of some form of cancer. If national trends continue, some fifty-three million Americans now alive will contract cancer sometime during their lifetime. Of this inverse number, approximately one-half will die of cancer despite a medical effort to cure and prevent cancer (300). Although 45 percent of the detected cases of seriou
CarbohydratesCarbohydrates INTRODUCTION A theme that we have seen and studied in this class is that a particular form or structure of a molecule plays a significant role in the function of that molecule. Since we are interested in the function of molecules. it helps to study their structure. One of the major classes of organic compounds found in cells are carbohydrates. These carbohydrate are made of carbon, hydrogen, and oxygen in a ratio of 1:2:1 respectively with a general formula of X(CH2O)n. When the ca
Title of Paper : Theory of EvolutionTitle of Paper : Theory of Evolution Grade Received on Report : 87 TABLE OF CONTENTS Page INTRODUCTION ............................................... 2 DARWINIAN THEORY OF EVOLUTION .............................. 4 THE THEORY OF BIOLOGICAL EVOLUTION: CONTRIBUTING ELEMENTS ....................... 7 WALLACE\'S CONTRIBUTIONS ................................... 13 HARDY-WEINBERG PRINCIPLE .................................. 15 COMPARISON: LAMARCK vs. DARWIN ........................... 16 DARWIN\'S I
The Theory of EvolutionThe Theory of Evolution The theory of evolution, as set forth by Charles Darwin in 1859, stated that all plant and animal life evolved over long periods of time from simple to more complicated forms through mutation and adaptation. He also taught that only the fittest of each species would survive. He further postulated that the first living cell evolved in a warm warm little pond and that it took billions of years for the present diversity of living things to evolve. At the time, it was thoug
Genetic Engineering, history and futureGenetic Engineering, history and future Altering the Face of Science Science is a creature that continues to evolve at a much higher rate than the beings that gave it birth. The transformation time from tree-shrew, to ape, to human far exceeds the time from analytical engine, to calculator, to computer. But science, in the past, has always remained distant. It has allowed for advances in production, transportation, and even entertainment, but never in history will science be able to so deeply af
MARINE BIOLOGISTSMARINE BIOLOGISTS Perhaps one of the most important administrations in the world is the Nation Oceanic and Atmospheric Administration, more commonly referred to as the NOAA. It was established in 1970. There are 400 officers in the program and over 12,000 employees. This organization helps the career of Marine Biology and promotes its well being. Welcome to the wonderful world of Marine Biology. Marine Biology starts when there is pollution in the water and then they take samples of the water an