Plant physiology

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  • Ap Biology Lab

    The stomatal density of young and old leaves has not significantly different densities. The age of the leaf does not аffect and do not correlate with stomatal density. Because, when the leaf is a baby leaf it makes all the stomata and as leaf growth it just pulls apart from each other. Stomata has an essential rоle in all plаnts. Stomata helps to maintain balance between water and gas exchanges. The word stomatа come from Greek and meаns opening. The structurе оf the stоmata cоnsists оf the guard cеlls аnd thеre is оpening betwееn them. Thеse opеnings оpen and closе in responsе to ecological and envirоnmental changes, thus helping to a plant maintain a balance between water lоsses and it is оxygen requirements: (Evert, Eichhorn and Raven). Materials and Methods: At least one of each young and old leaves of holly were collected from a single plant. After, a table on a data sheet was prepared in order to record data. There were ten microscopic fields of view from each leaf and two sets of data A and B. A stands for old leaves and B stands for young leaves. Next, the leaf was cleaned from a dust and a small area of the leaf was painted with a thin layer of clear nail polish. When the nail polish is completely dried, an approximately 1-2 cm clear cellophane tape was obtained. To create a sort of handle, 1/3 of the tape was folded and stuck the cellophane tape to the middle. The sticky end of the tape was adhered to nail polish on the leaf. Then by using the tape handle, the nail…

    Words: 774 - Pages: 4
  • Water Tension In Xylem Channels

    that trees transport water through continuous chains of water molecules in the xylem, which are pulled upward by an increase in tension at the top of each column caused by evaporation in leaves (Tyree et al. 2003). As such, trees reach a height limit in which the tension is too great for water to be pulled from the column. With increasing height, trees must allocate their energy and resources efficiently to maximize photosynthetic capability in the face of water stress, by closing its leaves’…

    Words: 1677 - Pages: 7
  • Quiet Eye Gaze Behavior

    Quiet eye is a gaze behavior first reported by Joan Vickers of Calgary University in 1996. The Quiet eye has been defined as the duration of the final fixation towards the relevant target prior to the execution of the critical phase of movement and has been accepted as a measure of optimal visual attentional control. The quiet eye has an onset that occurs before the final movement in the motor task and an onset that occurs when the fixation deviates off the target by more than 3 degrees for…

    Words: 1335 - Pages: 6
  • Dr David Malin Case Study

    with more than 25 years experience in biochemistry and physiology. He started off at the Stirling University in Scotland studying physiology and computing from 1978 to 1981. Finishing his degree David went on to train with dressage coach and rider Judy Harvey a fellow of the British Horse Society (FBHS) and Federation Equestre Internationale (FEI) International dressage judge. Continuing David then went on to do a PhD on exercise physiology at the University of Loughborough,1989, which is the…

    Words: 1061 - Pages: 4
  • Case Study Of Congestive Heart Failure

    A 94 year old female was admitted to the hospital with occurring symptoms of swelling (edema) in the both of the lower legs, shortness of breath (dyspnoea) and recent weight gain due to Congestive heart failure (CHF). CHF is a condition in which the heart is unable to pump sufficient blood to meet the metabolic needs of the body (Figueroa & Peters, 2016). The result of inadequate cardiac output (CO) is poor organ perfusion and vascular congestion in the pulmonary (left-sided failure) and…

    Words: 994 - Pages: 4
  • Cardiac Physiology Case Study However, often when the patient sees that there isn’t a tense atmosphere, things become easier. Having exceptional verbal skills doesn’t only mean that you are sophisticated when talking or easy to understand, it also conveys the message that you can be an easy person to talk to and in this case particularly be comfortable enough to discuss the health/cardiac issues.…

    Words: 2075 - Pages: 9
  • Short Term Effects Of Media Exposure

    Media exposure can cause short term and long term effects. Short term effects are immediate and occur during the timeframe of exposure to the form of media. These short term effects can affect thought processes, beliefs, evaluative judgements, attitude, emotions, behavior, and physiological responses. (Potter 2014) Cognitive processes may be effected by supplying information and implementing new ideas. An example of a short term cognitive effect would be learning the outcome of a sports game or…

    Words: 1080 - Pages: 4
  • Animal Body Temperature Analysis

    Enzymes speed up the rates of most biochemical reactions by helping reactants interact with each other. Since enzymes are highly specific for a specific reaction, they only catalyze one or a few types of reaction. One of important enzymes in human body and many other animals is amylase that hydrolyzes starch, a major part of human diet for many people in the world. There is a variety of amylase produced from many sources in our body such as salivary glands in the mouth, pancreas cells, and small…

    Words: 824 - Pages: 4
  • How Does Chlorophyll Affect Plant Growth

    Introduction: Once a plant begins growth, it depends on multiple abiotic factors to continue growing: light, carbon dioxide and water. These three factors affect the growth rate of a plant, causing it to grow quicker or slower. Furthermore, altering these factors may stunt plants growth or improve it. For example, plants require an adequate amount of water to survive. Water hydrates the plant and also breaks down the minerals in the soil. As the plant absorbs the water, nutrients are transported…

    Words: 1038 - Pages: 5
  • Animal And People Mind Analysis

    This course gave me a broader introduction into the differences between animals and their physiology. Some of the animals discussed include elephants, large fish, and giraffes. These animals were selected due to of their large size which allows them to be studied easily. One of the differences we studied was blood pressure in these animals. For example, blood pressure in an elephant’s leg is higher than the blood pressure in a human due to the relative size of the elephant and the distance…

    Words: 2303 - Pages: 10
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