The effect of nutrient deficiency and toxicity in plants Nutrient Micronutrient Nitrogen (N) Deficiency effect Toxicity effect Leaves become dark green and susceptible to drought‚ pests and diseases as well as failed yield for fruits and seed crops. Limit the uptake of other nutrient‚ which is magnesium or potassium. Older leaves at the bottom of plant will start to become yellowish (chlorosis) while the rest of the plant’s leaves will be light green. Calcium (Ca) Newer leaves at the top of the
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The antifeedant activity of the extracts choice and no-choice test methods‚ after 24 and 48 hours in each test‚ against 7 day old (3rd instar) larvae of S. litura on castor leaves. Stock solutions of the test compounds were prepared in the carrier solvents. Further dilution was done in emulsified water by maintaining emulsifier (Tween – 80) level at 0.5 % to yield various concentrations. Castor leaf discs (4 cm diameter) were punched out from the washed and dried castor leaves. Leaf discs were dipped
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OSMOSIS IN POTATO TISSUES Vanessa Tsao‚ Lovette To‚ Wang Yeyun‚ Zhang Shenjia‚ Alicia Mak Class 101‚ Nanyang Girls’ High School‚ 2 Linden Drive‚ Singapore 288683 ABSTRACT In this project‚ the relationship between the concentration of salt solution and the length of the potato strip that was immersed in it was investigated. Five strips of potato of the same length were placed in different Petri dishes that contained water of different salt concentration. They were left for twenty minutes and the length
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Chloe Lindbom Regeneration of a Planarian Over Time Erin Davis Biology Mrs. Werfelman 5th Hour 10/09/2014 10/20/2014 Background: The planarian‚ also known as the flatworm‚ is a creature that live all over land‚ oceans‚ and freshwater. (Biggs‚ A.‚ Gregg‚ K.‚ Hagins‚ W.‚ Kapicka‚ C.‚ Lundgren‚ L.‚ Rillero‚ P.‚ 2002) The planarian has a threebranched digestive cavity. (Alvarado‚ 2004) Planaria range from 1/8 to 1 inch. (Alvarado‚ 2004) The planarian can be cut into many pieces and each piece will grow
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TITLE: Toxicity Testing and Determining the LC50 INTRODUCTION: Our main objective for this experiment was to determine which three chemicals were going to be the most toxic to the brine shrimp by adding drops of vinegar‚ bleach and ammonia to the controlled water. We found that the vinegar was the most effective and the quickest. The ending results were very interesting when being compared to our hypothesis and we learned that some chemicals can react faster than others and each contains a different
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3DIFUSSION IN AGAR CUBES – LAB REPORT Research Question: What is the effect of surface area on volume ratio on the rate of diffusion of pigment from the agar cube measured by percentage volume of diffusion over time? Background Research: Diffusion is the passive movement of molecules or particles along a concentration gradient‚ or from high to low concentration regions. Essential towards living organism’s functions‚ as it describes how the nerve cells are able to communicate with each other‚ through
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Acid into Different Sizes of Agar Blocks Aim: Investigating the relationship between the diffusion and the surface area to volume ratio‚ with agar and hydrochloric acid. Research Question: How does the difference in surface area to volume ratio affect the diffusion? Hypothesis: As the area to volume ratio increases‚ the time taken for a complete diffusion will also increase. Background Information: Agar is a jelly like substance and in this experiment‚ agar will be used is containing
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Nutrient | Nutrient Source | Importance/Function | Solubility | Deficiency | In Abundance | Vitamin A | Liver ‚cod liver oil‚ carrots‚ spinach‚ sweet potatoes‚ peaches and cantaloupe. | * Growth and maintenance of epithelial tissue including the cornea‚ membranes of gastrointestinal tract and skin. * Nerve formation and function | Fat Soluble | In children‚ growth retardation‚ and impaired bone formation. Fetal malformations. | Fetal malformations | Vitamin B2 | Beef‚ liver‚ lean meat
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Nutrient Amount Consumed DRI Goal Percent Purpose/Effect of Nutrient’s Consumption Foods to Consume More of to Meet DRI Goal Carbohydrates (g) 194.80 351.97 55% Carbohydrates add bulk to feces‚ prevent constipation‚ hemorrhoids‚ and diverticulitis‚ and reduce the risk of colon cancer and obesity. They also improve blood glucose regulation. A deficiency of carbohydrates can lead to hypoglycemia‚ ketosis‚ and weight gain. Honey‚ potatoes‚ white rice‚ raisins Dietary Fiber (g) 12.42 35.84 35% Dietary
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Activity 2.2.2: Anna Garcia – Nutrient Analysis Food Groups Target Average Eaten Status Grains 6 ounce(s) 9 ounce(s) Over Whole Grains ≥ 3 ounce(s) 1 ounce(s) Under Refined Grains ≤ 3 ounce(s) 8 ounce(s) Over Vegetables 2½ cup(s) 2¾ cup(s) OK Dark Green 1½ cup(s)/week 0 cup(s) Under Red & Orange 5½ cup(s)/week 1½ cup(s) Under Beans & Peas 1½ cup(s)/week 0 cup(s) Under Starchy 5 cup(s)/week ½ cup(s) Under Other 4 cup(s)/week ¾ cup(s) Under Fruits 1½ cup(s) ½ cup(s)
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