the importance of macronutrients & micronutrients in plant.ppt
TRANSCRIPT
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Chapter 6 NutritionTurn to page 125
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Predict the effects of a defective digestive system on health
Take care of the digestive system for one’s well-being
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Would be unable to supply one or more of the necessary nutrients & this impairs the health of the body
Taking care of our digestive system involve:1.Avoiding habits that are harmful2.Practicing good (eating) habits
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1. Avoid taking too much junkfood- do not contain nutrients like proteins, vit/ minerals, but a high in salt, sugar, fat
2. Avoid lying down or bending within 2 hours of a meal– my cause heartburn
3. Avoiding eating too much and too fast as this my cause gastritis, indigestion, intestinal gas/flatus
4. Avoiding smoking, drinking too much alcohol & coffees- peptic ulcer
5. avoiding the overuse of laxatives
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1. Eat balanced diet2. Eat more fresh fruits, vegetables & whole
grain to increase dietary fibre3. Chew your food properly drink plenty of
water through water4. Maintain a healthy weight5. Regular exercise
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Chapter 6 NutritionTurn to page 126
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List elements required by plant Classify elements required by plant based
on the amount needed Relate the effects of macronutrients
deficiency with the function of macronutrients
Explain the function of each macronutrient in plants
State the function of micronutrients & effects of micronutrient deficiency in plant
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Green plant require inorganic substance to synthesise their own nutrients
What is inorganic substance? carbon dioxide, water & mineral nutrients
What is mineral nutrients? Are essential chemical elements required by plant to complete their life cycle & achieve optimal growth & development
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Mineral nutrients which are required can be divided into:
1.Macronutrients – elements which are needed in large amount
2.Micronutrients – elements which are required in small amounts
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Macronutrients: C, O, H, N, P, K, Ca, Mg and S
Micronutrients : B, Cu, Fe, Mn, Mo, Zn To determine which elements are required
for normal growth, plant seedlings are grown in a complete culture solution known as Knop’s solution
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calcium nitrate 0.8g potassium nitrate 0.3g magnesium sulfate 0.2g potassium dihydrogen phosphate 0.2g Ferum (llI) phosphate trace Distilled water 1000 cm3
We can investigate whether a plant needs a particular mineral element by eliminating it from knop’s solution
The absence of one or more of these nutrient can lead mineral difeciency
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Function: combine to form carbohydrates during photosynthesis
Deficiency effects- stunted growth (rarely happens)
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Function – synthesis of chlorophyll, proteins, hormones & nucleic acids
Deficiency effects-chlorosis (leaves turn yellow) and stunted growth
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Function – synthesis of proteins, nucleic acid & ATP, promotes cell division & maturation of plants & ripening of fruits.
Deficiency effects-leaves are dark green, plants mature slowly, fruits ripen slowly and stunted growth
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Function – synthesis of proteins and starch, promotes cell division & activate enzyme activity
Deficiency effects-leaves turn yellow & their edges become dry and stunted growth
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Function – formation of cell walls, help maintain the permeability of cell membranes, growth of the shoot tips & root tips.
Deficiency effects-the apical buds die, cells which are not uniform are formed and stunted growth
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Function – formation of chlorophyll & protoplasm of cells, activates enzyme
Deficiency effects-chlorosis, part of leaves / whole leaves die
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Function – formation of cytoplasm of cells, helps in the division & development of cells
Deficiency effects-chlorosis and stunted growth
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Function – synthesis of organic substances & helps in the decomposition of carbohydrate
Deficiency effects-growth of shoots & roots
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Function – involved in the metabolism of nitrogen
Deficiency effects-stunted growth
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Function – activates some enzymes Deficiency effects-spotted leaves and
stunted growth
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Function – activates some enzymes Deficiency effects-leaves have yellow
patches
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Function – Part of the enzyme system in respiration & photosynthesis
Deficiency effects-leaves turn yellow & growth is not normal
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Function – synthesis of chlorophyll & formation
Deficiency effects-leaves have yellow patches
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