• Plant Cell
    Cells contain a nucleus, a cytoplasm and subcellular organelles and they are enclosed in a membrane that defines their boundaries. In the Hydrilla leaf, observed under the microscope, Cells were so distinct that the outline and the rectangular shape of the cells were clearly seen. Individual...
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  • Aaaasass
    is increased in the presence of: (A) Thyroxin (B) Rennin (C) Insulin (D) Adrenalin (iv) The specific function of light energy in the process of photosynthesis is to: (A) Reduce carbon dioxide (B) Synthesise glucose (C) Activate chlorophyll (D) Split water (v) Which one of the following helps the eye to...
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  • Biology
    Light Intensity 1. Light is important as an energy source for photosynthesis in green plants. All other animals depend on the food synthesised by the green plants. 2. Light intensity influences the rate of photosynthesis. Hence, the distribution of green plants is denser in areas of high light...
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  • Essay
    |A student is able to: |Prepare and study slides to compare the epidermal cells of onion or cell of Hydrilla leaf | | |18/1/10 |Understanding cell |Draw and label an animal cell |which cheek...
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  • Revision Exercise Form 4 Biology
    6 Nutrition 1. Autotrophs are organisms that can synthesise its own food from inorganic substances. 2. Two types of autotrophic nutrition are photosynthesis and chemosynthesis. 3. All heterotrophs depend on other plants and animals as a source of food. 4. Heterotrophic nutrition can be divided into...
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  • dfgh
    chloroplasts. 38] Out of the following which one is needed to demonstrate that 'Light is essential for photosynthesis'? [Marks:1] A. A germinating plant B. A variegated leaf C. A hydrilla twig kept inside a beaker containing water D. A healthy destarched potted plant 39] Figures A, B...
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  • Papers
    chloroplasts. 38] Out of the following which one is needed to demonstrate that 'Light is essential for photosynthesis'? [Marks:1] A. A germinating plant B. A variegated leaf C. A hydrilla twig kept inside a beaker containing water D. A healthy destarched potted plant 39] Figures A, B...
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  • STUDENT OBJECTIVES
    Specificity of Enzymes 7. Bioenergetics 7.1 Bioenergetics 6.4.1 6.4.2 6.4.3 Photosynthesis 7.1.1 7.1.2 7.2.1 7.2.2 7.2.3 7.2.4 7.2.5 7.2.6 7.3 Factors Affecting Rate of Photosynthesis Latest Revision June 2012 A * describe the specificity of different enzymes...
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  • Perfect Score Bio Answer
    cover the water. 1 1 1 1 11 PERFECT SCORE BIOLOGY 2011 P5: block out the light for plants growing beneath them. 1 P6: Photosynthesis rate reduced 1 P7: Dissolve oxygen also reduced 1 P8: Plant on the top of water and beneath water eventually die. P9: Their remains...
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  • Notes
    down a potential gradient. Symplastic movement may be aided by cytoplasmic streaming. You may have observed cytoplasmic streaming in cells of the Hydrilla leaf; the movement of chloroplast due to streaming is easily visible. Most of the water flow in the roots occurs via the apoplast since the cortical...
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  • Compost
    algae – the water loving and other nitrogen-fixing organism found in compost. They have chlorophyll which is vital to soil purification through photosynthesis. This plant form can handle large amounts of water, in addition to its other benefits. Microfauna contribute on a large scale, to the formation...
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  • Paper
    and leaves, which may affect total dry matter production and yield. Cr also causes deleterious effects on plant physiological processes such as photosynthesis, water relations and mineral nutrition. Metabolic alterations by Cr exposure have also been described in plants either by a direct effect on enzymes...
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  • Environment Studies
    of overpopulation on natural resources include soils being damaged and forests being rapidly depleted, thus affecting natural processes such as photosynthesis, the nitrogen cycle, and a constant food source. In addition, the depletion of water resources and extensive contribution to CO2 build-up in the...
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  • Science
    groundnut oil are the fats obtained from plants. Ans 13 : Edible part of onion- underground stem (bulb); Brinjal – Fruit; tea- leaves Ans 14 : Photosynthesis is the process by which green plants prepare their food. In this process, green plants trap sunlight with the help of the chlorophyll present in...
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  • Hydrilla
    Hydrilla’s scientific name is Hydrilla verticillata (L. f.) Royle and the common names for this plant are Florida elodea, water thyme, Wasserquirl, Indian star-vine. Hydrilla also belongs in the species classification. This plant is native to Africa, Australia, and parts of Asia. It was discovered...
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  • bio past paper
    2.1 Diversity of organisms P12-16 2.2 Ecosystem P17-23 2.3 Human impacts on the environment P24-33 SECTION 3 ENERGETICS 3.1 Photosynthesis P34-40 3.2 Respiration P41-46 SECTION 4 OBTAINING ESSENTIALS FOR LIFE 4.1 Nutrition and gas exchange in plants P47-51 4.2 Water...
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  • Hydrilla as Mercury Absorber
    for the elimination and prevention of water pollution, which will cost less than the usual and commercial methods used. Hydrilla (Hydrilla verticillata) is a halophyte. Hydrilla verticillata, a profusely occurring submergent specie, has been found to thrive well in highly polluted water (Sinha, et al...
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  • Effects of Hydrilla on Lake Austin
    when the beauty and functionality of the lake is impeded by an invasive aquatic plant species? This paper will explore that invasive plant known as hydrilla and the effects that it has on water intake structures and power plants, personal property and equipment, as well as on water quality and recreation...
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  • carib
    species that build their physical structure. One such species is the zooxanthellae (Symbiodinium) algae which is needed 44 by coral reefs for photosynthesis and in turn coral reef construction. This symbiosis is destroyed by small increases in temperature. The susceptibility of symbionts to temperature...
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  • Bioaccumulation of trace metals by Hydrilla vercillata and increased levels of lead contamination by Typha latifolia
    Bioaccumulation of trace metals by Hydrilla vercillata and increased levels of lead contamination by Typha latifolia Shankarao A. Patil, Madhavi A. Korane, *Smita V. Patil, Pooja A. Salokhe Department of Biotechnology, Vivekanand College, Kolhapur ABSTRACT Key words : Aquatic plants, Heavy...
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