a shrub have a higher stomatal index (/density) than those taken from the centre of a shrub this are due to light levels. Explanation: Plants have stomata to obtain carbon dioxide from the atmosphere and remove oxygen produced in photosynthesis. During photosynthesis the chloroplasts in the leaf cells synthesize as a result of exposure to light‚ while oxygen is produced as a by-product. As the outer leafs are exposed to higher light levels the stomatal density has to be high and because the inner
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organisms and the environment through biochemical cycles Carbon Cycle In the form of CaCO3 component of animal skeletons and found in several kinds of rocks Carbon and oxygen form carbon dioxide CO2 Carbon dioxide is taken in by plants during photosynthesis and is given off by both plants and animals during respiration 4 main processes move carbon through its cycle Biological processes- respiration‚ decomposition—take up and release carbon and oxygen Geochemical processes
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All oxygen-breathing life forms take in Oxygen and exhale CO2. Plants take in the CO2 and use it in their photosynthesis process and in turn give off oxygen. The Carbon Dioxide-Oxygen Cycle is a continuously occurring process whereby animals inhale Oxygen and then exhale carbon dioxide‚ and plants use the CO2 and "exhale" O2. Plants and other producers use carbon dioxide in photosynthesis. They produce oxygen as a waste product. Carbon dioxide moves from the air into the leaves of plants. Oxygen
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Nutrients | - | Temperature | - | Humidity | - | Wind | - | Gravity | - | Day length | - | Space to expand | - | Appropriate environmental setting | - | THREE MAJOR three major functions that are basic to plant growth and development Photosynthesis – The process of
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Seven characteristics of life In life‚ there are seven different characteristics these being; movement‚ excretion‚ respiration‚ reproduction‚ irritability‚ nutrition and growth. Below‚ I will explain each of the characteristics in detail. Reproduction means; “the production of offspring by a sexual or asexual process” (oxford concise colour medical dictionary‚ 2007). Animals and plants do this in different ways‚ animals need two parents‚ and therefore the offspring will share both of the parent’s
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is skyrocketing‚ between 2000 and 2007 three new dinoflagellate families‚ 22 new genera‚ and 87 new species were described (Hoppenrath‚ 2012). Many dinoflagellates are primary producers of food in the aquatic food webs (Faust‚ 2014). They use photosynthesis or the Sun for their energy. Although other dinoflagellates are heterotrophs and some are both! Most of them have protective cellulose plates that become encrusted with a hard‚ unreactive‚ colorless compound. Found in the plasma membrane are membrane
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and free-air carbon dioxide enrichment experiments. Elevated CO2 concentrations stimulate photosynthesis‚ leading to increased plant productivity and modified water and nutrient cycles. Experiments under optimal conditions show that doubling the atmospheric CO2 concentration increases leaf photosynthesis by 30%–50% in C3 plant species and 10%–25% in C4 species‚ despite some down-regulation of leaf photosynthesis by elevated atmospheric CO2 concentrations. Crop yield increase is lower than the photosynthetic
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cell lack the pigments‚ either because plastids are not present or the plastid cannot complete the manufacture of the pigment apparatus. White‚ therefore‚ is where color is missing. The zones where chloroplasts are not present are zones where no photosynthesis will occur‚ hence a variegated leaf has a lowered potential to fix carbon dioxide into sugars‚ and as a consequence‚ a variegated plant also tends to grow more slowly. Variegated leaves occur rarely in nature but are extremely common among indoor
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55. a) Cuticles on the outermost layer of angiosperms are clear‚ which allows for light to pass through. The leaf is shaped in a way that will allow it to absorb more sunlight and be more efficient. Photosynthesis takes place in the spongy parenchyma and the palisade parenchyma. In order to obtain food‚ it is controlled by the stoma which controls the passage of gas and water. b) Water and food is transported through the xylem. The water will eventually be transported to the leaf tissue while the
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Introduction: Lycopene is a carotene because of its carbon and hydrogen composition. It is red in color and a member of the carotenoid family. Members of the carotenoid family play integral roles in plants. They use the absorption of light to aid in photosynthesis‚ and protect chlorophyll from damage. In humans‚ Lycopene acts as an antioxidant. Lycopene is found in various fruits and vegetables. The purpose of this experiment is the isolation of Lycopene from tomato paste. This is done using liquid/solid
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