PLANT RESPONSES TROPISM is a biological phenomenon‚ indicating growth or turning movement of a biological organism‚ usually a plant‚ in response to an environmental stimulus. In tropisms‚ this response is dependent on the direction of the species. The word tropism comes from the Greek trope ("to turn" or "to change"). Tropisms are usually named for the stimulus involved and may be either positive (towards the stimulus) or negative (away from the stimulus). Phototropism is the growth response
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CHAPTER ONE 1. ORGANISATIONAL BACKGROUND The Plant Protection and Regulatory Services Directorate (PPRSD) was established in 1965 by an Act of Parliament: Prevention and Control of Pests and Diseases of Plants Act‚ 307 now replaced by “Plants and Fertilizer Act‚ 2010 (Act 803). The PPRSD is the National Institution with the mandate and capacity to organize‚ regulate‚ implement and coordinate the plant protection services needed for the country in support of sustainable growth and development
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Mediterranean plant Banksia and Hakea have the ability to build post-fire communities rather successfully due to seed storage. Almost all of the species studied stored their seeds in dense woody fruit. In order for seed dispersal to occur leading to germination and sprouting‚ the fruit must be dense woody structure of the fruit must be dried. The drying of the fruit causes cracking allowing for the seeds to disperse and germinate. The addition of occasional fires to these communities allow for the drying
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competition affects the growth of Nasturtium officinale given an equal amount of water‚ nutrients and sunlight provided. Research Question: To what extent does the spacing between consecutive seedlings of Nasturtium officinale influence the germination‚ and consequently the lengths of the shoots and roots of the plant. Theory: Intraspecific competition occurs when members of the same species have the same niche and therefore compete for the same resources. Competition is an interaction between
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References: [1] Amri‚ E. (2008). Effect of Timing of Seed Collections an Provenances on seed viability and germination capacity of Dalbergia melanoxylon [2] Amri‚ E. (2010). Effect of age of the donor plant‚ IBA treatment and cutting position to the rooting ability of stem cuttings in Dalbergia melanoxylon [3] Beale‚ D. (1995). "Tree! What Tree? An Ecological Economic
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Division of Masbate G.M.E. Elementary School San Jacinto‚ Masbate FIRST PERIODIC TEST IN SCIENCE AND HEALTH V Directions: Read each item carefully. Encircle the letter of the correct answer on your answer sheet. 1. The ____are the female parts of a flower. a. Pistils b. calyx c. corolla 2. The ____ are the male parts of a flower. a. Pollen b. stamen c. ovary 3. The stamens have pollen in their anthers which contains the ______. a. Ovules .b. egg cells c. sperm cells 4. ______ is
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Respiration of Germinating Peas Abstract Aerobic respiration is an enzyme mediated process during which glucose is used to make ATP to fuel the cells energy needs. Germination is one of such processes that make use of aerobic respiration and because certain factors can affect aerobic respiration‚ it would also affect germination. In this experiment‚ we examined the effects of boiling on the rate of aerobic respiration of germinating peas. Unboiled germinating peas were found to have a more rapid
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card board box with a hole on one side‚ and water. Procedure of the experiment: Two pots are prepared by filling them with soil‚ and are labelled as A and B. A few (2-3) mustard seeds are sown in each of them. The conditions necessary for germination of seeds such as oxygen‚ moisture (water)‚ and optimum temperature are provided in order to allow them to germinate and grow in both the pots A and B for a period of three days. Thus‚ the amount of moisture (water)‚ availability of oxygen‚ temperature
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Plants have two different ways to reproduce. The first one is vegetative reproduction. With this type all the plants that have the same parent have the same genetic make-up. This also lets plants pass adaptations on that they have abtained over the years. Plants with good genetic make-up usually spread quickly and take over an area. An example of this would be the dandelion. These plants can sprout from any part of the plant. An example of this is the potato‚ farmers will pick the potatoes and cut
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20% or less of the cost of planting tubestock)‚ and requires minimal labour. * Existing farm equipment can be used. Alternatively‚ several organisations and landcare groups have direct seeding machines for hire. * Higher plant density after germination provides better shelter to new seedlings and reduces weed competition. It also allows natural selection to sort out the stronger from the weaker plants without creating gaps to be replanted. * Plants are able to “self select” suitable establishment
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