Fernandes‚ Lisha Almeida Silvia Fernandes‚ Krisann Garrard. The effect of Lead Toxicity on Pollen germination. Received: 15th February 2012 Abstract: Pollen obtained from the Hibiscus rosa-sinensis‚ commonly known as the Hibiscus flower were exposed to different concentrations of Lead to understand the effect of heavy metal on pollen tube germination. Heavy metals such as Lead‚ have shown to decrease the pollen germination and inhibit pollen tube growth. There was a correlation observed
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please help me with my biology practical report‚ its about effect of salt in seed germination) I put seed in plastic container in the dark room…please help me with systematic and random errors) I need to hand up my assignment on 31st of October-2013‚ can you please help me AS SSON AS POSSIBLE THANK YOU‚ I WILL REALLY APPRECIATE YOU IN YOU HELP ME‚ YOU WILL BE GREATFULL FOR ME ) Abstract: The problem was to determine the effect of salt water on germinating radish and sunflower seeds‚ and also
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tests the process of germination with various pH levels. The pH level of something is its measure of acidity or how basic it is‚ solutions with a pH of less than 7 are said to be acidic‚ and solutions with a pH greater than 7 are said to be basic. The tap water that was used to water our beans had a pH of 6. In this lab‚ we studied the process of germination (the process by which a plant grows from a seed). Certain environmental factors can cause or stop a seed’s germination‚ and these factors include
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In this lab the rate of germination in relation to temperature was observed testing the hypothesis‚ if the seeds are exposed to cold temperatures then they will not germinate. In the standard germination test a total of one hundred corn seeds were divided into four groups of twenty-five and each group was used to make a ragdoll. The rag dolls were germinated in room temperature. In the cold test one hundred corn seeds were placed on four layers of moist paper towels in the bottom of a metal tray
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The rate of germination didn’t really vary between the number of paper towels throughout the experiment. Most of the seeds had germinated in the paper towels. The one outlier that was strange was the one paper towels. Only 14 of the 15 seeds germinated in that group. The difference that we could observation was the healthiness of the plants. IV. Conclusion Paragraph 1 Recap (Evidence): The purpose of our lab was to see if the amount paper towels would affect the germination of the seeds. My
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Florencia Rodriguez October 20‚ 2010 IB Biology SLII The effect of three different pH levels (4‚ 7‚ 10) on the rate of germination of spanish beans Research Question: What is the effect of three different pH levels (4‚ 7‚ 10) on the rate of germination of spanish beans? Independent Variable: The different pH levels in the water would be the independent variable in this lab. Three different pH levels were tested‚ 4‚ 7 and 10‚ both 4 and 10 were chosen because they are 3 pH levels away
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1. 1a. Geographic range‚ population density and distribution‚ growth rate‚ and age structure. 1b. Gray squirrels have a very geographic range. 2a. Births‚ deaths‚ immigration‚ and emigration. 2b. The dandelion population will probably grow. Eventually‚ dandelions might take over the lawn. 3a. A population grows exponentially when it has all of the resources it needs and disease and predation do not occur. 3b. Exponential growth shows a “J shaped” curve because with each generation‚ the number
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significant differences in the growth patterns of Vigna radiata when grown under varying light intensities. Plants were grown in two different light intensities‚ normal light and no light‚ for a period of 10 days to determine two different phototrophic effects. The results demonstrated that there was a significant difference between the internode lengths of V. radiata grown under the different light intensities‚ with the plants grown in normal light having shorter internode lengths than the plants grown
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Callosobruchus maculatus oviposition occurred less on black-eyed beans when the legumes were covered with sunflower oil. In all trials‚ the least number of eggs were laid on the beans coated with 15 mL/kg sunflower oil‚ an intermediate number of eggs were laid on the ones coated with 5 mL/kg‚ and the most were laid on the cowpea without sunflower oil (Figure 4‚ Figure 5). No eggs were laid in quadrant C‚ which reinforces the idea that bean beetles will only lay their eggs on legumes (Table 1‚ Figure
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2012-2013 Winter Break Homework Packet Prince George’s County Public Schools Reading/English Language Arts Grade 9 1 GRADE 9 WINTER BREAK READING HOMEWORK PACKET In Preparation for the Maryland High School Assessment‚ PSAT‚ and SAT DIRECTIONS: The enclosed activities are to be completed by your child during the Winter Break and he/she is encouraged to return it to his/her Reading/English Language Arts teacher upon return to school. Parents are encouraged to assist in the following ways:
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