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- Lolita performed the following experiment to study the effects of different types of soil on the rate of growth of plants: 1) planted four saplings of the same kind in pots filled with different types of soil Plant 1: sand Plant 2: loam Plant 3: clay Plant 4: silt 2) watered the plants regularly with equal amounts of water 3) made an accurate record of the heights of each plant once a week for 6 weeks Which of these describes the validity of Lolita's experiment? O A. The experiment is invalid because she used the same type of plant in all the trials. The experiment is valid because all the factors except the experiment variable were kept constant. B ©2021 Illuminate Education TM, Inc.You are interested in the effect of both soil copper concentration and pH on the growth of plantsand decide to conduct a greenhouse study. You have 60 seedlings (same variety) in individualpots; assume the environment is homogeneous. You decide to test 4 levels of copper and 3 levelsof pH. Considering the classic experimental designs (arrangements), what might be anappropriate setup for your study?Discuss the following prompt: In this experiment, we are looking to see how much different types of soil will affect the time it takes for pinto Bean seedlings to germinate out of the ground. The scientific name of a pinto bean is Phaseolus vulgaris. Pinto beans are kind of beans people usually eating, and people commonly use pinto beans in many dishes, such as rice and pasta. Planting pinto beans need many necessary factors, however, I think the type of soil is the most important one to grow it faster. Pinto beans are kind of plants can grow in dark and dry area, so even in dark (less light), they can grow as well. The goal is to determine that soils have different characteristics that can help or hurt plant growth. In order to discover the effects soils have on plant growth, three different soil samples will be used in a controlled study. The samples will vary in consistency, texture, color, location, moisture, and contact with human life to ensure that the samples are…
- Discuss the following prompt: In this experiment, we are looking to see how much different types of soil will affect the time it takes for pinto Bean seedlings to germinate out of the ground. The scientific name of a pinto bean is Phaseolus vulgaris. Pinto beans are kind of beans people usually eating, and people commonly use pinto beans in many dishes, such as rice and pasta. Planting pinto beans need many necessary factors, however, I think the type of soil is the most important one to grow it faster. Pinto beans are kind of plants can grow in dark and dry area, so even in dark (less light), they can grow as well. The goal is to determine that soils have different characteristics that can help or hurt plant growth. In order to discover the effects soils have on plant growth, three different soil samples will be used in a controlled study. The samples will vary in consistency, texture, color, location, moisture, and contact with human life to ensure that the samples are…denitrification occure in wetland soil because - 1 - The top thin layer of soil is oxidized and the soil layer below is reduced. 2 - The top thin layer of soil is reduced and the soil layer below is oxidized 3 - The top thin layer of soil is oxidized and the soil layer below is also oxidized. 4 - The top thin layer of soil in reduced and the soil layer below is also reducedThe following figure depicts the outline of a large fairy ring that has appeared overnight in an open meadow, as viewed from above. The fairy ring represents the furthest advance of this mycelium through the soil. Locations A-D are all 0.5 metres below the soil surface. A В D 1. Which type of organisms made this structure (it wasn't a fairy!)? What is mycelium? Explain in one sentence each. 2. Which location (A-D) most likely indicates the oldest part of this organism? Explain in 1-2 sentences.
- Imagine you were testing how the presence/absence of soil bacteria affected plant growth. In this experiment you had two treatments - one with soil bacteria present, the other with soil bacteria absent. To determine how soil bacteria affected plant growth, you then measured plant height after 1 month. You find that plants grow taller in the treatment with soil bacteria compared to the treatment with no soil bacteria. Which graph or graphs would be most appropriate for portraying the results from your experiment? SELECT ALL THAT APPLY. Scatter plot Pie chart Bar graph Box plot Line graphXerophytic plants are well adapted for very wet conditions. True False Which types of soils usually have reduced supplies of macronutrients (carbon, oxygen, hydrogen, nitrogen, etc.)? neutral soils (pH 7) slightly basic soils (pH 8-9) strongly acidic soils (pH 4-5)What size of soil particles is best for agriculture? What advantages does this size of particles have? What is the type of soil with the size of particles called? (Hint: The name is not in the chapter you will have to check outside sources)
- How does copper contamination in soil affect plant growth in an endangered plant?You haveOne greenhouse with three tables100 seeds (10 each from 10 plants: assume each seed is viable)unlimited pots, soil, copper, etc.ConsiderHow will you set up your experiment?How many samples (per treatment, per measurement)?What will you measure (leaf area, number of leaves, shoot height, shoot biomass)?Soil characterisation could help to determine soil type and soil health. Relate cation exchange capacity (CEC) with soil health and explain the roles of clay and organic matter in contributing to CEC. (i) What would you recommend to improve soils with low CEC and high CEC? Name ONE (1) negative effect of low CEC and high CEC soils, respectively. (ii) (ii) Suggest a suitable soil type for rice, oil palm and durian, respectively.Below are pictures of leaves from a Garry Oak tree (Quercus garryana). These leaves are found on the same tree, however, the top cross section is of a leaf in the lower canopy, which is relatively shaded. The other of the upper canopy, which is exposed to more sun. ENCER 40x (x.s.) Describe two differences between sun and shade leaves at the macroscopic (leaf) and two differences at the microscopic (cross section) scale and provide explanations for the differences observed in color (specific chlorophyll a vs. b enrichment and accessory pigments) and shape (leaf thickness and width). Note: You do not need to sketch out the leaf/slides.