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. With over 369,000 species of angiosperms
alone, why do you think we get most of our
nourishment from only three plants (wheat,
corn, and rice)?
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- 3. a)The leaves on a plant in your garden begin to turn yellow. From this observation alone, can. you predict which nutrient the plant lacks? Explain. b)How might the fact that plants don’t move influence their ability to adapt to climate change and other environmental changes? c)Would you expect a changing environment to benefit plants that reproduce sexually or asexually? Explain your reasoning.c) Suppose you count the number of seeds produced by milkweed plants in different habitats with variable numbers of herbivores present. Add trendlines to the graphs below to represent your hypothesized outcomes for fecundity relative to plant damage and latex production. 0.6 0.2 -0.2 -0.6 - -1 2. Latex production index Plant damage index d) Provide a valid rationale to explain why latex production and plant damage would influence seed production as you hypothesized above. Differences in seed production1. what is a crop: 2. Food has to be produced on a large scale. Give reason. 3. What are rabi crops? 4. What are kharif crops? 5. Give example for plants belonging to Leguminosae family. 6. Why paddy cannot be grown in the winter season? 7. What is ploughing? 8. How do you separate good, healthy seeds from damaged ones? 10. What is compost? 11. What is Crop Rotation? 13. What is animal husbandry?
- You are visiting Mercier Orchards in Blue Ridge, Georgia, to pick apples. The apple tree is an example of a deciduous (sheds leaves seasonally) angiosperm. Identify the major sugar source and sink of a general deciduous angiosperm during the following season: A) Summer B) Early SpringA tree produces only seedless oranges. A small branch cut from this tree produces roots after it is planted in soil. When mature, this new tree will most likely produce 7) A) a majority of oranges with seeds and only a few oranges without seeds B) oranges without seeds, only C) oranges with seeds, only D) oranges and other kinds of fruitA healthy red-flowered tulip plant is shown below. Which of the following would occur first as a result of a drought? The tulip's leaves would wilt. O The tulip's flowers would turn blue. O The tulip's stems would grow longer. O The tulip would produce more flowers.
- In walking through our well fertilized spinach field you look over at your neighbors spinach held which is not fertilized. Which statements below are likely to be true? a). your plants will have lower chlorophvll concentrations than your neighbors b). vour feld will have more violaxanthins (me per gFW) than your neighbors c). your plants will have greater chlorophyll concentrations than your neighbors plants d. your plants will generally have more unstacked thylakoidsThe Flemish physician/plant physiologist Jan Baptista van Helmont was the first to publish his claim that the growth of plants (like willow trees) requires nutrition from which environmental source? water (a hydrogen-containing source which we now designate as H2O) sucrose (a carbon-containing source which we now designate as C12H22O11) ammonia (a nitrogen-containing source which we now designate as NH3) glucose (an oxygen-containing source which we now designate as C6H12O6) methane (a carbon-containing source which we now designate as CH4)8.a) Describe the function of pollen in gymnosperm and angiosperm sexual reproduction. b)What are the three most important nutrients for plant growth? c)Why do most commercial fertilizers contain only macronutrients? d)Name the five plant growth regulators that are found in most plants.
- Why is the endosperm being digested?Green revolution semidwarf wheat varieties are shorter because their mutant DELLA protein is not polyubiquitinated they synthesize more gibberellin (GA) they lack phytochrome they do not take up nitrateMiracle RiceRice is staple food in Asia. In the 1950s, Asia faced food shortage and an impending famine. If you have relatives that lived in Asia during the ’50s and ’60s, they may tell you that due to the rice shortage, many starved and those who were lucky had to supplement their diet with other crops, such as barley. In 1962, an organization focused on research and development of rice called International Rice Research Institute (IRRI) developed a high-yielding variety of rice by crossing the two types of rice from Indonesia and China. The result was ground breaking. The new variety called IR8 (India Rice 8) increased its yield as much as 10 times the traditional variety of rice. By the early 1970s, many rice farmers in India, the Philippines, and Vietnam switched to cultivating IR8 rice, making these countries into major rice exporters, preventing a mass famine in Asia, and saving millions of lives. 1) Is the IR8 rice variety considered a genetically modified organism (GMO)? Why or…
