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Chrome File Edit View History Bookmarks People Window Help S 844.80 MB Mastering Biology: Module Five Lab Work https:// session masteringbiology.co m/myct/itemView?assignmentProblemID 59765839&offset; next BIO 112 D6B Hel Go Module Five Lab Work Scientific Thinking: Carbon Dioxide and the Growth of Forest Stands previous l 3 of 30 l next Part A-Experimental design: Developing a hypothesis It is important to remember that behind every hypothesis statement, there are assumptions, knowledge, and theories. When developing their hypothesis, McCarthy and her colleagues started by considering the chemical equation for photosynthesis. 6CO2 Energy 206 60 6H20 Carbon Sunlight Carbohydrate Water Oxygen Dioxide As photosynthesis occurs the reactants and energy on the left are used, generating the products on the right. A plan with access to more reactants can grow more than a plant with access to fewer reactants. Suppose you are able to manipulate a plant's access to components in the photosynthesis equation. Drag each label to the appropriate bin to predict how that action will affect plant growth. For each increase or decrease, assume that every other component of the photosynthesis equation is unlimited. Incease coall increase o2 decease decrease sunlight decrease Con rot decrease H:ol increase C6H1206 Increase Sunlight increase decrease o: No effect on plant growth Decrease plant growth Increase plant growth reset help Submit My Answers Give Up IPDFl 25% D Wed 8:42 AM a E Robbie ch label to the appropriate-+. Robbie

Explanation / Answer

Plants usually make their food by the process of photosynthesis during which they utilize CO2 and water as raw material and prepare the food in the form of carbohydrates. O2 is also released as by product of the photosynthesis. Energy for this reaction comes from the sunlight. All these factor affect the plant growth.

Decrease plant growth; Factor which decrease the rate of photosynthesis decrease the plant growth

1. decrease sunlight

2. decrease CO2

3. decrease H2O

4. decrease C6H12O6

the above 3 factor decreases the rate of photosynthesis and thus decrease the plant growth. Decrease in carbohyrate also decrease the plant growth as the food is not available to plant for its activities.

Increase plant growth; Factor which increase the rate of photosynthesis increase the plant growth

1. increase sunlight

2. increase CO2

3. increase H2O

4. increase C6H12O6

No effect: there will be no effect of the conc of O2 as it is released as by prdouct by the plants

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