What is the function of chloroplasts of in a Guard cell?andfew more bio questions. first accurate answer 10pts

I got a few bio questions for my lab.


1. What is the function/functions of a chloroplast in a guard cell.


2.while guard cells are performing photosynthesis, what happens to their sugar and water concentration?


3. what part of the day are stomates open and when are they closed?


4.how does the shape of a leaf help it use sunlight efficiently?


5. plants have what is called a cuticle. do some reasearch or online to explain the funtion of the cuticle... (yahoo answers =D)


6. what typical plant cell organelle would a root cell have less of than a leaf? explain.


7. what factors regulate the opening and closing of stomates?


8.explain how ur answer to question #2 is an example of homeostasis.


9. what affecr would a drought have on a plant regarding stomates?


10. on which leaf surface of a water lily plant would you expect to find the stomates(top or bottom)? explain your answer?





I cant explain how much of a help it would be for someone to answer these questions.Pleaase. Thanksalot?

What is the function of chloroplasts of in a Guard cell?andfew more bio questions. first accurate answer 10pts
This information is more accurate, and easier to understandthan the previous post. WARNING: THE PREVIOUS POSTER GOT THE ANSWER TO #'S 1 AND 10 WRONG. THE CORRECT ANSWERS ARE HERE.





1. Their function is to provide enough energy to the guard cells so they can open and close when needed.





2. Their sugar concentration would go up, while the water concentration would go down.





3. The stomates close during the day because during the day the sun would cause too much water loss through transpiration. They open at night to prevent this.





4. It is wide and thin, to expose as much of the chloroplast containing cells to sunlight as possible.





5. Cuticle is like our skin. It is a waxy substance that allows the plant to maintain water in dry places, like a dessert, where as much water needs to be kept as possible.





6. A root cell would not have any chloroplasts because it is underground, and therefore does not receive any sunlight (which the chloroplast needs.)





7. The opening and closing is regulated by the guard cells, and is affected by how much water the plant has, and how much is in its environment.





8. Homeostasis can be described as staying internally stable, making the sugar provides the energy needed to keep homeostasis.


9. The stomates would all close to prevent water loss through transpiration.





10. The stomates would be on the top because if they were on the bottom the plant would drown because there would be no air to exchange gases.
Reply:1. Guard cells function in gas exchange in plants. ie. CO2 for O2.





2. Their sugar concentration increase because sugar is formed during photosynthesis and water content would decrease it requires water, carbon dioxide and sunlight to form the sugar glucose which is performed during photosynthesis.





3. Stomatas open at night because during the day the sun would cause too much water loss. They close during the day to prevent this.





4. The shape of a leaf can be seen as a surface area of little factories (chloroplasts) and different shapes are angled differently and absorb moisture and sunlight in different ways.





5. Cuticle for plants is like our skin or hair. It's a waxy substance that allows the plant to maintain water in dry environments. Take a look at a cactus and you'll notice thick leaves with thick cuticle to prevent water loss in the hot desert.





6. The would have less chloroplasts and mitochondria since photosynthesis doesn't really take place in roots and respiration is primarily in the mitochondria. Roots just mainly store food.





7. The opening and closing is regulated by guard cells and a form of phototropism.





8. Homeostasis is just maintaining a functioning, pleasant environment. The influx and leaving of gases in a plant is necessary for a pleasant balance.





9. The stomata would probably cease to open all together to to their natural purpose to prevent water loss.





10. The stomata would be on the bottom because this prevents direct exposure to atmospheric conditions and allow better gas exchange they don't have to worry about being drenched with water.

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