Lab+10+Plants

no Vascular tissue 1. Stems are the main support for flowers and leaves in plants. The stem also surves as the food supplyer, which delivers minerals, water, and sugers to the different parts of the plant. 2. Leaves it takes in light for the production of sugers throught photosnthesis. A leaf tends to have a flat surface in oder to maximise light absorbtion. 3. Buds are where leaves and flowers arise from. The bud protects for a certin period of time befor it starts to bloom but it need a specific amount of hows of a specific tempeture inorder for the bud to be ready. If this does not occur it is weakened and the weather will be able to disturb its annul spouting process. 4. Roots absorb nutrients and moisture. They also anchor the plant in the soil so that it will not be blown away inorder for it to go through its normal annul cycle. It furnishs physical support for the stem, and serves as a source of food. In some plants roots may be used as a means of propagation. 5. Flowers are the reproductive parts of a plant. It contains either the male pollen or the female ovule. The flower tends ot be the prettiest part of the plant. Its fragrance and color are meant to attract pollenators in order for the plant to continue is reproduction. 6. Fruit are the off spring of a plant that carries seeds. 7. Seeds are used for reproduction.
 * 1. PLANT PARTS AND FUNCTIONS**
 * Did the tint reach the top?**
 * Which kind of tissue is responsible for the above observation?**

A. The epidermis is a single layer of cells with a thick cuticle covering the outermost surface. B The collenchyma has cellulose thickenings in the corners of the cells. C The parenchyma has large cells with thin cell walls. D The vascular tissue is arranged as discrete collateral bundles. Each vascular bundle has phloem to the outside, xylem to the inside and cambium between. E. The sclerenchyma caps the vascular bundle.

1. What is the difference between transpiration and capillary action? Which did you see in this experiment? Transpiration is like evaporation and capillary is the up ward movement of water. Capillary action is seen in the experiment. 2. Where is xylem and phloem tubes found in a tree? Xylen outter and phloem inner most tube. 3. Does transpiration occur when the tree drops its leaves in fall? no 4. In which tissue is the sap found? phloem


 * 2. OSMOSIS AND DIFFUSIO **

**A.** 1. Define diffusion. <span style="font-family: Arial,Helvetica;">the spread of particles from higher to a lower concentration. <span style="font-family: Arial,Helvetica;">2. Define osmosis. <span style="font-family: Arial,Helvetica;">the movement of solvent molecues from a lower concentratio to a higer one through a membrane. <span style="font-family: Arial,Helvetica;">3. What is the main difference between osmosis and diffusion. <span style="font-family: Arial,Helvetica;">one goes from a higher concentration to lower and the other goes from lower to a higher concentration. <span style="font-family: Arial,Helvetica;">4. Why is iodine called an indicator? <span style="font-family: Arial,Helvetica;">because it reacts with the strach found in plants. <span style="font-family: Arial,Helvetica;">5. Molecules tend to move from areas of ___lower concentration to areas of__ higer concentration. <span style="font-family: Arial,Helvetica;">6. What does "semi" or selectively permeable mean? <span style="font-family: Arial,Helvetica;">because it is a membrane that only allows certin molecules and ions to pass through difussion.

<span style="font-family: Arial,Helvetica;">**B.** <span style="font-family: Arial,Helvetica;">1. Is the baggie or beaker more concentrated in starch? <span style="font-family: Arial,Helvetica;">baggie <span style="font-family: Arial,Helvetica;">2. Is the baggie or beaker more concentrated in iodine? <span style="font-family: Arial,Helvetica;">beaker <span style="font-family: Arial,Helvetica;">3. Iodine solution: is the baggie or the beaker hypertonic? <span style="font-family: Arial,Helvetica;">beaker <span style="font-family: Arial,Helvetica;">4. Starch solution: is the baggie or the beaker hypertonic? <span style="font-family: Arial,Helvetica;">baggie <span style="font-family: Arial,Helvetica;">5. Which one is hypotonic in relation to starch, baggie or beaker? <span style="font-family: Arial,Helvetica;">baggie

<span style="font-family: Arial,Helvetica;">**C.** <span style="font-family: Arial,Helvetica;">1. If the baggie was permeable to starch, which way would the starch move, into the bag or out of the bag? <span style="font-family: Arial,Helvetica;">if the starch was soluble which depends on the particle size. <span style="font-family: Arial,Helvetica;">2. If the baggie was permeable to iodine, which way would the iodine move, into or out of the bag? <span style="font-family: Arial,Helvetica;">through concentration, which is from lower to higher. <span style="font-family: Arial,Helvetica;">3. If the baggie was permeable to iodine, what color would you expect the solution in the baggie to turn? What about the solution in the beaker? <span style="font-family: Arial,Helvetica;">the color in the bag would turn to a foggy grey. Would begin to clear because the starch would drop to the bottom. <span style="font-family: Arial,Helvetica;">4. If the baggie was permeable to starch, what color would you expect the solution in the baggie to turn? What about the solution in the beaker? <span style="font-family: Arial,Helvetica;">the baggie water would clear. The beaker water would turn to a darker grey color because there would be no starch to fog it up. <span style="font-family: Arial,Helvetica;">5. Make a prediction about what you think will happen: <span style="font-family: Arial,Helvetica;">well since the bag is not actually permeable the soultions will stary the same and the in both containers the starch will drop to the bottom.

<span style="font-family: Arial,Helvetica;">**D. Data Table**


 * || <span style="font-family: Arial,Helvetica;">Starting Color || <span style="font-family: Arial,Helvetica;">Color after 15 minutes ||
 * <span style="font-family: Arial,Helvetica;">Solution in Beaker (iodine and water) || very dark grey || a bit clearer ||
 * <span style="font-family: Arial,Helvetica;">Solution in Bag (starch and water) || a light greish || clear color ||

<span style="font-family: Arial,Helvetica;">1. Based on your observations, which substance moved, the iodine or the starch? <span style="font-family: Arial,Helvetica;">starch <span style="font-family: Arial,Helvetica;">2. How did you determine this? <span style="font-family: Arial,Helvetica;">because the baggie did not turn to a darker grey color. <span style="font-family: Arial,Helvetica;">3. Is the plastic baggie selectively permeable? <span style="font-family: Arial,Helvetica;">yes <span style="font-family: Arial,Helvetica;">4. Is the bag permeable to water? Why do you think so? <span style="font-family: Arial,Helvetica;">yes because water had to flow between both containers for the experiment to work <span style="font-family: Arial,Helvetica;">5. Was there a net gain of water into the bag? Did you measure the contents of the bag in ml after the experiment? What was responsible for your observation? <span style="font-family: Arial,Helvetica;">no did not measure the water in the bag because we were looking for a change between the starch and iodine
 * <span style="font-family: Arial,Helvetica;">E. Analysis **