Investigating if the Number of Leaves Affect the Water Loss From the Previt and the Stem and Leaves
Ideas.
· The amount of water in leaves.
· The thickness of the stem.
· The number of leaves.
· Size of the roots.
· Temperature.
· The amount of leaves that are left on the stem.
· And finally the sizes of the leaves.
AIM.
Our Aim is to find out if the number of leaves affects the water loss
from the Previt and the stem and leaves. I am going to keep everything
the same except for the temperature and the water.
Prediction.
I think that there will be an increase of the water loss. Only if I
increase the number of leaves.
Hypothesis.
I think that there will be an increase of the water loss because the
water travels into the root and up the stem and on its way into the
leave.
After the water travelling into the stem and leave the water stays in
the stem and leaves, The water stays in the leave and then evaporates
from the leaf cells and diffuses out through the stomata.
The more stomata there is the more transpiration there is. If there
were more leaves there would be more evaporation from the leaf cells
on bigger surface areas and there would be more water travelling and
there will be more water loss.
Decisions.
In my experiment I am going to increase the number of leaves because I
have to find out how much water loss theirs been towards the leaf and,
to find out how much stomata there is on the leaf, Basically I have to
discover if there has been a change with the other leaves, By weighing
it. The only way to get more stomata is if there is a big surface area
on the leaf.
In my experiment I will keep the same, the amount of water so it stays
a fair test, secondly I am going to keep the temperature the same, the
Are these water loss values (in 7c) of any use in predicting how much water Darlene might have lost per day? Justify your answer.
These leaves will also have no threat of excessive transpiration because the temperature in the shaded area will be lower and the humidity probably higher. Transpiration is the removal (evaporation) of water from a plant through the stomata in the leaves; this water is removed in a cycle due to the active uptake from the roots. Transpiration involves osmosis; which is the diffusion of water from a high concentration to a lower concentration through a partially permeable membrane, until both the concentrations are equally saturated. All these factors i.e. transpiration and photosynthesis, come together to confirm my hypothesis. To support my hypothesis further, I did a pilot study in a meadow in which I studied the population of certain plant species in areas of
Plasmolysis However when the plant cell is placed in a more concentrated solution the water inside the cell passes out the cell. The cytoplasm... ... middle of paper ... ...
The water moves at a faster rate since there is nothing to absorb the water, which could cause flooding.
If a plant cell is places in a hypotonic solution the cell has a lower water concentration to that of the solution. Water will move into the cell by osmosis from a high water concentration outside the cell to a lower water concentration inside the cell through a selectively permeable membrane. The cell becomes turbid
The another devastating abiotic stress which is considered to be highly responsible worldwide for decreasing yield and quality of crop productivity is drought (Lambers et al. 2008 ; Moghadam et al .,2011; Mohsen Pourgholam et al.,2013 ; M. Farooq et al., 2012; Abolhasani and Saeidi, 2004 ; Monjezi et al., 2013).It harms plant growth and development and reduces crop growth rate and also affects biomass accumulation. Generally, in crop plants drought severely affects the cell division and expansion, elongation of root, leaf size, proliferation of root and inhibition of shoot growth (Sharp & Davies 1989; Spollen et al.,1993;Yamaguchi et al.,2010). Furthermore ,it also badly hampers all kinds of plant functions and physiological and biochemical traits such as mineral elements, carbohydrates, free radicals, ions, hormones, lipids, and nucleic acids (HongBo et al., 2005; Yasar et al., ; Moghadam et al .,2011,Mohsen Pourgholam et al,2013) .The transportation of nutrients from the roots to the stem severely get affected by drought as the rate of transpiration is reduced and damage of active transport and membrane permeability take place (Viets, 1972; Alam, 1999; Yasar et al ). Simultaneously, due to decrease in soil moisture, problem occurs with the low distribution of absorbed nutrients by the plant roots in the soil (Alam, 1999; Yasar et al ). More importantly, drought leads to rise in generation of reactive oxygen species (ROS) due to energy accumulation in stress condition of plants (Smirnoff 1993; Asada 2006; Waraich et al.,2011).Drought diminishes photosynthetic carbon fixation primarily through restraining the entrance of CO2 into the leaf or by reducing metabolism (Smirnoff 1993; Loggini et al., 1999; Ap...
As I do this experiment the thing I am going to be changing is the
Then, repeat steps 7-11 another 4 times but with the room temperature water. For the room temperature water just leave it in the room but try not to change the room’s temperature. 15. Try to put all your recorded data into a table for organization 16. Repeat the entire experiment for more reliable data.
The cause of this change in mass is called osmosis. Osmosis is the movement of water. through cells in plants. I make my prediction on the pretext that water diffuses from high concentration cells to low concentration. cells.
Two members of the group were instructed to visit the laboratory each day of the experiment to water and measure the plants (Handout 1). The measurements that were preformed were to be precise and accurate by the group by organizing a standardized way to measure the plants. The plants were measured from the level of the soil, which was flat throughout all the cups, to the tip of the apical meristems. The leaves were not considered. The watering of the plants took place nearly everyday, except for the times the lab was closed. Respective of cup label, the appropriate drop of solution was added to the plant, at the very tip of the apical meristems.
Annual rainwater harvesting potential is shown in Table 2 whereas Table 3 shows the change in water depth in the wells before and after the interventions (SEEDS 2005).
Prepare casts of the leaves surfaces by painting the adaxial (top surface) of one leaf and the abaxial (bottom surface) of the other leaf with clear nail polish. Allow the nail polish to dry for approximately 10 minutes. While the nail polish is drying, label microscope slides as either adaxial (top of the leaf) or abaxial (bottom of the leaf). Cut a piece of sellotape approximately 1.5 cm in length. Fold the tape over on itself leaving 0.5 cm of sticky surface exposed.
I shall add water as that is the only way I can find out how
Sun leaves and shade leaves can differ in: leaf surface area, thickness, cuticle thickness and chlorophyll content. Shade leaves compared to sun leaves are thinner with only a single palisade parenchyma layer as well as having a higher chlorophyll level and a low protein were as sun leave have opposite characteristics to shade leaves. To understand the stomatal density one must know which leaf, sun or shade, has a higher water level and how big the significance of the stomata is between these two specific types of leaves.
Osmosis is the passage of water molecules from a weaker solution to a stronger solution through a partially permeable membrane. A partially permeable membrane only allows small molecules to pass through, so the larger molecules remain in the solution they originated in. Solute molecule [IMAGE] [IMAGE] Water molecule [IMAGE] The water molecules move into the more concentrated solution. When water enters a plant cell it swells up. The water pushes against the cell wall and the cell eventually contains all that it can hold.