Analysis of the measurements taken during the experiment resulted in unexpected yet intriguing trends albeit most these trends lacked significance. Hence, we cannot ascertain whether temperature affects the conductance in either H. annuus (sunflower) or N. tabacum (tobacco) plantlets. Based on previous studies conducted on a germane topic, we anticipated that plantlets in a warm climate would possess around 21- 64 % higher mean conductance as compared to those in a relatively cold climate (Seghal et al., 2017). However, the results did not support our prediction. Both H. annuus and N. tabacum plantlets possessed higher conductance in a cold environment relative to a warm environment (Figures 1 & 2). Since statistical analysis determined …show more content…
tabacum can provide a deeper insight into the effects of temperature on the growth of plants that prioritize breadth of leaves rather than height. Results from a prior study conducted on the N. tabacum document that doubling the ambient temperature increased growth by 81% (Seltmann, 1974). Similarly, the control treatment experienced more growth than the experimental treatment proving that tobacco plants spend resources on growth in height as well as broad leaves under warm conditions. Additionally, humidity must have favored tobacco growth because it hindered transpiration. Since tobacco plants in the control treatment expended less energy and resources to replace transpired water, they could have spent their resources on structural growth such as height. Another reason for the increased growth of tobacco plants in warm environments is the retardative effect of cold stress on growth hormone transport such as auxin which is crucial in facilitating both root and shoot growth. Previous studies have presented that decreasing the ambient temperature from 23 ◦C to 4 ◦C reduced auxin transport by more than 50% (Shibasaki et al., 2009). Even though our experiment did not have such a drastic difference regarding temperature, the results of the previous study exemplify the adverse effects of cold environment on plant growth. The experiment’s shortcomings were mainly design flaws and short duration. Variables such as humidity,
Do to the cold climate most plants are tiny ground cover plants, which grow and reproduce with not a lot of haste. They shield themselves from the cold and wind by hugging close to the ground. Some of
Have you ever really wondered how different variables can affect how plants go through photosynthesis? Well, in this experiment, the purpose was to see how various environmental conditions can affect the overall photosynthetic capacity of a specific plant. The factors, light, darkness, cold, and heat were applied to see how the different components would affect the photosynthesis on spinach plants. Each group was given a different factor to test. Out group was given the light factor. The hypothesis for this experiment is that when adding light as a factor, the light will affect the overall plant photosynthesis.
Our data recorded shows that the germinating peas did consume more oxygen than the non-germinating or the glass beads alone and that the cooler temperature did slow down the consumption of oxygen in the germinating peas. In both water baths the atmospheric pressure seemed to increase causing our reading to raise in our glass beads and non-germinating peas. This direct relationship in reading leads us to believe that the oxygen consumption in the non-germinating peas was minimal if any at all.
The ravg for the experimental group was 0.1613 and the ravg for the control group was 0.2047. The results indicated that our predictions were correct; duckweed that received less light exhibited a lower rate of
Transpiration is said to be the loss of water vapor through the stomata of the leaves in a plant. Transpiration essentially serves to move water and other nutrients throughout a plant, to cool down plants and humans and to maintain turgor pressure in the cells of plants (sdhydroponics). The transpiration rate in a plant is affected by the wind, light and humidity. temperature and water. The wind serves to determine how dry the air is when transpiration occurs. Light can at times speed up the rate of transpiration in plants. Transpiration tends to occur faster in the light rather than when in the dark. Humidity serves to determine the rate of the diffusion of water in the plant. As
At low temperatures (5oC-15oC) the rate of photosynthesis will be slow, as the enzymes of the plant do not have enough energy to meet substrate molecules. However, as the temperature increases, there will be a greater rate of photosynthesis, especially as the enzymes approach the optimal temperature. Although once the increase in temperature has gone past the optimal temperature, enzymes will begin to denature and the rate will decrease until there is little or no oxygen being produced by
“Dormancy is a period in an organism's life cycle when growth, development, and (in animals) physical activity are temporarily stopped” (“Dormancy”). Some native plants have learned to adapt to grow a mixture of both short and long roots, so they can absorb moisture from both depths. After the winter season, the deeper roots reach down to absorb the water that has soaked into the deeper ground. Once the water lower in the ground has been absorbed into the tree, the plant uses its shallow roots to begin absorbing the moisture at the surface (Schwinning, Susan. “Sensitivity”). Exotic plants in a new area can cause irregular forest fires, floods, and other unwanted natural disturbances. To prevent these disturbances from occurring, Exotic Plant Management teams are trying to remove unnecessary plants that are only hurting the soil. The Exotic Plants team gives the people taking care of the plants two recommendations. First, they recommended to not worry as much about the bigger exotic plants and try to eliminate the weeds and exotic grasses. Second, is to put as much effort into restoring the native plants that are struggling through the droughts (Daw). Cold season shrubs are one of the few native plants that were not affected by the change in the climate
Temperature influences the distribution of plants and this is another abiotic factor. In the Lions club tower I could feel the difference in temperature. Bottom at being cold and moist whereas the top is warm and dry. This is shown clearly on the average table. Temperatures such as snow or frost determines the distribution of plants as most plants cannot prevent freezing because of their tissues and this abiotic factor affects the plantae group. Other effects that could cause an establishment to particular plants due to temperature is the gemination of biennial plants, and this is during spring or summer known as vernalization. This is the cooling of seed in order to quickly adapt to the environment and the abiotic factors. As of the forest
Plants have evolved sophisticated genetic and epigenetic regulatory systems to respond quickly to unfavorable environmental conditions such as heat, cold, drought, and pathogen infections. In particular, heat greatly affects plant growth and development, immunity and circadian rhythm, and poses a serious threat to the global food supply. According to temperatures exposing, heat can be usually classified as warm ambient temperature
This lab deals with the transpiration rates in plants, specifically a tomato plant that was used for this experiment. Transpiration is when water leaves a plant through the stomata as water vapor while the stomata is capturing CO2 for photosynthesis. This experiment used three different scenarios: a tomato plant with a light shining on it, a tomato plant with wind blowing on it from a fan, and lastly a tomato plant with nothing acting on it. The hypothesis is that the rate of transpiration will be fastest with light, faster with wind, and slow with the control. This hypothesis was rejected because the rate of transpiration is as follows with the wind having the fastest rate: with light the rate was 7.60 mm/min, with wind 10.20 mm/min, and control 4.33 mm/min. The cause of the wind having a faster transpiration rate than the light may have been due to the surface area of the leaves on the tomato plants. The surface area of the leaves for the wind experiment is 8,124mm2, and for the light is 7,740mm2.By doing this transpiration experiment it helps one to see what happens in plants daily and understand why it happens.
In total, 71% of the world is made up of water, this means that without water surrounding us; the earth would be impossible for humans to live on, in addition for any plants or trees to grow which in fact provide us with oxygen. The purpose of our experiment is to prove how celery absorbs water from the roots in order for it recieve the necessary nutrients for it to stay alive and grow. Our data shows the levels of different temperautes affecting how far the celery absorbs the water. The ice water absorbed more water because the soil and roots usually tend to be cooler and fresher, which is why we can conclude that the colder water was absorbed more than the other temperatured
The purpose of the Cell Respiration Comparison was to test the respiration of different types of organisms with different conditions. The importance of testing the respiration was to know in what types conditions the organisms could respire the best. The way that we found out which organism respired the best was by using a Labquest that calculated the respiration rate. When calculating the respiration rate, we found that germinating peas with room temperature respire at a higher rate than germinating peas with a cold temperature. With our findings we can conclude that the temperature affects an organism's respiration
Alternate Hypothesis 1: If the plant is exposed to high temperatures, then the plant will degrade the effectiveness of chemicals to produce a reaction.
Plants are frequently subjected to a wide range of environmental temperatures that may affect the duration of mitotic stages. We investigated the influence of temperature on the duration of mitotic stages in the onion root tip squashes, Allium cepa, by counting the number of cells appearing in each stage of mitosis when exposed to conditions in room temperature and cold temperature. We found that the average number of cells in interphase increased with the decrease in temperature, and the rate of mitosis increased with an increase in temperature. Thus, the increased amount of cells in interphase compared to the amount of cells in other stages at the cold temperature could be the result of the higher activation energy required in situations of lower temperatures, decreasing the rate of respiration and slowing the process of mitosis.
Our lab investigated the morphological characteristics of leaves found in the sun and shade on various species of maple and oak trees around campus. Our null hypothesis was Acer and Quercus acclimate similarly with regards to SLW (specific leaf weight), size, and sinuosity. Our hypothesis was Quercus acclimation is greater than Acer SLW, size, and sinuosity. We tested these hypotheses by picking small sections of a branches from both maple and oak trees. A group was assigned either a maple or an oak tree, and needed a total of three different trees per group. Once three different trees were chosen, groups needed three shade leaves and three sun leaves of off each different tree. In total, each group should then end up with 18 leaves for testing. After collecting the leaves, we ran them through the LiCor 3100 leaf area meter to identify the area of each leaf. Major results found by the classes’ mutual data was each one of our p-values were greater than .05. This means that we failed to reject the null hypothesis. Thus, the lab results do not support our hypothesis that Quercus acclimation is greater than Acer SLW, size, and sinuosity.