Investigating the Effect of Light Intensity on the Size of a Plantain Leaf

To investigate the influence of the light intensity on the size of Plantagon leaves, investigate the influence of the light intensity on the size of Psyllium leaves. Hypothesis: I predict that the size of Psyllium leaves will increase as the intensity of light decreases. Therefore, the surface area of ​​psyllium leaves found in the shade is larger than the leaves of the vacant lot. Theory: Sunlight is an essential element to the completion of photosynthesis. Photosynthesis consists of the following formula: Nikko Carbon Dioxide + Water ========> Glucose + Oxychlorophyll Chlorophyll is a substance contained in the chloroplast present in cells.

The purpose of this report is to examine the effect of conditions (temperature, light, moisture, sugar, and the effect on pore size and density). The experimental hypothesis is that the larger the light intensity, the larger the pore size, the lower the density, the more water the smaller the pores and the larger the number of pores. Experiments were performed on samples from two plants, geranium plants and Kalanchoe daigremontiana plants. Samples of 1 cm × 1 cm leaves were taken from the two plants, the pore size was measured and the number of pores was calculated. The result shows that the most influential condition is the lighting condition, which shows large pore size and density.

In this experiment the effect of the light intensity on the photosynthetic rate was investigated by recording the time it took for the leaf disc to float on the surface of the sodium bicarbonate solution in the beaker. This method is more accurate than calculating the number of bubbles occurring in a minute after immersing plants. This is because it is easier to observe larger leaf disks than bubbles and it is not necessary to calculate the number of bubbles generated at the same time and there is a possibility that the focus may not be exacted in order to record accurate time .

It is a plant. For example, when examining how the light intensity affects the photosynthesis speed, you can create a "photosynthetic photoresponse curve" - ​​photosynthetic rate at different light intensities. The shape of the curve varies depending on plants and plants with different lighting environments. "Optical response curve" itself is a form of measurement. How do you think about the light response curve of leaves growing in the shade (the first variable) compared to the leaves growing under the sun? In this case, the sun and shadow are the second variables. Comparative photoresponse curve is a standard research technique of plant physiology and ecology

Various physical and physiological factors such as light intensity, humidity, temperature, wind speed, etc. all affect leaf shape and size change. Tall trees have few large leaves as the wind destroys them. Similarly, trees grown in temperate or coniferous forests probably have sharp leaves to prevent ice from nucleating to the leaves and to reduce water loss due to transpiration. Mammalian and insect herbivorous animals are the driving force for leaf evolution. One example is that plants of the New Zealand genus Aciphylla have thorns on their leaves. Without these thorns, other members of Aciphylla will not coexist with More