Because carbon dioxide is absorbed by the plant during photosynthesis less carbon dioxide present in the chamber is a sign that photosynthesis is working. The four lights used for this experiment range across the light spectrum on both sides in order to test a wider variety of wavelengths. All lights will be placed directly on the spinach leaf at the same distance so as not to give any spinach leaf a different light intensity, which could affect the data. This experiment will be able to show which light, ranging across the light spectrum, will allow the Spinach to perform photosynthesis more efficiently. Hypothesis: If four lights (UV Light, LED Light, Infrared Light, and Blue Light) are used to perform photosynthesis on a spinach leaf, then the spinach will respond most to the blue light and perform a more efficient photosynthetic process.
The process occurs in the stroma and it produces G3P, which is used for carbohydrates such as glucose. Light-dependent reactions, on the other hand, rely on the presence of light energy. The process occurs in the thylakoid and it produces ATP, NADPH, and oxygen as a by-product. Chlorophyll contains a porphyrin ring that allows the free movement of electrons to easily gain or lose them. It is the most abundant pigment for photosynthesis as it absorbs light from most of the spectrum and transfers the energy to the reaction center.
The hormone cytokinin causes this after the exposure of light. Chloroplasts contain chlorophyll and due to this the plant turns green. 1.1 Research question For this experiment, I want to find out what will happen to cress seeds that are etiolising (growing in the dark) when they are then exposed to light. To conduct this experiment, I came up with the following research question: ‘Will exposure to light after a set period of etiolation cause a plant to de-etiolize?’ 2. Hypothesis If a plant is exposed to light after a set period of etiolation, then a plant will de-etioize and the production of chloroplasts instead of etioplasts will be stimulated.
Plants gain energy from sunlight to carry on the reaction 6 CO2 + 6 H2O + energy (sunlight) C6H12O6 + 6 O2 For example, a potato, contains glucose molecules manufactured by process of photosynthesis. In potato, these glucose molecules are bounded with each other in a long chain. Carbohydrates are of two types , the
Survival. Survival mechanism to get sun light needed for photosynthesis, which brings more energy to the plant. “Since plants must make their own food to survive (by changing light energy into chemical energy—a process called photosynthesis), the ability to capture as much of this light energy as possible is crucial to its survival, “(Science clarified, 2017, p.7). We humans when need something we move around and take what we need. Very unfortunate for plants.
I will check if light affects the rate of photosynthesis of the water hyacinth. The number of bubbles produced by the plant is the rate of photosynthesis of the plant. Requirements: 1. 5 Lamps of 0W, 25W, 50W, 100W and 200 2. Test tube (Of 100 ml) 3.
IB biology higher level Internal Assignment Investigation of the effects of light intensity on Egeria Densa’s leaves photosynthesis in the observation on leaf Student name: Eren Kuriyama Date: January Title: Investigation of the effects of light intensity on Egeria Densa’s leaves photosynthesis in the observation on leaf Background information: When sun lights are taken by pigments in the leaf which is chlorophyll a and b, electrons in photosystems are pushing up to high energy level. The leaves producing ATP, to reduce NADP to NADPH, and integrate CO2 to non-chemical molecular during process called carbon fixation. When Egeria Densa leaves are kept in water and through the process of the
Fig: 6 Carbonic anhydrase (CA) activity under heat stress and effect of SIN-1 (peroxynitrite donor). (A) CA activity in sunflower hypocotyls from sunflower plants exposed to high temperature (38o C) and control. (B) Effect of peroxynitrite donor on carbonic anhydrase (CA) activity in sunflower hypocotyls extract from control plants. (C) Effect of peroxynitrite donor on commercial purified bovine carbonic anhydrase activity used as positive control (5 U mgl). (M. Chaki et al.
In plants, the presence of chlorophyll pigment is vital for photosynthesis. However, plant cells produced flavonoid as a response to stress conditions as protection mechanism. In addition, light energy is converted into chemical energy in plant and fungal cells using quinones pigments. On the other