Can you please help me with a simple and short answers please. Also no meed for
ID: 203343 • Letter: C
Question
Can you please help me with a simple and short answers please. Also no meed for explanation i just need answers.Thank you Role of Green Light Gireen light is only one part of white light (see Fig. 6.3). The photosynthetic pigments absorb certain colors of light better than other colors (Fig. 6.5). According to Figure 6.5, what color light do the chlorophylls absorb best? Least What color light do the carotenoids (carotenes and xanthophylls) absorb best? Least? Hypothesize which color light is minimally utilized for photosynthesis. The following Experimental Procedure will test your hypothesis. Figure 6.5 Action spectrum for photosynthesis. The action spectrum for photosynthesis is the sum of the absorption spectrums for the pligments chiorophyll a, chlorophyll b and carotenoids. The peaks in this diagram represent wavelengths of sunlight absorbed by photosynthetic pigments. The chlorophylis absorb predominantly violet-blue and orange-red light and reflect green light. The carotenolds (carotenes and xanthophylls) absorb mostly blue-green light and refect yellow-red light 60 jo chlorophyll chlorophyllb 80 40 20 380 600 750 Wavelengths (nm) Experimental Procedure: Green Light 1. Add three drops of green dye (or use a green cellophane wrapper) to the beaker of water used in the previous Experimental Procedure until there is a distinctive green color. Remove all previous wax pencil marks from the glass tubing. 2. Record in Table 6.3 your data for gross photosynthesis (mm/10 min) and for rate of photosynthesis for 3. Turn on the lamp. Mark the location of the edge of the solution on the glass tubing. As soon as the white light (mm/hr) from Table 6.2 edge begins to move, time the reaction for ten minutes. After ten minutes, mark the edge of the solution, and measure in millimeters the distance the edge moved. Net photosynthesis for green light = was used for cellular respiration. mm/10 min. As before, net photosynthesis does not take into account that oxygen 70 Laboratory & Photosynthesls 6-6
Explanation / Answer
According to Figure 6.5, what color light do the chlorophylls absorb best? Violet-Blue and Orange-Red light Least? Green light
Carotenoids absorb best? Blue-Green light Least? Yellow-red
The color light which is minimally utilized for photosynthesis is Green color. That's why plants reflect green color.