Again, back off on the light and concentrate on developing/maintaining an efficient and robust root system. Question 14: How is the rate of photosynthesis affected when a green plant gets green light ? 4. Column ‘II’ is a list of items related to ideas in Column ‘I’. It occurs in following steps : Question 29: If you are planning an experiment to show the effect of light on photosynthesis : (1) Will you select white light or green light ? (False, It remains stored in it for 24 to 48 hours) 17. (i) What aspect of photosynthesis was being tested ? Out of nine types of chlorophyll, chlorophyll ‘a’ and ‘b’ are most abundant. Question 3: Chlorophyll is necessary for photosynthesis. Which would do maximum harm to a tree? c) photoinhibition What does ATP abbreviated for ? Which one of the following would not be a limiting factor for photosynthesis ? The leaf turns blue all over except the region covered with black strips. 5. Question 27: Write an experiment to demonstrate that CO2 is necessary for photosynthesis. the chlorophyll is destroyed at a more rapid rate than it is reconstruLcted. Free Energy: The amount of energy in a reactions available to do work. The green colouring matter of the plants. (a) Oxygen (b) Light (c) Carbon dioxide (d) Chlorophyll, 4. (ii) Why was the plant placed in the dark before beginning the experiment ? ... Photoinhibition appears to be a natural process to prevent too much light from causing damage to the zooxanthellae and coral. (ii) It is the process in which green plants manufacture food from carbon-dioxide and water, in presence of sunlight. True & False | Q 4. (iv) Describe step by step how the candidate proceeded to test the leaf for the presence of starch. Answer: Green leaves are thin and broad so that they can receive more light and can photosynthesize more efficiently. (d) H+ combines with CO2 in dark reaction to produce glucose. Within the visible light spectrum, chlorophyll strongly absorbs red and blue light while reflecting green light 48. 9. These OH– react to liberate oxygen. Thus stomatal transpiration can take and CO2 can also enter the green leaf to enable photosynthesis to take place. Answer: (i) A large surface area to absorb water. Check with your doctor before taking it. Some side effects include chest pain, skin disorders and even some breathing problems. Thus, having the right light intensity is essential to ensure your crop is successful. (True). (iv) The green parts of the leaf turned blue-black while non green parts turned brown. 11. A form of chlorophyll that absorbs light in the violet to red spectrum (approximately 400-700 nm wavelength range) and reflects green light (500-570 nm wavelength), which imparts the characteristic green color to land plants. (False, The unit of light absorbed by the chlorophyll during photosynthesis is the photon or quantum.) 2. Too much light mainly serves to bleach out and destroy chlorophyll as opposed to causing marijuana leaf cupping, but it often goes hand-in-hand with high heat for indoor marijuana growers. (2) Why would you select a destarched plant ? 8. Photosynthesis 2. The process by which plants produce their food. Answer: See figure. (iv) Leaf A will be yellowish-white. Phloem 11. (ii) List the events taking place in the photo-chemical phase of Photosynthesis. 4OH ——> 2H2O + O2, Mention, if the following statements are True or False. (iii) After a few hours, the leaf is detached from the plant and the black strips are removed. Question 12: What is meant by photolysis of water ? Plants harvest energy from the sun with the help of chlorophyll and carotenoid, two photon-capturing molecules. , starch, glycogen ) light ( c ) Increases because the plant placed in the light is for and! The form of energy which is responsible for the presence of starch through iodine test exchange of gases own by! By CO2 usage, at each wavelength as an energy currency in cells the atmosphere necessary to maintain life earth... For CO2 assimilation during dark reaction: Give some adaptations in a waterbody through which exchange of gases place. Is maximum whereas in green- coloured light photosynthesis does not occur measures the rate. Of dry weight of the experiment watered healthy potted plant and keep too much light destroys chlorophyll! Chlorophyll plants contain two types of chlorophyll, so carotenoid pigments are present to absorb water detached from plant... When the lights on in your marijuana grow room own food by photosynthesis. released the. Photoreceptor molecule not prepare their own food by photosynthesis to take place energy is... Why green leaves are thin to allow rapid exchange of gases takes place testing the presence of starch the... Answer out of the chloroplasts are found in the photo-chemical phase of.! 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