For a considerable period of time, the C3 cycle was thought to be the only dark reaction pathway in plants. Compared to C4 plants, C3 plants are inefficient regarding their photosynthetic mechanism. Very few plants (~5%) on earth are C4 type. Thus, this is the summary of C3 and C4 plants. This is the currently selected item. In C4 plants, the bundle sheath cells contain chloroplasts. Growth of C4 plants begins when the soil temperature reach 16 – 21oC. 95% of the trees plants and shrubs on Earth are C3 plants. C4 plants are much more efficient at capturing carbon dioxide. Thanks a lot to the creator of this content really helped me in my studies. C4 plants are abundant in tropical conditions. C3 plants are those plants where the first product of photosynthesis is a 3 carbon compound i.e. Subsequent steps are carried out in bundle sheath cells.14Chloroplasts monomorphic (single type) in C3 plants (usual granal type).Chloroplasts dimorphic: Those in the bundle sheath are large agranal and those in mesophyll are small and granal.15Chloroplasts do not contain peripheral reticulum.Chloroplasts do have peripheral reticulum.16C3 plants can perform photosynthesis only when the stomata are open.C4 plants can do photosynthesis even in the closed condition of stomata.17The optimum temperature for photosynthesis in C3 plants is very low.The optimum temperature for photosynthesis in C4 plants is high.18C3 plants are less efficient in Photosynthetic energy fixation.C4 plants are more efficient in photosynthesis.19Photorespiration rate is very high in C3 plants.Photorespiration is altogether absent in C4 plants (if present very little).20The carbon dioxide compensation point is high (about 50 ppm) in C3 plants.The carbon dioxide compensation point is low in C4 plants (2 to 5 or even 0 ppm).21C3 plants require an optimum temperature range of 18 – 24oC.C4 plants require an optimum temperature range of 32 – 55oC.22Growth of C3 plants begins when soil temperature reach 4 – 7oC.Growth of C4 plants begins when the soil temperature reach 16 – 21oC.23C3 plants are less efficient when the temperature increases.C4 plants are more efficient when the temperature increases.24C3 plants produce higher percentage of crude proteins than C4 plants.C4 plants produce fewer amounts of crude proteins than C3 plants.25The CO2 fixation is slow in C3 plants.The CO2 fixation is comparatively faster in C4 plants.26The rate of translocation of the end-products of photosynthesis very low in C3 plants.The rate of translocation of end-products of photosynthesis is very high in C4 plants.27The optimum temperature for growth is low to high in C3 plants.The optimum temperature of growth is high in C4 plants.28C3 cycle is evolved about 2.5 billion years ago.C4 cycle is comparatively recent in origin. C4 Plants: These plants in addition to C3 cycle, uses an additional dark reaction pathway called C4 cycle. Originated about 12 million years ago. Engineering the C3 plants to C4 or CAM pathway can help scientist to almost double the biomass yield from the same resources. C3 plants produce higher percentage of crude proteins than C4 plants. Photorespiration. C4 plants are warm season plants, commonly seen in dry areas. The optimum temperature for growth is low to high in C3 plants. Some examples of C4 plants are corn and sugarcane. It is due to the photorespiration seen in C3 plants which is negligible in C4 plants. System flow of the comparison between C3 and C4 metabolic networks Biology is brought to you with support from the Amgen Foundation. No.C3 PlantsC4 Plants1C3 plants uses C3 cycle or Calvin cycle for dark reaction of photosynthesis.C4 plants uses C4 cycle or Hatch-Slack Pathway for the dark reaction of photosynthesis.2Examples of C3 plants: Wheat, Rye, Oats, Rice, Cotton, Sunflower, Chlorella.Examples of C4 plants: Maize, Sugarcane, Sorghum, Amaranthus.3First stable product in C3 cycle is a 3 carbon (3C) compound – Phosphoglyceric Acid (PGA).First stable product in C4 cycle is a 4 carbon (4C) compound – Oxaloacetic Acid (OAA).4C3 plants are cool season plants, commonly seen in cool and wet areas.C4 plants are warm season plants, commonly seen in dry areas.5Majority of plants on earth are C3 plants (~95% of total green plants).C4 plants are less in number (about ~5%).6C3 plants are abundant in temperate conditions.C4 plants are abundant in tropical conditions.7Leaves of C3 plants do not have Kranz anatomy.Leaves of C4 plants show Kranz Anatomy.8In C3 plants, the bundle sheath cells do not contain chloroplasts.In C4 plants, the bundle sheath cells contain chloroplasts.9In C3 plants, the carbon dioxide fixation takes place only at one place.In C4 plants, the carbon dioxide fixation takes places twice (one in mesophyll cells, second in bundle sheath cells).10C3 plants possess only one CO2 acceptor.C4 plants possess two CO2 acceptors (primary acceptor and secondary acceptor).11The atmospheric CO2 acceptor in C3 plants is RuBP (Ribulose-1,5-bisphosphate).The first CO2 acceptor (primary acceptor or atmospheric CO2 acceptor) in C4 plants is PEP (phosphoenolpyruvate)12No secondary CO2 acceptor in C3 plants.The secondary acceptor of CO2 (metabolic CO2 acceptor) in C4 plants is RuBP.13In C3 plants, the complete steps of dark reaction takes place in the mesophyll cells only.In C4 plants, the mesophyll cells will only do the initial steps of C4 cycle. In this pathway, carbon dioxide fixation occurs twice. In the light reaction, the chlorophyll molecules in the plants absorb energy from sunlight and synthesize energy rich chemical molecules such as ATP and reduced coenzymes (NADPHH+). All plants use C3 as the basis but C4 plants have an additional step that separates the C3 & C4 cycles in space. Sort by: Top Voted. C4 plants are present in dry and high-temperature areas. C3 plants can perform photosynthesis only when the stomata are open. In C3 plants, the bundle sheath cells do not contain chloroplasts. The difference between C3 and C4 plants. Some C4 plants also function at least partially in C3 or C4 mode. Examples of C3 plants: Wheat, Rye, Oats, Rice, Cotton, Sunflower, Chlorella. CAM is a carbon fixation pathway that revolved in some plants. RuBP can accept CO2 in both C3 and C4 plants. Furthermore, C4 photosynthesis is found in both monocot and dicot species. Does the optimal temperature increase for photosynthesis in C3 plants as atmospheric CO2 concentrations increase, as in green houses with supplemental CO2? Both C3 and C4 plants require 6 molecules of CO2 and 12 molecules of water to synthesis one molecule of glucose. C3 species also tend to generate less bulk than C4 species; however, feed quality is often higher than C4 grasses. What are C4 Plants response to environment conditions in C3 and C4 plants. The key difference between C3, C4 and CAM photosynthesis is the way plants extract carbon dioxide from sunlight, which depends largely on the plant's habitat. Find out the top 15 important difference between C3, C4 and CAM pathway. First stable product in C3 cycle is a 3 carbon (3C) compound – Phosphoglyceric Acid (PGA). Figure2. ATP required The C4 Plants lives as hot moist or arid and nonsaline habitats. @. The first stable product formed in C3 cycle is a three carbon (3C) compound, hence the name. Therefore, C4 plants dominate grassland floras and biomass production in the warmer climates of the tropical and 2. Species: Cactuses and other succulents, Clusia, tequila agave, pineapple. 1. The present post describes the similarities and differences between C3 plants and C4 Plants. C4 plants are more efficient when the temperature increases. Both C3 and C4 plants fix carbon dioxide and produce carbohydrates. As the name indicates, these plants carry out the C4 photosynthetic mechanism. The carbon dioxide compensation point is low in C4 plants (2 to 5 or even 0 ppm). The main difference between C3, C4 and CAM plants is the way these plants minimize water loss. About 85% of plants are C3 plants, and 15% of plants are C4 plants. Therefore, this is also a significant difference between C3 and C4 plants. In C3 plants, the light and dark reactions of photosynthesis occur in a single location. Practice: Photorespiration. Both C3 and C4 are types of dark reactions of photosynthesis. 6. C4 plants are less than C3 but they are efficient in carrying out the process of photosynthesis. Furthermore, C3 plants and C4 plants differ from the first carbon dioxide acceptor. Sort by: Top Voted. Green plants are unique to possess the ability to fix light energy from sunlight through a process called photosynthesis. It evolved as an adaptation to high light intensities, high temperatures, and dryness. Plants utilizing only the C3 cycle are most common in the Plant kingdom. Likewise, the Calvin cycle occurs cyclically while producing carbohydrates. Summary. As the name indicates, they carry out C3 photosynthetic mechanism that is Calvin cycle. The optimum temperature for photosynthesis in C3 plants is very low. Leaf anatomy in C 3 plants: Leaves of C 3 plants show only one type of cell called mesophyll cells which contain mesophyll chloroplast thus in these plants C 3 pathway occur. Photosynthesis is the process that plants use to turn light, carbon dioxide, and water into sugars that fuel plant growth, using the … First stable product in C4 cycle is a 4 carbon (4C) compound – Oxaloacetic Acid (OAA). C 4 Plants. This is the currently selected item. In C3 plants, the light reactions occur in … In C4 plants, the light and dark reactions of the photosynthesis are physically separated and completed in two different locations. C3 plants carry out the Calvin cycle and produce three-carbon compound as the first stable product while the C4 plants carry out C4 mechanism and produce four carbon compound as the first stable product. , tequila Agave, pineapple species: Cactuses and other succulents, Clusia, tequila Agave, pineapple and use! And differences between the graminaceous C3 and C4 plants are plants exhibits C4 pathway during the day the. For photosynthesis in C4 plants differ from the same resources C3 plants, the cycle. 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