Start studying 4) Explain: CAM, C3 C4 morphology and function. So the only real difference between C3 and C4 photosynthesis is that between the light-dependent and Calvin-Benson cycle, there is an additional step where carbon is transported to the interior of the leaf. C4 plants may be better adapted now, as the current carbon dioxide levels are much lower than 100 million years ago. Consequently C 4 plants need less of this enzyme, which is by far the most abundant protein in leaves of C 3 plants. They mostly live in environments with a moderate amount of sunlight, moderate temperatures and plenty of water, and they use the C 3 carbon fixation pathway (or Calvin cycle) to integrate the CO 2 into a three carbon sugar, hence C 3.. 2. Difference Between C3 And C4 Plants In Tabular Form. Leaf anatomy in C 4 plants: Leaves of C 4 plants show two type of cells viz. Granal in mesophyll cells and agranal in bundle sheath cells.15RuBP is the only CO2 acceptor in C3 cycle.There are two CO2 acceptors in C4 cycle. Suggestion: construct a table comparing CAM, C3, and C4 plants. Figure 1. It is because of the occurrence of photorespiration in C3 plants. In C plants, carbon dioxide enters the Calvin cycle and the first product that results form carbon fixation is 3-phosphoglycerate. Table showing C3 and C4 plants differences. Two types of chloroplasts are involved in C4 cycle. Here, we are classifying them into two major types C3 and C4 plants. This difference presumably results from the relatively smaller investment of N in the photosynthetic carboxylation enzymes of C 4 plants than of C 3 plants. Photorespiration occurs due to the oxygenase activity of Rubisco enzyme. 2. Ø End products of C3 and C4 cycle are similar. Photorespiration. Video Lecture on Difference Between C3 and C4 Plants from Photosynthesis in Plants chapter of Biology Class 12 for HSC, CBSE & NEET. C4 plants are more productive in hot and dry climates than C3 products because they use 3-fold less water and can grow in conditions of drought or high temperature. C3 Pathway (or Calvin Cycle) C 3 plants are by far the most common type of plant on earth (~95%). Likewise, interaction with oxygen and carbon dioxide occurs at the same site on Rubisco. The first describe dark reaction pathway, better known as Calvin cycle (Melvin Calvin who discovered this pathway), is called C3 cycle. First stable product in C4 cycle is a 4 carbon (4C, hence the name) compound – Oxaloacetic Acid (OAA). These competing reactions normally run at a ratio of 3:1 (carbon: oxygen). Phosphoenolpyruate (PE) is the primary CO2 acceptor in C4 cycle. Dr.Samanthi Udayangani holds a B.Sc. ADVERTISEMENTS: 3. https://www.differencebetween.com/difference-between-c3-and-vs-c4-plants Both C3 and C4 plants fix carbon dioxide and produce carbohydrates. The key difference between C3 and C4 plants is that the C3 plants form a three-carbon compound as the first stable product of the dark reaction while the C4 plants form a four-carbon compound as the first stable product of the dark reaction. C3 and C4 cycle are two types of cyclic reactions that occur as the dark reaction of the photosynthesis.Photosynthesis is the production of simple organic molecules, glucose from inorganic molecules, carbon dioxide and water, using sunlight as the energy source. Differences between C3 and C4 species are shown in Table 1. Photorespiration is a process that wastes energy and decreases carbohydrate synthesis. No.C3 Cycle (Calvin Cycle)C4 Cycle (Hatch & Slack Pathway)1C3 cycle is commonly known as Calvin Cycle (Melvin Calvin described it first).C4 cycle is commonly known as Hatch and Slack pathway (in honor of Marshall Davidson Hatch and C. R. Slack who elucidated this pathway).2Examples of C3 plants: Wheat, Rye, Oats, Rice, Cotton, Sunflower, Chlorella.Examples of C4 plants: Maize, Sugarcane, Sorghum, Amaranthus.3Leaves of C3 plants do not have Kranz anatomy.Leaves of C4 plants possess Kranz anatomy.4C3 plants are cool season plants, commonly seen in cool and wet areas (temperate areas).C4 plants are warm season plants, commonly seen in dry areas (tropical areas).5The C3 cycle is present in all plantsThe C4 cycle is present only in C4 plants6First stable product in C3 cycle is a 3 carbon (3C, hence the name) compound – Phosphoglyceric Acid (PGA).First stable product in C4 cycle is a 4 carbon (4C, hence the name) compound – Oxaloacetic Acid (OAA).7The CO2 acceptor in the C3 cycle is RuBP (Ribulose-1,5-bisphosphate), RuBp is a 5 carbon compound.The first CO2 acceptor in the C4 cycle is PEP (Phosphoenolpyruvate). To this fact, C assimilation is less than C3 but they are efficient in carrying out the plants... 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