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Mark (T) If The Statement Is True and (F) If It Is False: (i) Carbon Dioxide Is Released During Photosynthesis. (T/F) (ii) Plants That Synthesize Their Food Are Called Saprotrophs. (T/F)
An Overview of Photosynthesis and Saprotrophs
Photosynthesis is a vital process for life on earth, as it allows plants to produce their own food using energy from the sun. In this article, we will explore the process of photosynthesis and discuss the statement that carbon dioxide is released during photosynthesis. We will also examine the statement that plants that synthesize their food are called saprotrophs and determine if it is true or false.
What is Photosynthesis?
Photosynthesis is a biological process in which plants, algae, and some bacteria convert light energy from the sun into chemical energy. This chemical energy is then used to produce organic compounds, such as sugars, which the plants use as a source of energy for growth and development.
The process of photosynthesis can be divided into two stages: the light-dependent reactions and the light-independent reactions. The light-dependent reactions occur in the thylakoid membranes of the chloroplasts and involve the absorption of light energy by pigments called chlorophyll. This energy is then used to generate ATP and NADPH, which are used in the next stage of photosynthesis.
The light-independent reactions occur in the stroma of the chloroplasts and involve the conversion of carbon dioxide into organic compounds using the energy from ATP and NADPH produced in the previous stage. This process is also known as the Calvin cycle.
Is Carbon Dioxide Released During Photosynthesis?
The statement that carbon dioxide is released during photosynthesis is false. In fact, the opposite is true: during photosynthesis, carbon dioxide is consumed and converted into organic compounds.
In the light-independent reactions of photosynthesis, carbon dioxide is combined with a five-carbon sugar called ribulose bisphosphate (RuBP) to form a six-carbon compound called 3-phosphoglycerate (3PG). This reaction is catalysed by an enzyme called Rubisco (ribulose bisphosphate carboxylase/oxygenase).
The 3PG molecule is then converted into other organic compounds, such as glucose and other sugars, which can be used by the plant as a source of energy or stored for later use. Oxygen is also produced during the light-dependent reactions of photosynthesis, but it is not released during the light-independent reactions.
What are Saprotrophs?
The statement that plants that synthesize their food are called saprotrophs is false. Saprotrophs are actually organisms that obtain their nutrients by decomposing dead organic matter. They play a vital role in the ecosystem by breaking down dead plant and animal material, releasing nutrients back into the soil, and making them available to other organisms.
Plants that synthesize their food using photosynthesis are actually called autotrophs. Autotrophs can be further divided into two categories: photoautotrophs and chemoautotrophs. Photoautotrophs, such as plants, algae, and some bacteria, use energy from sunlight to produce organic compounds through photosynthesis. Chemoautotrophs, on the other hand, obtain energy from chemical reactions, such as the oxidation of inorganic compounds like ammonia or hydrogen sulphide.
Conclusion
In conclusion, photosynthesis is a vital process for life on earth, as it allows plants to produce their own food using energy from the sun. During photosynthesis, carbon dioxide is consumed and converted into organic compounds, and oxygen is produced as a by-product. Plants that synthesize their food using photosynthesis are called autotrophs, not saprotrophs.
Saprotrophs, on the other hand, obtain their nutrients by decomposing dead organic matter. Understanding these concepts is important for understanding the role of plants and other organisms in the ecosystem, and for developing sustainable agriculture practices that can help feed the growing.
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