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Respiration in Plants Practice Questions - DPP for NEET

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1. What is respiration in plants?
Ans. Respiration in plants is the process by which they convert glucose into energy in the presence of oxygen, releasing carbon dioxide as a byproduct. It occurs in the mitochondria of plant cells and is essential for their survival and growth.
2. How do plants obtain oxygen for respiration?
Ans. Plants obtain oxygen for respiration through small openings called stomata present on the surface of their leaves and stems. These stomata allow the exchange of gases between the plant and the atmosphere, enabling the plant to take in oxygen and release carbon dioxide.
3. What is the role of respiration in plants?
Ans. Respiration is vital for plants as it provides energy for various metabolic processes, such as growth, reproduction, and nutrient absorption. It also helps in the breakdown of stored carbohydrates, enabling the plant to release energy and carry out essential functions.
4. How does respiration in plants differ from respiration in animals?
Ans. Respiration in plants differs from respiration in animals in several ways. Unlike animals, plants do not have specialized respiratory organs like lungs. Instead, they utilize stomata and other structures to exchange gases. Additionally, plants primarily respire aerobically, while some animals can also respire anaerobically.
5. What factors affect the rate of respiration in plants?
Ans. The rate of respiration in plants can be influenced by various factors such as temperature, availability of oxygen, and the presence of certain chemicals. Higher temperatures generally increase the rate of respiration, while lack of oxygen or exposure to toxins can inhibit the process. Additionally, the metabolic activity and physiological state of the plant can also affect respiration rate.
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