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Respiration in Aquatic & Terrestrial Ecosystems Video Lecture | Biology Class 11 - NEET

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FAQs on Respiration in Aquatic & Terrestrial Ecosystems Video Lecture - Biology Class 11 - NEET

1. What is respiration in aquatic and terrestrial ecosystems?
Ans. Respiration in aquatic and terrestrial ecosystems refers to the process by which organisms take in oxygen and release carbon dioxide. In aquatic ecosystems, such as lakes or oceans, organisms extract dissolved oxygen from the water for respiration, while in terrestrial ecosystems, organisms take in oxygen from the air. This process is essential for the survival of organisms as it provides them with the energy required for various life processes.
2. How does respiration differ between aquatic and terrestrial ecosystems?
Ans. Respiration differs between aquatic and terrestrial ecosystems in terms of the source of oxygen. In aquatic ecosystems, organisms extract oxygen from the water through gills or other specialized respiratory structures. On the other hand, in terrestrial ecosystems, organisms obtain oxygen from the air through lungs or other respiratory organs. Additionally, the concentration of oxygen differs between aquatic and terrestrial environments, which can affect the efficiency of respiration.
3. What are some adaptations of organisms for respiration in aquatic ecosystems?
Ans. Organisms in aquatic ecosystems have evolved various adaptations for respiration. For example, fish have gills that increase their surface area for oxygen exchange in water. Some aquatic invertebrates have specialized structures, such as tracheal gills or branchial trees, to facilitate respiration. Additionally, some amphibians have both gills and lungs, allowing them to respire in both aquatic and terrestrial environments.
4. How do plants respire in aquatic and terrestrial ecosystems?
Ans. Plants in aquatic ecosystems respire through their roots and leaves. They extract oxygen dissolved in water through their roots and release carbon dioxide through their leaves. In terrestrial ecosystems, plants primarily respire through their leaves by taking in oxygen from the air and releasing carbon dioxide. However, in both ecosystems, plants also respire through their roots to some extent.
5. How does respiration impact the balance of gases in aquatic and terrestrial ecosystems?
Ans. Respiration plays a crucial role in maintaining the balance of gases in both aquatic and terrestrial ecosystems. Organisms consume oxygen and release carbon dioxide during respiration, which can lead to changes in the concentrations of these gases. In aquatic ecosystems, excessive respiration can deplete dissolved oxygen levels, leading to hypoxic or anoxic conditions that can harm aquatic organisms. In terrestrial ecosystems, respiration contributes to the overall carbon dioxide levels in the atmosphere, which can influence climate change and global warming.
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