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What structure in leaves allows the exchange of gases?
  • a)
    Cuticle
  • b)
    Stomata
  • c)
    Epidermis
  • d)
    Phloem
Correct answer is option 'B'. Can you explain this answer?
Most Upvoted Answer
What structure in leaves allows the exchange of gases?a)Cuticleb)Stoma...
Stomata are tiny pores located on the surface of leaves that allow the exchange of gases, including the intake of carbon dioxide and release of oxygen during photosynthesis. Each stoma is surrounded by guard cells that regulate its opening and closing. An interesting fact is that the number of stomata can vary greatly between different plant species and environmental conditions, helping plants adapt to their surroundings.
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What structure in leaves allows the exchange of gases?a)Cuticleb)Stoma...
Structure in Leaves for Gas Exchange
Gas exchange in leaves primarily occurs through specialized structures called stomata. Stomata are tiny pores found on the surface of leaves, mainly in the lower epidermis. These pores are surrounded by two specialized cells known as guard cells.

Function of Stomata
1. Regulation of Gas Exchange: Stomata regulate the exchange of gases such as oxygen and carbon dioxide between the plant and the environment. During photosynthesis, carbon dioxide enters the leaf through stomata, while oxygen produced as a byproduct exits through the same pores.
2. Water Regulation: Stomata also play a crucial role in regulating water loss from the plant through a process called transpiration. The opening and closing of stomata by the guard cells help in controlling the loss of water vapor.
3. Temperature Regulation: Stomata can also regulate the temperature of the leaf by adjusting the rate of transpiration. This helps in preventing overheating of the leaf tissue.

Importance of Stomata
1. Photosynthesis: Stomata facilitate the entry of carbon dioxide, which is essential for the process of photosynthesis. This allows plants to produce glucose and oxygen for their metabolic processes.
2. Respiration: Stomata enable the exit of oxygen, a byproduct of photosynthesis, from the leaf. Oxygen is required for respiration in plant cells.
3. Environmental Adaptation: The number and distribution of stomata on leaves can vary depending on environmental conditions such as light intensity, humidity, and temperature. This adaptation helps plants survive in different habitats.
In conclusion, stomata are crucial structures in leaves that enable the exchange of gases necessary for plant growth and survival. Their specialized function allows plants to maintain proper gas balance, regulate water loss, and respond to environmental changes effectively.
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What structure in leaves allows the exchange of gases?a)Cuticleb)Stomatac)Epidermisd)PhloemCorrect answer is option 'B'. Can you explain this answer?
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