Woody plants carry gaseous exchange through :-a)ROOT HAIRb)STEM HAIRc)LENTICELSd)EPIDERMAL CELLCorrect answer is option 'C'. Can you explain this answer?

Question

Answer

In the plants having herbaceous stem exchange of gases takes place through stomata and the carbon dioxide produced during the process gets diffused into the air via stomata only... while in the plants having hard and woody stems the exchange of gases takes place through lenticels
so the answer is lenticels.

Answer

In the plans having hard and woody stems and mature roots the exchange of gases takes place through LENTICELS.

Lenticels are actually loosely packed dead cells which are present as small pores on the bark of woody plants or old roots.

These enable oxygen to reach the intercellular spaces of the interior tissues and carbon dioxide to be released to the atmosphere by the process of diffusion.

Answer

Plz explain me

Answer

Gaseous exchange in woody plants occurs through lenticels.

Lenticels are small, corky pores found on the surface of woody stems and branches of plants. They are responsible for facilitating the exchange of gases, including oxygen and carbon dioxide, between the internal tissues of the plant and the external environment.

Explanation:

Lenticels play a crucial role in the survival and functioning of woody plants by allowing for the exchange of gases. This exchange is necessary for respiration, which is the process by which plants obtain oxygen and release carbon dioxide.

Here is a detailed explanation of how lenticels facilitate gaseous exchange in woody plants:

1. Structure of lenticels:
- Lenticels are small, raised areas on the surface of woody stems and branches.
- They are formed by loosely arranged cells in the outer bark.
- These cells are relatively large, irregularly shaped, and have air spaces between them.
- The cells of the lenticels are covered by a protective layer of cork cells.

2. Function of lenticels:
- Lenticels act as pores that allow gases to enter and exit the plant's internal tissues.
- They provide a pathway for the exchange of gases between the atmosphere and the living cells beneath the bark.
- Lenticels are the primary sites for gas exchange in woody plants that lack stomata on their stems and branches.

3. Gaseous exchange through lenticels:
- During respiration, plant cells consume oxygen and release carbon dioxide.
- Oxygen from the environment enters the plant through the lenticels.
- Carbon dioxide, produced as a waste product of respiration, is expelled from the plant through the lenticels.
- The exchange of gases occurs via diffusion, where gases move from an area of higher concentration to an area of lower concentration.

4. Factors affecting lenticel function:
- Lenticels need to be open to allow for gas exchange.
- Factors such as humidity, temperature, and the metabolic activity of the plant can affect the opening and closing of lenticels.
- Under certain conditions, lenticels may become blocked or closed, limiting the exchange of gases.

In conclusion, lenticels are specialized structures found on the surface of woody plants that enable gaseous exchange. They provide a pathway for the entry of oxygen and the release of carbon dioxide, facilitating the process of respiration in these plants.

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