Consequently the auxin diffuses uniformly downwards

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In summary, auxin is a plant hormone produced by the apical meristem in the zone of cell division of shoot and root. It tends to escape from sunlight, so if the zone of cell division is covered, horizontal diffusion of auxin will not occur. This leads to uniform downward diffusion of auxin to the zone of cell elongation. There will not be any polar distribution of auxins if the shoot tips are covered, as they have the highest concentration of phototropin, which senses the direction of light.
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Yh Hoo
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Auxin [/SIZE]as the plant hormone produced by the apical meristem in the zone of cell division of shoot and root tends to escape from the sunlight. Now if the Zone of cell division(tips) of the shoot of the plant is totally covered from sunlight supposedly the horizontal diffusion of auxin in the zone of cell division will not happen. Consequently the auxin diffuses uniformly downwards to the zone of cell elongation of the shoot. Now, will the horizontal diffusion of auxin happens in the zone of cell elongation ?? if it happens, then no use cover the tips of the shoot consisting of the zone of cell division only right ?
 
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Hai...Hai... Anyone know ??
 
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The shoot tips have the highest concentration of phototropin, the photoreceptor proteins that actually sense the direction of light. So covering the tip would not lead to any significant bending. This means there will not be any polar distribution of auxins.
 

FAQ: Consequently the auxin diffuses uniformly downwards

What is auxin and what does it do?

Auxin is a plant hormone that plays a key role in various physiological processes such as growth and development. It is responsible for regulating plant growth by promoting cell elongation, cell division, and differentiation.

How does auxin diffuse downwards?

Auxin diffuses downwards through the plant's vascular system, which consists of specialized cells called phloem. These cells act as a transport system, allowing auxin to move from the site of production (usually the tips of the plant) to other parts of the plant.

Why is it important for auxin to diffuse uniformly downwards?

Auxin diffusion is important for maintaining overall plant growth and development. By diffusing uniformly downwards, auxin ensures that all parts of the plant receive an equal amount of the hormone, allowing for balanced growth and development.

What factors can affect the uniform diffusion of auxin?

The uniform diffusion of auxin can be affected by various factors such as light, gravity, and other hormones. For example, light can stimulate or inhibit auxin production, while gravity can influence the direction of auxin diffusion.

How does auxin diffusion affect plant growth and development?

Auxin diffusion is crucial for plant growth and development as it regulates various processes such as cell elongation, lateral root formation, and tropisms (growth towards or away from a stimulus). It also plays a role in plant responses to environmental cues such as light and gravity.

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