What determines the maximum height to which vegetation can grow?

Answer 1

The problem is the transport of water to the top. Depending on the species, the power of the capillaries is limited (perhaps the wrong word, I'm not so common with biology in English).

Answer 2

Root growth!

If the roots are limited, the height of the plant is also limited. i.e. Bonzai trees & miniture forests.

If you look at a tree, the amount of above-ground area is equivulant to the amount of area for the roots.

In essence what happens with a bonsai or miniture forest is that the roots are bound due to a physical barrier, lack/overabundance of nutrients &/or organic matter, hydration, and/or soil pH.

But what I find that determines the maximum height of a plant is the root size. A small container will grow a small mother plant, whereas a clone of the same plant in a large container will grow larger than the mother plant. Try it & you will see that it is true!

Answer 3

Depends on the species--in species (trees) that have the structural capability (wood) to grow tall, it's capillary pressure (although the tallest trees, coast redwood and Douglas-fir, can also absorb water through their needles and they're studying whether isotope pressure is a limiting factor) and water reaches a physical limit of being drawn up from the roots to the top of the tree.
Sometimes it's environmental--in many coastal or very windy habitats you see very even heights, since anything above that is wind-trimmed. Or the soil may be too shallow or poor in nutrients to support vigorous growth.

Answer 4

water transport mostly, if its not affected by wind. If you go to the Highlands you wont find any trees at all.

It is the genetics as it affects how the plant transports water to its upper reaches.

Its to do with tracheids and xylem vessels, the things that carry water. its not capilliarity, its cohesion-tension theory. Water sticks to itself and the inside of the vessel, so if the vessels aren't strong enough thye just kinda collapse in on themselves. The size of leaves or spines at the top of a tall tree can be much less than then size at the bottom, because of teh forces acting upon them.

This is kind of haphazard -there's a really good article in the Biological Sciences Review vol 18 No.1 by Philip Allan Updates but i don't know if you can get it where you are as i get it through sixth form.

Answer 5

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Answer 6

Jack should know the answer to this question. ---****Sorry I couldn't help myself with that answer******

It just doesn't seem logical when you think about it that there should be a maximum height - well I guess the atmosphere in space might prevent things from growing quite that high. I'm sure there is a logical answer and I'm sorry I don't know it.

Answer 7

it depends on gibberelin a hormone.just inject a bit of gibberelin into a plant and u can definitely see it shoot up in height.

Answer 8

it's genes.