Why do trees grow?

Answer 1

Because they are living things and all living things grow. Trees must grow taller to better access sunlight, especially if there are other trees or anything else nearby that would cast shade on them. As the tree grows taller, it also has to grow wider to prevent being blown over by the wind. Below ground, the roots grow longer to increase the amount of water and nutrients the tree can absorb.

Answer 2

Most tree seeds take root where they fall to the ground. Some are "planted" by squirrels or birds which collect them for food. Humans plant a tiny fraction of trees.

Tree growth occurs as trees pull water and nutrients from the soil. Curiously, most of the tree's mass actually comes from carbon broken out of atmospheric carbon dioxide, through photosynthetic reactions occurring in the tree's leaves.

Answer 3

A response to light is the reason why a tree grows upward.

Specifically, this characteristic response to light is called phototropism. The phototropism can be negative or positive. The tree grows away from direction of the light source when the phototropism is negative. It grows toward the light source when the phototropism is positive.

Answer 4

Trees and bushes both use the same process for growth: photosynthesis. This is how it works:

1- The seed is sunk into the ground over time.

2- Ground water is absorbed by the seed until it cracks open.

3- The inner seed absorbs ground water, grows, and spreads out (it will become the roots).

4- When the roots are big enough, the rest of the seed will sprout, or germinate.

5- The sprout grows a leaf or two, which absorb sunlight as another nutrient. Meanwhile, the seed is gone, and is now just roots connected to the stem, which still absorb ground water. The whole thing can now be called a plant.

6- The leaves also absorb carbon dioxide in the air from animals through tens of thousands of microscopic pores on their undersides.

7- Over months, the plant continues to grow, still using the three nutients: ground water, sunlight, and carbon dioxide.

8- When the plant is old enough (which usually takes a full year for a tree), it will grow little spurs on it's branches.

9- These spurs eventually get big enough to break open and the plant may begin producing fruit or nuts from these, depending on the kind of tree or bush.

10- When the fruits or nuts are fully grown, usually in Autumn, they will fall off the plant.

11- The cycle then continues when the fruits or nut shells decay, releasing the seeds onto the ground.

Answer 5

Because for each dying cells, trees can create new cells for every single part of their body (unlike human).

The reason for this is that because trees have much simpler cells than animal and humans (and less varieties) and therefore, the process of reproducing these cells would also be much simpler than a human (or animal) would. In theory, all cells are meant to be reproduced so the question should have been "why human stops growing".