As it grows and becomes stronger, the seedling changes into a young adult plant, with many leaves. Over time, the young plant will begin to produce buds at the growing tips. These will eventually open up into flowers, which is a good time to introduce kids to the different types.
2:213:46How Does A Seed Become A Plant? | Backyard Science | SciShow KidsYouTubeStart of suggested clipEnd of suggested clipAlways grows downward no matter what way the seed is planted. So you can actually tell which way isMoreAlways grows downward no matter what way the seed is planted. So you can actually tell which way is up and which way is down so the root pushes down deeper and deeper into the soil.
Final germination percentage depended on seed size with large seeds having highest germination percentage, but germination velocity was higher for small seeds. Seedlings from large seeds produced longer roots and shoots than those from small seeds and were able to emerge more rapidly.
The seedling growth is very sensitive to temperature in the first week of postgermination. The growth rate increases linearly between 22 and 31 °C, suggesting that chemical reactions dominate growth. The enzymatic breakdown of the seed reserves support more than 70% of growth during this week.
0:232:20How Plants Grow and Change - YouTubeYouTubeStart of suggested clipEnd of suggested clipWhen a seed gets water and nutrients from the soil it begins to grow the seed sprouts. When a seedMoreWhen a seed gets water and nutrients from the soil it begins to grow the seed sprouts. When a seed sprouts it begins to grow roots. A baby plant is called a seedling.
Seedling growth is a desirable change because it is not harmful to nature and is useful to humans. It is also a chemical change because it involves actions of hormones and enzymes.