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The leaves of most plants appear green because they contain chlorophyll.
most plant roots grow down, not up!
plants take in nitrogen compounds through their roots.
No, roots do not transpire. Most transpiration occurs in the stems and the leaves of plants. The bigger the leaf, the more moisture will transpire from the plant.
The wavelengths of light that contain the most energy that plants can use are blue.
Generally, most plans grow roots in the top 12 inches of the soil, e.g. the topsoil layer is the most important
Most plants contain the pigment chlorophyll and can produce their own food Most have roots Most have stems Most have leaves They are eukaryote's
in topsoil they can absorb the amount of water and the nutricient they need plus the soil must not be completely wet because the roots rot and they also need air in the roots. in subsoil there is more water and causes diseases to the roots and there is not enough air.so topsoil has less humus
The roots of most plants grow towards the pull of gravity.
Not all plants have roots (eg phytoplankton) and while some plants do grow form their roots (eg grasses), most plants do not grow from their roots but from their apical growing tip.
Topsoil contains all the most recently decomposed bio-matter . It is therefore the most nutrient rich layer, best for growing plants and such.
by the way there are sunlight in human and in soil. ************ Topsoil will contain more humus (notice the spelling!) than subsoil. Topsoil is the layer where most household gardening and food production on farms takes place. The subsoil could be solid clay, which would make the topsoil rather wet after a heavy rain. Or even solid bedrock, with a thin layer of topsoil on top - not really suitable for growing deep rooted plants.
Roots.
roots
Most plants contain chlorophyll which is the pigment that causes them to appear green.
No
The leaves of most plants appear green because they contain chlorophyll.