Absorption of water from soil by seeds increases the _______ thus helping seedlings to come out of soil.

Imbibition is the initial step in the germination of the seeds. When mature seeds are sown in soil, they imbibe water and swell. The water is imbibed first by seed coat and then by other tissues of embryo and endosperm. The process of imbibition is important to initiate the seed germination. The pressure that an imbibant develops when submerged in pure imbibing liquid is called imbibition pressure.

Absorption of water from soil by seeds increases t

Notes on Transport in Plants

Concepts Used:

Transport in Plants

The two types of conducting tissues that are used to transport the water and minerals in plants such as:

Xylem:

Xylem is a long, non-living tube running from the roots to the leaves via the stem. The water is absorbed by the root hair and goes through cell-to-cell movement by osmosis until it reaches the xylem. This water is then transported throughout the xylem vessels to the leaves and is evaporated by the process of transpiration.

The xylem is also composed of lengthened cells like the phloem. However, the xylem is mainly accountable for transporting water to all plant parts from the roots. Since they serve such a vital function, a single tree would have a lot of xylem tissues.

Phloem:

The phloem is accountable for the translocation of nutrients and sugar like carbohydrates, produced by the leaves to areas of the plant that are metabolically in force. It is powered by living cells. The cell walls of these cells structurize small holes at the ends of the cells known as sieve plates.

Means of Transportation in Plants:

Transportation in plants is by 3 means, they are as follows:

Diffusion
Facilitated diffusion
Active Transport