Introduction To Plant Physiology; Plant's Organs ;i.e. Root; Anatomy of Roots; its tissues and function, Plant Physiology | Semester-1, Bs Applied Biosciences

Function of the organs of the plants:

• Roots performs the function of anchorage, roots absorb water and other nutrients from the soil, transport of the nutrients and water and the function of storage.
• Stem provides the function of the support to the complete plant body and moreover the transport of the nutrients and the water.
• photosynthesis which is the production of the food is performed by the leaves.

Roots:

• Roots which also called the hidden half of the plant

Function performed by roots:

• it include Anchorage of the plant body.
• it perform absorption of water and the other dissolved minerals.
• storage of the surplus sugar and the starch is done by the roots.
• roots attracts beneficial micro-organisms and different fungi that can improve plant growth.
• roots conducts water and nutrients to the entire plants

Anatomy of roots:

Tissue of the roots:

• Roots epidermis: it is the outer most layer of the cells, that is to protect plant from the different diseases . its function includes absorption of nutrients and water.
• tubular extension of the epidermal cells that is called root hair. 
• the function of the root hair is to increase the surface area of the roots to increase the absorption of the nutrients and water

Root ground Tissues:

•  Cortex are the ground tissues in case of the roots.
• the function of the ground tissues (which is root cortex) is to provide support and to store food like starch and sugar.
• its example is sweet potato where food is stored in the root cortex.

Root cortex : endodermis layer of the cells.

• cortex's inner most layer which is actually called endodermis.

Root cortex: Casparian strip

• Casparin strips are present in the endodermis which is the inner layer of the cortex it is the water-impermeable strip which is made up of waxy material.
• Casparin strips create a barrier to have a control over  uptake of materials into the xylem.so that material have to move through the cytoplasm of the cell.