NEET BIOLOGY

Detailed explanation-1: -Root hair absorbs water from soil through osmosis. Water will be absorbed by root hairs by osmosis as the environment in the soil is hypotonic. This kind of absorption takes place passively.

Detailed explanation-2: -Roots grow from their tips and initially produce thin and non-woody fine roots. Fine roots are the most permeable portion of a root system, and are thought to have the greatest ability to absorb water, particularly in herbaceous (i.e., non-woody) plants (McCully 1999).

Detailed explanation-3: -∙ Roots help the plant to absorb water and nutrients from the soil and also provide support to the plant.

Detailed explanation-4: -Water from the soil is absorbed by the roots through a process known as osmosis. The cell membrane of the root hair cells acts as a semi-permeable membrane. The cell sap inside the vacuole is a strong solution with low water concentration.

Detailed explanation-5: -Diffusion operates by these highly concentrated ions moving as far away from one another as possible, and becoming exposed and available to the plant roots. Phosphate, potassium and zinc are the main nutrient ions moving as a result of diffusion.