The main areas that absorb water and nutrients are:

Plants rely mainly on their roots to absorb nutrients and water.

Roots, generally located below the ground, are mainly used to hold the plant body, absorb water and minerals dissolved in water, transport water and minerals to the stems, and store nutrients.

The root is divided into three parts: the apical structure, the primary structure, and the secondary structure. The root tip is the youngest and most vigorous part of the root, and it is also the main part of the root growth, extension and water absorption.

The most active part of the root system to absorb water from the soil is the root hair area at the root end. The phenomenon of water absorption, which is usually caused only by the activity of the root system, is called active water absorption. The most active areas of root absorption of mineral elements are the root crown and apical meristem, as well as the root hair growth area.

Sogou asked. Extended Materials.

Functions of the root system:

1) Absorption function: One is the active "interception" of soil nutrients by the root system. The second is the migration of nutrients from the soil to the root epidermis under the influence of plant growth and metabolic activities (such as transpiration and absorption), which is called "mass flow and diffusion".

2) Fixation: The above-ground part of the plant is firmly fixed in the soil.

3) Synthesis ability: It can carry out the synthesis and transformation of a series of organic compounds.

4) Storage function: The parenchyma of the root is well developed and is a place for storing substances.

5) Conduction function: water and inorganic salts absorbed by root hairs and epidermal cells.

It is delivered to stems and leaves through the vascular tissues of the roots.

The small intestine in the human body is the main site of digestion and absorption, and the small intestine is very long and has an inner wall. Focus on increasing the area of repair and absorption with small intestinal villi, and there are many children. Digestive juices include intestinal juice, pancreatic juice, pancreatic juice of bile and intestinal juice, which contain a variety of digestive enzymes.

Yes, but starches, proteins, fats are thoroughly digested, and the small intestine is the main place where food is digested. The capillaries of the small intestinal wall are politely closed and are composed of only a layer of epithelial cells. Have your eternally boring absorption of the small intestine sent to me, absorbing water, inorganic salts, vitamins, glucose, amino acids.

Most of the nutrients are absorbed into the bloodstream by the small intestine, which is the main place where nutrients are absorbed.

The main part of the absorption of the Yingsen group nutrient Li Chuncha is which eggplant () aOral cavity. b.Stomach.

c.Duodenum and jejunum.

d.Ileum. e.Large intestine.

Correct answer: Ileum.

Answer]: A nutrients and water mainly rely on the small intestine to absorb the traces of ants, because the small intestine is the longest part of the digestive tract and divides, and there are folds on the surface, which relatively increases the surface area of the small intestine and is more conducive to absorption. Therefore, the correct answer to this question is A.