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Ah, the first volume of the fourth grade lesson 9 what is the function of plant roots and plant roots? My guess, my plan.

1. My guess is that the roots of plants can fix plants. I found that the roots of plants are of different shapes, some like the old man's beard is called fibrous root, some have a main root called taproot, and there are stored roots. (for example, the root of green onion is like a beard, the root of radish is enlarged, etc.) my guess is the process of absorbing water and nutrients. My discovery: the root mainly depends on the root hair to extend into the soil to absorb water.

2. The function of root: as the underground nutrient absorption organ of plant, the main duty of root is to absorb water and inorganic salt from soil to meet the needs of plant growth. In addition, the root is responsible for fixing the position of the plant, storing organic matter, synthesizing certain organic compounds, and carrying out secretory activities. In some plants, roots can also reproduce.

3. It can be said that this lesson is a groundwork for the introduction of meticulous observation, which looks very simple and superficial, but it is to lead students to discover more knowledge about plant leaves in these seemingly unobservable and very superficial observation activities. This lesson is a preliminary observation of the leaves as a whole, laying the groundwork for a detailed local observation of the leaves in the next two classes.

4. Show the roots and let the children touch and feel the external characteristics of the roots. What other plants do you know have roots? Teacher's summary: it turns out that most plants have roots.

5. In agriculture, carbon dioxide is directly used as fertilizer in greenhouse and plant roots are used to absorb carbon dioxide, which can improve plant photosynthesis. Promote the growth of crops and increase yields. In nature, carbon dioxide ensures the need for photosynthesis of green plants and respiration of phytoplankton in the ocean. The second use of carbon dioxide in addition to the various uses of carbon dioxide mentioned in textbooks, there are also some of the following uses.

What is the root function of a plant?

1. Absorption: it can absorb water and nutrition, absorb water to meet the needs of leaf transpiration and results, and absorb nitrogen, phosphorus, potassium and trace elements to meet the physiological needs of vegetable plants. Support: acts as a pillar to make the vegetable plant stand in the soil and make the upper stem, leaf and fruit dependent. Synthesis: the root system synthesizes many endogenous sources to meet the physiological needs of vegetable growth.

2. The action of root absorbs water and the most active part of inorganic salt root system absorbs water from soil is the root hair area at the root tip. The phenomenon of water absorption, which is usually caused only by the activity of the root system, is called active water absorption, while the process of water absorption caused by transpiration of aboveground parts is called passive water absorption. The process by which the roots of metabolic plants absorb mineral ions is called mineral metabolism.

3. Air root: such as banyan tree, it can help to breathe. Radix Isatidis: has the function of supporting plants. Underground root: generally, our common roots belong to this kind of root, which can absorb nutrients. Aquatic root: the root of an aquatic plant, such as water lily and duckweed, that absorbs nutrients. Ring root: for example, the root of sugarcane, which can be used to support plants. Some abnormal roots have the function of storing nutrients.

4. The root is the vegetative organ of higher plants. Roots can fix plants on the soil and absorb water and nutrients dissolved in the soil, and some roots can store nutrients. Plants can't grow without water. More than 80% of the plant's body weight is water. Without moisture, the plant will wither. A sunflower drinks hundreds of kilograms of water a summer, which is absorbed from the soil by its roots. The root is divided into main root and fibrous root.

5. Roots not only provide water for plant survival, but also support and store synthetic organic matter. Roots are the vegetative organs of plants, usually located below the surface, responsible for absorbing water in the soil and dissolving ions, and have the role of supporting and storing synthetic organic matter. The root consists of parenchyma, vascular tissue, protective tissue, mechanical tissue and meristem cells.

What is the function of plant roots?

The main results are as follows: 1. the most active part of the root absorbing water and inorganic salt root system absorbing water from the soil is the root hair area at the root tip. The phenomenon of water absorption, which is usually caused only by the activity of the root system, is called active water absorption, while the process of water absorption caused by transpiration of aboveground parts is called passive water absorption. The process by which the roots of metabolic plants absorb mineral ions is called mineral metabolism.

2. Absorption: it can absorb water and nutrition, absorb water to meet the needs of leaf transpiration and results, and absorb nitrogen, phosphorus, potassium and trace elements to meet the physiological needs of vegetable plants. Support: acts as a pillar to make the vegetable plant stand in the soil and make the upper stem, leaf and fruit dependent. Synthesis: the root system synthesizes many endogenous sources to meet the physiological needs of vegetable growth.

3. The root of a plant has two functions: one is to fix the plant, and the other is to absorb water and nutrients dissolved in water.

4. Mainly absorb water and mineral nutrition. The second is fixed and supported, the third is storage, the fourth is secretion, and the fifth is reproduction.

What is the role of plant roots in plant growth

Roots can also synthesize nicotine, cytokinins and other substances that affect the growth and development of aboveground parts. 5. Storage and reproduction function the roots of radish, sugar beet, sweet potato and other plants all have storage function. The roots of many plants can also produce adventitious buds, which are often used for reproduction. In addition, the root also has many uses, such as edible, medicinal and industrial raw materials. The old roots of certain trees or vines can also be made into root carving handicrafts.

The root is the vegetative organ of the plant, which is usually located below the surface. In the process of plant growth, the root is responsible for absorbing water and dissolving ions in the soil, and has the function of holding the plant and storing synthetic organic matter. The absorption function of water and inorganic salt roots: one is the active "interception" of soil nutrients by roots.

The function of the root is to absorb the water and minerals needed by the plant, the function of the stem is to transport the water and minerals absorbed by the root to the place needed by the plant, and the function of the leaf is to absorb carbon dioxide for photosynthesis and produce oxygen and nutrients needed by the plant. Root: fixed; absorbs water and inorganic salts. Stem: support; transport water, inorganic salts and organic matter. Leaves: the main organs of transpiration and photosynthesis.

The main role of roots to absorb water and fertilizer plant roots is very important, it can help plants absorb nutrients in soil or water, maintain plant growth, if the plant does not have roots, it will not be able to grow normally, will wither and die, and some roots can store nutrients.

Fixed and supporting roles. The root system firmly solids the ground part of the plant in the soil. Synthetic ability. Roots can synthesize and transform a series of organic compounds. These amino acids make up proteins such as glutamic acid, aspartic acid and alanine, as well as various plant hormones such as Longensen, acetic acid, cytokinins, and small amounts of ethylene. Storage function. The parenchyma of the root is well developed and is the place where the material is stored.

The main function of roots is to fix plants and absorb water and inorganic salts from the soil. And storage of water, nutrients, and reproduction, respiration and other functions.

What is the function of plant roots?

Absorption: it can absorb water and nutrition, absorb water to meet the needs of leaf transpiration and results, and absorb nitrogen, phosphorus, potassium and trace elements to meet the physiological needs of vegetable plants. Support: acts as a pillar to make the vegetable plant stand in the soil and make the upper stem, leaf and fruit dependent. Synthesis: the root system synthesizes many endogenous sources to meet the physiological needs of vegetable growth.

My guess is that the roots of plants can fix plants. I found that the roots of plants are of different shapes, some like the old man's beard is called fibrous root, some have a main root called taproot, and there are stored roots. (for example, the root of green onion is like a beard, the root of radish is enlarged, etc.) my guess is the process of absorbing water and nutrients. My discovery: the root mainly depends on the root hair to extend into the soil to absorb water.

The most active part of the root absorbing water and the inorganic salt root absorbing water from the soil is the root hair area at the root tip. The phenomenon of water absorption, which is usually caused only by the activity of the root system, is called active water absorption, while the process of water absorption caused by transpiration of aboveground parts is called passive water absorption. The process by which the roots of metabolic plants absorb mineral ions is called mineral metabolism.

What is the function of plant roots?

Absorption: it can absorb water and nutrition, absorb water to meet the needs of leaf transpiration and results, and absorb nitrogen, phosphorus, potassium and trace elements to meet the physiological needs of vegetable plants. Support: acts as a pillar to make the vegetable plant stand in the soil and make the upper stem, leaf and fruit dependent. Synthesis: the root system synthesizes many endogenous sources to meet the physiological needs of vegetable growth.

Roots not only provide water for plant survival, but also support and store synthetic organic matter. Roots are the vegetative organs of plants, usually located below the surface, responsible for absorbing water in the soil and dissolving ions, and have the role of supporting and storing synthetic organic matter. The root consists of parenchyma, vascular tissue, protective tissue, mechanical tissue and meristem cells.

The most active part of the root absorbing water and the inorganic salt root absorbing water from the soil is the root hair area at the root tip. The phenomenon of water absorption, which is usually caused only by the activity of the root system, is called active water absorption, while the process of water absorption caused by transpiration of aboveground parts is called passive water absorption. The process by which the roots of metabolic plants absorb mineral ions is called mineral metabolism.

The root is the vegetative organ of higher plants. Roots can fix plants on the soil and absorb water and nutrients dissolved in the soil, and some roots can store nutrients. Plants can't grow without water. More than 80% of the plant's body weight is water. Without moisture, the plant will wither. A sunflower drinks hundreds of kilograms of water a summer, which is absorbed from the soil by its roots. The root is divided into main root and fibrous root.

The roots of plants mainly absorb water and nutrients, metabolize, fix plants and reproduce. Absorb water and nutrients. The active part of the root system can absorb water from the soil. In the root tip and root hair area, water absorption is usually carried out only by the independent activities of the root system, which is called active water absorption, while the process of root water absorption caused by aboveground transpiration is called passive water absorption. the new supersedes the old.

Mainly absorb water and mineral nutrients. The second is fixed and supported, the third is storage, the fourth is secretion, and the fifth is reproduction.