The interrelationship of plants with water, light, and nutrients

Through photosynthesis, plants fix CO2 in the air, combine the water absorbed by their roots from the soil, and convert it into their own nutrients. Along with photosynthesis, plants also undergo respiration, which consumes energy, causing the fixed nutrients to partially break down to provide energy for respiration. Plants photosynthesize when there is sunlight and respirate with or without light.

Plants also undergo transpiration, which acts like a straw that restores moisture from the soil to the air.

Water, light, and nutrients are all necessary conditions for plant growth, and no plant can survive without any kind of plant.

Plants use light to photosynthesize, light is the source of power, nutrients are the basis of the composition of each component of the plant body, and water is an indispensable substance for any kind of life.

Water, light, nutrients, air, etc. are the environment in which plants live, and this environment also has to obtain material circulation through plants and decomposers, which is a mutually dependent relationship.

Water, light, and nutrients are necessary for plants to survive, and plants will not survive without them.

Water light is necessary for the light and function of plants. Nutrients refer to various elements that are indispensable for plant growth.

Plants carry out photosynthesis, using light energy to transform energy and accumulate nutrients in the plant, during which water must participate.

Plant species are complex, but in general, plants use light, water, and minerals they absorb to produce certain essential nutrients.

Plants use light, water, and minerals they absorb to produce certain essential nutrients.

Green plants participate in the carbon and oxygen cycles of the biosphere.

Shao Ming'an, a teacher from the Institute of Water Conservation of the Chinese Academy of Sciences, has a theory that introduces the relationship between them, the SPEC theory.

If you have something in your biology textbook in elementary school, find it yourself.

Water and light are important for plant growth, and water is good for plant growth and absorption of minerals. Light is conducive to the photosynthesis of plants and the production of oxygen. Plant growth is inseparable from water and inorganic salts, plant photosynthesis requires the participation of water, and the transport of nutrients is also inseparable from water, and some inorganic salts are an important part of plant cells.

Water accounts for 60% to 90% of the fresh weight of the plant, which can be used as a solvent for various substances to fill the cell, and can also be combined with other molecules to maintain the normal structure and properties of the cell wall and cell membrane, so that the plant organs can remain upright.

Photosynthesis, plants can use light energy and chlorophyll that animals do not have, use water, inorganic salts and carbon dioxide for photosynthesis, release oxygen bridge gas, and produce glucose - a substance containing celery with abundant energy for the use of plants.

Water and light are important for plant growth, and the dust is wiped out.

Water is good for plant growth and absorption of minerals.

Light is conducive to the photosynthesis of plant-modified bends, and the production of oxygen is generated.

The life and survival of the eight creatures of the Beijing Normal University version of the biology depend on a certain environment (the effect of water on the living things).

Plants absorb water from the soil through their roots, and only about 10% of the water absorbed is used for photosynthesis.

About 90% of the raw materials are used by the plant body, and about 90% of them are transpiration.

In the form of water vapor emitted into the atmosphere This rent is not a waste of water, the transpiration of the green Qi Pao Zen color plant has its positive significance.

Most of the water absorbed by the roots evaporates into the atmosphere through transpiration, and a small part is used by plants as raw materials for photosynthesis.

The main purpose of plants to absorb water is to absorb the heat of the plant itself through evaporation, for example, under the sun, plants need to dissipate their own heat through transpiration, otherwise the plant will be dehydrated by the sun, so most of the water collected by plants in the soil is used for transpiration.

Plant Growth and Mineral Nutrition: Minerals are important components of plant life and are involved in complex reactions, albeit in trace amounts, but they are essential.

Plants grow on water: Water is the carrier for plants to transport various nutrients, in which minerals, organic matter are dissolved, and provide transpiration pull when water evaporates.

Plant growth and photosynthesis: Photosynthesis is an important reaction to make plants themselves, obtaining energy from sunlight for the synthesis of organic matter, without which plants will "starve to death".

It can be said in general terms that water is one of the raw materials for photosynthetic reactions, and the oxygen produced by photosynthesis comes from water molecules. If you look into it in more detail, it involves the photoreaction process.

Photosynthesis includes light reaction and dark reaction, and light reaction includes two steps: (1) the process of absorption, transfer and conversion of light energy through the primary reaction. (2) The process of converting electrical energy into active chemical energy is completed through electron transport and photosynthetic phosphorylation.

To put it simply: during a light reaction, the chlorophyll molecule absorbs light energy and is excited to produce a high-energy electron. This high-energy electron is regularly transferred by a series of substances that donate electrons.

At the same time, the chlorophyll molecule loses an electron, leaving a hole, which immediately gets an electron from the electron donor to fill it, so that the chlorophyll molecule returns to its original state and is ready to be excited again. In this way, the chlorophyll molecule is constantly excited, constantly giving high-energy electrons, and constantly replenishing electrons, which completes the process from light energy to electrical energy (primordial reaction), and this supplementary electron comes from the photolysis of water. The decomposition of water molecules produces oxygen, protons (H+) and electrons (E-), in which oxygen is released (that is, the oxygen released during plant photosynthesis), protons and coenzymes (NADP) combine to form reduced coenzymes (NADPH), chlorophyll accepts electrons from water molecules and returns to the original non-excited state in order to reabsorb light energy.

As a result, the light energy is converted into usable chemical energy, which is stored in the molecules of ATP and reduced coenzymes.

The dark reaction consists of a series of enzymatic reactions that eventually assimilate carbon dioxide into organic matter. ATP and reduced coenzyme (NADPH) generated during the above photoreaction are involved in the reduction of 3-phosphoglyceric acid.

The formula for photosynthesis is: 6CO2 + 6H2O (light, enzyme, chloroplast) C6H12O6 (CH2O) + 6O2

It is easy to know that water is a raw material in this equation, so the presence of water must be present in photosynthesis.

Needless to say, the criteria are summarized as participating in light reactions as a good solvent for transporting various substances.

The water absorbed by the plant body from the soil is mainly usedPhotosynthesisHowever, only about 10% of the absorbed water is used by plants as raw materials for photosynthesis. About 90% are through greeneryTranspirationIt is emitted into the atmosphere in the form of steaming luck.

Soil water is divided into the following types according to the force on which its water is subjected:

1. Adsorption of water.

1. Hygroscopic water: the gravitational force of the molecules on the surface of the soil particles is very large, and the innermost layer can reach the PF value, and the outermost layer is the PF value 4. Therefore, hygroscopic water cannot move, has no dissolving force, plants cannot absorb it, gravity cannot make it move, and can only move under the prerequisite conditions of transforming into gaseous water, so it is also called tightly bound water, which belongs to ineffective water.

2. Film water: It can be absorbed by the plant roots, but the quantity is small, and it can supply the needs of plants in time as early as possible, which is a weak effective water for plant growth and development. It is also known as loosening the binding of moisture.

2. Capillary water.

Capillary water is the most valuable water in the soil, because the attraction of the soil to capillary water is only pf value, which is close to natural water and can move in all directions, and the water absorption of the root system is greater than the suction of the soil to the capillary water, so the capillary water is easily absorbed by plants. The dissolved nutrients in the capillary water can also be used by the plants.

3. Gravity water:

When the water entering the soil exceeds the water holding capacity of the field, a part of the water seeps down along the macropores by gravity, and this part of the soil water subjected to gravity is called gravity water.

1. There will be water droplets in the wall of the bag.

2. Generating principle:

1) Plant respirationPlant respirationThe process of oxidizing carbohydrates, fats, proteins and other substrates to produce ATP, CO2 and water under aerobic conditions is a process that is inverse to photosynthesis. When the oxygen supply of plant tissues is insufficient or anaerobic, the organic matter in it can be partially decomposed, producing a small amount of CO2 and releasing a small amount of energy. This is fermentation, sometimes referred to as anaerobic respiration.

2) Photosynthesis usually refers to the process in which green plants (including algae) absorb light energy, synthesize carbon dioxide (CO2) and water (H2O) into energetic organic matter, and release oxygen at the same time.