What are the common knowledge about plants?

Some biology knowledge in the first year of junior high school.

As I mentioned yesterday when I was just teaching the text, students should be trained to ask questions that are of great value, and such questions often require clarity and specificity. The landlord's problem is that it is neither clear nor specific, so that we don't know what you want to know about the plants. It would have been better if the question statement had been more complete.

Speaking of this issue, I have to talk about it.

Autotrophic Heteromorphic organisms.

Name implies. Plants are autotrophs.

CO2 and H2O are used to synthesize sugars and proteins needed for their own growth under the action of light (photons).

Ethylene is the hormone on which plants grow

It is detached from methionine.

h2n---ch---cooh

ch2ch2sch3

Under the action of an enzyme (name unknown) desch3 decyclization. However, this substance is unstable.

Instantly becomes ch2==ch2 ethylene.

CO2HCN cyanic acid.

Alien organisms themselves cannot simply absorb a little CO2 and water.

Then a basking in the sun is sufficient.

They cannot synthesize the desired organic matter.

Therefore, it is necessary to ingest the organic matter that has been synthesized.

Plants, animals, ---

Fungus. Mushrooms, for example, can't synthesize the nutrients they need on their own.

Mycelium must be used to absorb nutrients from other organisms.

Of course, mushrooms are not plants.

Some bacteria are photosynthetic bacteria.

However, the way in which organic molecules are made is different from that of plants.

So it can't be counted as a plant.

cyanobacterie cyanide bacteria.

Some people have been saying.

Dragongrass, as well as the sandwich grass, are plants.

That's exactly right.

Because the fluid they secrete contains enzymes that break down the (variety) chitin of the bugs.

Beta glycolytic enzymes.

But these things after the breakdown.

Plants are not available.

So they're not the so-called plant-based delicacy.

By the way, the fiber of the plant is cellulose.

Many glucose molecules are linked by beta1--4 sugar bonds.

As beta sugar bonds are more stable than alpha.

So this cellulose is hard.

Or that it is almost indigestible by the human body.

Because the human body does not have beta glycolysis mold.

So eating vegetables won't make you fat.

But animals like cows have mold in their digestive tracts that break down this sugar (symbiotic --- bacteria), so they can grow fat by eating grass.

On the contrary, the stored form of sugar in animals is glycogen.

It is alpha1-4 multimolecular glucose.

The human body has alpha sugar demold.

The decomposition of glycogens in meat is nnnnnnnnnn glucose.

It is immediately used by the body.

Eat meat...

1. Plants are one of the main forms of life, including trees, shrubs, rattans, grasses, ferns, green algae, lichens and other familiar organisms. It is estimated that there are about 350,000 species of seed plants, bryophytes, ferns and ferns. Most of the energy of green plants is obtained from sunlight through photosynthesis, and temperature, humidity, light, and fresh water are the basic needs of plants for survival.

2. Plants have six organs: roots, stems, leaves, flowers, fruits, and seeds. Green plants have the ability to photosynthesize, with the help of light energy and chlorophyll, under the catalytic operation of enzymes, the use of water, inorganic salts and carbon dioxide for photosynthesis, the release of oxygen, the absorption of carbon dioxide, the production of glucose and other organic matter, for the use of plants.

3. Stamens group: a general term for all stamens in a flower, there are many types, but the structure of each stamens is as follows: stigma, anthers, columella, filaments, petals, sepals, ovules, ovary, receptacle, stalk;

4. Photosynthesis: Plants have the ability to photosynthesize - that is, it can use light energy and chlorophyll that animals do not have, use water, inorganic salts and carbon dioxide for photosynthesis, release oxygen, and produce glucose - substances rich in energy for plant use.

5. Respiration: Respiration is an important part of the metabolism of higher plants. It is closely related to the life activities of plants.

Living cells continuously decompose substances through respiration, which plays an important role in the supply of energy required for various life activities in plants and the raw materials for the synthesis of important organic matter. At the same time, it can also enhance the disease resistance of plants. Respiration is the pivot of metabolism in plants.

1. The leaves of mimosas curl up when touched, which is a very interesting plant 2. Venus flytraps can prey on small insects around them 3. Impatiens flowers will produce fruit pods after successful pollination, and these pods will burst and pop open when you touch them with your hand, which is very cute.

The leaves of mimosas, the flower color of snapdragons, the effects of Venus flytraps, the effects of pitcher plants, the properties of bottle grass, and so on, these are all scientific knowledge that exists in plants.

The origin of plants is actually a type of seaweed, which evolved into today's plants about 500 million years ago. In addition, there is a sound in the flowers, but the frequency of the sound of the flowers is not in the range that the human ear can hear.