ps: Thanks to the demon god. Lucifer's monthly pass!

Although Chu Jiaqiang reminded him many times to watch the road carefully, some people slipped and fell, and some people didn't pay attention and were cut by the miscanthus grass on the side of the road. Fortunately, those guys also came prepared, with a hemostatic patch, wash the wound first, and put a band-aid on it.

"This thing is so annoying." Tang Liye was a hero and ran to the front, and it didn't take long to find that there were many "arrow feathers" hanging on his clothes. It's all those cang-eared, ghostly needlework, stealing clothes, etc., once they come across it, they will follow you.

The others immediately laughed, and the guy not only had it on his clothes, but also the hair on his head seemed to be sticky to it.

"It's so unlucky, which of you will go first! I'll have to sit for a while and get rid of these things, it's uncomfortable. Tang Liye didn't dare to leave first this time.

"This seems to be called Cang'er, right? Someone told me that last time. One of the tourists pointed to the little hedgehog-like fruits.

Chu Jiaqiang nodded, Cang'er this thing seems to be really everywhere, every time you return from a field trip in autumn, its fruit will hang on your clothes and pants, carefully inspect its prickly hairs with barbs at the top, which can be firmly hooked and not easy to fall off, and you have done your duty for the spread of its seeds unconsciously.

"This is the stealing of clothing, its fruits and seeds have all kinds of thorns or hooks, once a person or animal comes into contact with it, those little ones with hooks and long thorns can firmly hang on to the animal's fur or human clothing, and spread far away." Chu Jiaqiang said that everyone will know less about stealing clothes.

As for the ghost needle grass, it is also a very headache. Its stems are slightly square, and the young stems are pubescent. The leaves are papery and brittle, often shrunken, broken, and often fall off. The top of the stem often has a flat disc-shaped receptacle, and the fruit is in the shape of a bundle of needles and has four edges. Sometimes with capitate inflorescences. As soon as a person or animal passes by, it will immediately entangle you and let you take them away.

"What about this? What's that? Same as a pod. At this time, a man suddenly asked.

Everyone looked over and saw that the guy had several pod-like things on his body, and the fruit was indeed like a pod, but it was small, and it was very easy to stick to clothes, and the fruit was easy to break into small pieces after sticking.

"I don't know what to call this outside. We call it sticky beans here. This kind of will be a little easier, go back and wash it with water, and it will be easily wiped off. It's more troublesome for you to do this, and if you move a little, it will break into many knots. Chu Jiaqiang said.

Plantae. Although plants have no mind, it does not mean that they do not have wisdom. In terms of seed dispersal, the wisdom of plants is fully reflected.

"These plants are amazing, too." One of Chu Jiaqiang's cousins said. When I used to read books, I knew that plant seeds are generally spread in four ways: animal spread, wind spread, water spread, and catapult spread.

"If you pay close attention to life, you will find that there are actually philosophies and things that exist around you. All have their own reasoning. Chu Jiaqiang said with a smile.

What his cousin thought in his heart, in Chu Jiaqiang's heart, was actually two kinds, nothing more than the effect of external force and internal force. And usually. It's all the action of an external force that takes the seeds away.

External forces mainly rely on wind, water, animals and humans to carry.

Seeds that are dispersed by the wind are usually lighter and can be suspended in the air and move everywhere with the wind. Some plants also grow some suitable seeds

It is a special structure that flies with the help of the wind. such as fine hairs on cotton and willow seeds; umbel-like crown hairs on dandelion fruits; Part of the pericarp and seed coat of the seeds of pine, maple, elm and other plants spread into wings; The fruit of the genus Sorrel has film-like air sacs and so on.

This phenomenon. It is all too common in rural areas. If Chu Jiaqiang took everyone to a big mangshan inside, it would be full of miscanthus grass and the like. This time. When the autumn wind sweeps away, the sky is full of snowflakes fluttering, which is spectacular.

"I used to go to the sea. Nan, I heard those people say that in the past, coconuts were spread by seawater. A tourist said.

Fruits and seeds that are dispersed by water usually refer to some plants that grow in aquatic and marshy areas. For example, the common lotus fruit is spread by water. The fruit of the lotus is inverted cone-shaped, and the fruit tissue is loose, light, and can float on the surface of the water, and flow far away with the water. The terrestrial plant coconut, also relies on water to disperse its seeds. The skin of the coconut is loose and rich in fiber, and it floats on the surface of the water. The coconut endocarp is thick, which protects the seeds from water.

The last one is carried by animals and humans. Some fruits deliberately grow some flesh to lure you to pick them, and by the way, they take their fruits with you. Take the little squirrel as an example, he usually likes to eat pine nuts, but in the autumn, he desperately moves the pine tower back, and naturally becomes a messenger.

Another type of seed dispersal is through its own strength. These plants usually have special devices for automatic sowing, such as spraying melons, impatiens, wild oats, drill grass and other plants.

When the seeds of the spray melon are ripe, the tissues containing the seeds turn into a viscous liquid that crowds the inside of the fruit and exerts strong pressure on the skin. When the fruit collides with the outside world or ripens and falls off, the peel suddenly splits, and the mucus and seeds are sprayed out at the same time, with a range of up to 6 meters.

The seeds of impatiens and marsh woody rhinoceros can be dispersed by the elasticity of the sudden cracking of the skin when the fruit ripens.

"The most interesting way to spread seeds is the seeds of wild oats that grow in wheat fields, which are able to 'crawl' into the soil on their own." Xu Hao is a plant expert and knows these things best.

The shell of the wild oat seed has a long mango, and the middle of the mango is bent in a knee shape, dividing the long mango into two parts: the miscanthus needle and the manganese pillar. The mango pillar is usually twisted, and it is very sensitive to humidity in the air. If the humidity of the air increases, the column will continue to absorb moisture from the air, become expanded, and rotate at the same time.

The needle also rotates under the drive of the mango pillar, so the bend between the mango needle and the mango pillar gradually straightens. If the needle and the pillar are straightened, and the tip of the needle is pressed against the soil, the seed will move forward a little; If the air dries out, the long mango rotates in the opposite direction and bends, returning to its original state. The seed is in the continuous stretching of the long mang, moving forward step by step.

In addition, the outer shell of the seed has dense short hairs, which act as a fixation and orientation as the seed "crawls" forward. As soon as the seed hits a crack in the process, it will drill into it, and it will take root and sprout the next year. Of course, oat seeds "crawl" quite slowly, advancing only 1 centimeter a day and night.

The furry monkey was also a little miserable, just like Tang Liye, he sat next to him and caught it. Although the little squirrel is also furry all over its body, it will be fine if people jump on the tree and do not come down.

"Huh! This time it's cool, right? Isn't it good to stay at home? I just have to run up the mountain. Chu Jiaqiang said.