What is a dispute? Detailed answer

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What is a dispute? Detailed answer

Big encyclopedia for children and adults

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What is a dispute?

A flowering plant reproduces by seeds. Plants that do not have flowers reproduce by spores. Spores are unicellular organisms. The spore is invisible to the eye and can only be seen under a microscope. Spores are in the air around us. So when food is left uncovered and mold forms on it, we know where it came from. Some types of spores that are in the air get on food and begin to grow.

Mushrooms, ferns and mosses reproduce by spores. Seaweeds also form spores. In the plant, spores develop in sporangia. In the fungus, the sporangia is located inside the hymenial plates under the mushroom cap. In mosses, spores develop in a capsule at the top of the stem. When the spores mature, they are sown. The wind carries them far. The spores of aquatic plants, such as algae, spread out in all directions. They have tiny tails called cilia. These spores are called zoospores and when they mature they quickly swim away from the plant.

After a short period of time, they stop and lose their tails. Then they begin to grow into new plants. Some spores reproduce by cell division. They develop in a growth inside the cell. These growths grow on the cell wall, and a new plant grows from them. Such reproduction is called asexual, since it does not require separation into male and female cells. Other spores have male and female cells. For a new plant to appear, the male and female cells must fuse and fertilize. In some plants, alternation of generations occurs: unisexual spores in one generation, and bisexual in the next.

Author: Likum A.

Random interesting fact from the Great Encyclopedia:

Is it true that centipedes have XNUMX legs?

Have you ever turned over a flat stone or a rotten log, under which you could see small worm-like creatures quickly running away from the light? Most likely they were centipedes.

Naturally, there was no way for you to count all their legs to see if there really were hundreds. Some of these creatures have hundreds of legs, others even more. And some have only 30 legs.

Although it may seem surprising to us how this living creature can have so many legs, they are not as rare in nature as one might think. There is a whole group of insects that are called "thousands". Incidentally, centipedes are one of the oldest living creatures.

According to scientists, centipedes have existed for millions of years. While many people have difficulty walking on their two legs, centipedes manage their hundred legs without much difficulty. Their legs are arranged in pairs, and each pair grows from a segment of the centipede's body, which is flat and equipped with many articulations. In the next section of the centipede's head are two long antennae and two venomous hooks.

The venom of most centipedes is harmless to humans, but there are some species in the tropics, 20-25 centimeters long, whose bites can be dangerous. Such centipedes are known for being able to kill even small birds!

Millipedes reproduce by laying eggs in open areas. Some of them are born already with a full set of legs. Others are born with seven pairs, and the rest of the legs are added each time they change skin until they are fully grown. Centipedes come out at night to search for food, and during the day they hide under rocks or rotten trees.

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