What is an aphid? Detailed answer

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What is an aphid? Detailed answer

Big encyclopedia for children and adults

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What is an aphid?

Aphids (or, in other words, plant lice) are green and brownish insects no more than 6 mm in length. Aphids multiply so quickly that if they were not destroyed by natural enemies, they would have eaten almost all the plants on Earth!

Aphids can be found on the leaves, stems, roots of all kinds of plants. These insects often cause significant damage to fruit trees, flowers, vegetables and crops. They have an unusually strong mouth or proboscis protruding from a tiny head. With this proboscis, the aphid pierces the surface of the leaf and sucks out its juices, after which the plant withers and, most likely, dies.

The most curious detail in the life of aphids is that the aphid's body secretes a sweet liquid called "honeydew", and ants like to drink this liquid. Ants capture aphids and take care of them like a farmer takes care of cows.

Having dragged the aphids into their nest, the ants supply them with a sufficient amount of greenery and carefully protect them. When an ant wants to milk its "cow", it strokes the aphid's abdomen with its antennae, tiny drops of honeydew stand out on the edge of the abdomen. These drops are drunk by the ant. Man, on the other hand, has no special reason to protect aphids, so he often destroys them by spraying them with chemicals.

Author: Likum A.

Random interesting fact from the Great Encyclopedia:

How do we taste food?

Taste is produced by the action of various soluble substances on the taste buds. If the atoms of a substance cannot move freely enough, we will not taste the substance. This is why we can only taste soluble substances. In animals living in water, taste buds are located on the surface of the body. For example, fish can taste with their tail fins!

In animals living on the earth's surface, taste buds are concentrated mainly in the mouth, while in humans they are only on the tongue. If you look at your tongue in a mirror, you will see that it is covered with small tubercles - papillae. Taste buds are located on the walls of these papillae.

The number of taste buds in animals depends on individual characteristics. For example, whales swallow whole schools of fish without chewing because they have very few or no taste buds. A pig has 5500, a cow has 35, and an antelope has 000 taste buds. A person has not so many of them - only 50.

On the human tongue, taste buds are distributed in different zones. Each zone perceives a certain taste. The back of the tongue is more susceptible to bitter. The sides are sensitive to sour and salty, and the tip of the tongue to sweet tastes. There are no taste buds in the center of the tongue. There is no taste at all in this place. The sense of smell plays an important role in the taste process. "Tasty or tasteless" - mostly determines our sense of smell. It's no wonder we find foods like coffee, tea, apples, oranges, and lemons delicious.

For example, when we drink coffee, we first experience warmth, then bitterness, and finally sweetness (if sugar has been added). We can say that coffee is really delicious only when its smell, having passed through the larynx and nose, will give a signal to our brain. If you pinch your nose with a clothes dryer, not only will you not be able to tell the taste of coffee, but you won't even be able to tell the difference between two completely different foods you eat or drink!

Test your knowledge! Did you know...

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