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Tiger. Because the tiger is a very ferocious animal, and it is not inferior to the lion bear in the fight, then he has such a ferocious combat power, which must be inseparable from the fact that he has a strong heart.
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Animals with three hearts are horseshoe crabs, octopuses, and cuttlefish.
Three-hearted animals are very rare in nature, this structure is very peculiar, and the animals with three hearts are now known to be horseshoe crabs, octopuses and cuttlefish.
LAL:
Horseshoe crabs have three hearts and contain a lot of copper ions in their blood.
So it's blue. The horseshoe crab has three hearts, and it has a strong circulatory system.
Carbon dioxide in the horseshoe crab's blood when the gill heart receives venous blood from the periphery and transports it to the gills.
It will be replaced by oxygen. The blue color that people see is the color of vanadium in the horseshoe crab's blood.
Octopus:
Octopuses are called "alien creatures" because of their special body structure. Each octopus has three hearts, one of which contributes to the circulation of blood throughout the body, and the other two smaller hearts supply blood to the gills. The octopus has three hearts that provide more oxygen and energy to the brain and limbs.
Cuttlefish:
Cuttlefish have three hearts, two of which are in the gills and the other one that supplies blood to the rest of the body. Moreover, the blood supplied by the heart of the cuttlefish is not red like us, but blue, because there is no hemoglobin in their blood.
In its place is the copper protein.
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The animal with eight hearts is the balorosaurusBalorosaurus, also known as heavy dragon, is not only huge, but also has a neck of more than 9 meters, almost the tallest dinosaur in North America, but the long neck of the balorosaurus adds a burden to it.
Scientists have calculated that a six-ton heart is needed to get blood to the head at the top of the neck, but if the heart is really that big, the heart will beat very slowly, so that the blood sent to the neck is likely to flow back down before the next heartbeat, so some people speculate that this dragon has 8 hearts.
Baroron Introduction:
Balorosaurus is a member of the sauropod family of dinosaurs, mainly living from the late Jurassic to the Cretaceous period, and its fossils are mainly distributed in the United States and Tanzania in Africa.
The length of the body of the adult Balorosaurus is about 25 meters, the estimated weight is about 20 tons, and the neck of the Balorosaurus is more than ten meters long, although this is not uncommon in the long neck sauropod dinosaur family, but the proportion of the neck to the body is very large, there are a total of 16 neck bones on the neck of the Balorosaurus, and the middle of the cervical vertebrae is empty, which can reduce the weight of the long neck.
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1. What kind of earthworm is the animal with the most hearts in the world? Network data shows that earthworms are invertebrates are more common bait, with 5 to 10 hearts in the body, which is why earthworms can still live after being cut into several sections, but if they are cut into too many segments, earthworms will also die, now there are more than 200 kinds of earthworms in China, there are more than 3,000 kinds of earthworms in the world, and now there are many artificially bred earthworms, earthworms contain a lot of protein, and many amino acids in protein are necessary for the growth and development of livestock and fish. It is said that in some areas, if you want to change the soil, you will also use earthworms to improve it.
2. An octopus of several hearted animals. Octopus mollusks with 3 hearts. One of them is the body heart, which functions similarly to the heart of other animals, providing blood supply to the body.
The other two hearts are called gill hearts, the function of these two hearts is similar to that of human liver, playing the function of metabolism and excretion, the octopus has 3 hearts and can change color anywhere **", it is a stealth on the bottom of the sea, the octopus has 500 million more neurons than humans, and the IQ is very high, but the octopus has a very short lifespan, and sometimes it is eaten by other creatures before it has evolved;
3. The squid of several heart-like animals. Squid is a mollusk, unlike other fish, squid is an animal with 3 hearts, and the blood of squid is blue, using the pigment cells on the surface to change the color, squid is mainly distributed in tropical and temperate shallow seas, generally speaking of squid Many people think that squid is a fish rather than an animal, it has a slender body with a sucker at the front end, it is a mollusk that does live in the ocean, squid is a precious seafood with very high nutritional value, some people eat squid raw, The squid in the mouth feels like it's still bouncing;
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The animal that has two hearts alive in the world is the earthworm. Earthworms are rich in nutrition, rapid reproduction, miscellaneous food, high yield of artificial breeding, and good economic benefits.
Earthworms can be used as a valuable medicine** for many diseases, and can also be used as high-protein food and feed.
Earthworms:
The body is segmented but not divided, the verrucous feet are vestigial, and the body surface is bristled. Hermaphroditic, 1-2 pairs of gonads, reproductive ducts of body luminal duct origin, rings appear on the body surface when sexually mature, mutual insemination can occur during mating, eggs are laid in the rings, and egg cocoons are formed after falling off, and develop directly.
The bristles are simple, 8, sometimes many, arranged in a ring, 1-2 pairs of sperm nests, usually at 10-11 nodes, male reproductive pores one pair, located on 2 or more somites after the posterior sperm nest, i.e. after 14 nodes. A pair of ovaries, located in the 13th segment, with a thicker annular band and less yolk.
Earthworms dig burrows to loosen the soil, decompose organic matter, and create good conditions for the growth and reproduction of soil microorganisms.
In terms of soil improvement, elimination of pollution, protection of the ecological environment, it plays a special role in material cycle, biodiversity, etc., and many countries use earthworms to treat domestic waste, organic waste and purify sewage.
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Some of the lower animals, such as:AnnelidsEarthworms, for example, can have multiple hearts.
Take the more common ringed earthworm as an example, this earthworm has a thick blood vessel on the back and abdomen of the body, and four pairs of enlarged ring blood vessels are connected in the middle, and these ring blood vessels can beat rhythmically.
By beating, blood can flow throughout the body. People call these four pairs of ring blood vessels "four pairs of hearts".
The heart of an earthworm is not the same as the heart of a higher animal, it is actually a bulged annular blood vessel.
Habits of earthworms:
Generally speaking, the activity temperature of earthworms is 5-30, 0-5 enters a dormant state, dies below 0, the optimal temperature is about 20-27, and it is also the most suitable temperature for cocoon eggs, and when it is above 32, it stops growing and dies above 40.
Therefore, earthworm breeding: in summer and autumn, it is necessary to build a shade shed to cool down (the mulberry garden has natural shade conditions, but the mulberry tree still needs to be temporarily covered with shade after summer felling to germination and growth before it is closed), and in winter, the shed should be heated by fire (the silkworm room's own equipment can be used) or the mulberry garden should be covered with wheat grass to heat the temperature, so as to facilitate the normal growth and reproduction of earthworms.
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AscarisHookworm abalone, jade snail, fragrant snail, red snail, east snail, mud snail, cockle,Mussels, scallops, clams, oysters, clams, clams, clams, clamsSquidand other animals do not have hearts。Protozoa are single-celled organisms and do not have hearts. Before the phylum Chordates, there were no hearts, and only after cephalochordates did animals develop hearts such as fish, amphibians, etc.
There are no heart animals
Animals are the general term for all living things in the animal kingdom. The animal kingdom is divided into 35 phyla, more than 70 classes, and more than 350 orders, totaling more than 1.5 million different species.
From the classification of the animal kingdom, only the animals under the total of 5 phyla included after the phylum Annelida have hearts, and the animals are more advanced, and its heart is closer to the heart of humans, so it can be seen that the animals without hearts account for the vast majority.
Amoebae, radiolaria, flagellates, sarpods, trumpets, rhomboids, composed of about 20 to 30 cells, have no heart. Spongienic enterozoa.
Although the cells have begun to differentiate, they have not formed tissues and organs, and have a primitive nervous system.
Hydra. Jellyfish flat animal phylum, the most primitive three-germ animal without body cavity, has a primitive excretory system and a ladder-like nervous system. Planarians, flukes, tapeworms.
Phylum Nematode animals. Wheat nematode rotifers.
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