Question: Which Animal Does Not Have A Heart?

Which animal has no blood?

Flatworms, nematodes, and cnidarians (jellyfish, sea anemones, and corals) do not have a circulatory system and thus do not have blood.

Their body cavity has no lining or fluid within it..

What animal has 32 brains?

LeechesLeeches have 32 brains. A leech’s internal structure is divided into 32 separate segments, and each of these segments has its own brain.

Do giraffes have 2 Hearts?

Three hearts, to be exact. There is a systemic (main) heart. Two lesser hearts pump blood to the gills where waste is discarded and oxygen is received.

What has 14 hearts but no organs?

The right answer to ‘What has 13 hearts, but no other organ’ Riddle is “A Deck of Cards”. This particular riddle is to check your out of the box thinking and creative skill.

What animal blood is closest to humans?

chimpanzeesEver since researchers sequenced the chimp genome in 2005, they have known that humans share about 99% of our DNA with chimpanzees, making them our closest living relatives.

Which animal does not have heart and brain?

jellyfishA jellyfish has no ears or eyes or nose and no brain or heart! They do not even have a head. Their body is almost totally made of water and is soft having no bones at all. Jellyfish are invertebrate animals because they do not have a spine or backbone.

What animal has 7 hearts?

Squids have three hearts; one main heart and two branchial hearts. Octopuses and squid have three hearts.

What animal has 8 hearts?

BarosaurusBut Barosaurus was a huge dinosaur which needed 8 hearts to circulate blood upto it’s head.

What animal has 3 hearts?

Pacific octopusLittle wonder, considering they are a bit unusual. The giant Pacific octopus has three hearts, nine brains and blue blood, making reality stranger than fiction. A central brain controls the nervous system.

Which animal has teeth in nose?

According to the study, the cat-size Pakasuchus kapilimai had relatively long legs and a nose similar to a dog’s. Perhaps weirdest of all, Pakasuchus—literally, “cat crocodile”—had mammal-like teeth that gave the crocodile a power previously unknown among reptiles: the ability to chew.

Which animal gives birth only once in lifetime?

octopusOriginally Answered: Which animal gives birth only once in a lifetime? A female octopus lays eggs only once in her life. She (usually) stops eating to care for them and dies either just before, or just after they hatch.

Is there any animal that does not have a heart?

There are also numerous animals with no hearts at all, including starfish, sea cucumbers and coral. Jellyfish can grow quite large, but they also don’t have hearts. Or brains. Or central nervous systems.

Which animal does not have eyes?

Mexican blind cavefishLiving with little food and oxygen in the dark, the Mexican blind cavefish had to get creative to survive. Few animals have ignored the warning “use it or lose it” as spectacularly as the Mexican blind cavefish (Astyanax mexicanus), which no longer has eyes.

Which animal has teeth in its stomach?

Doing so showed that the crab was grinding teeth in its stomach, creating the mysterious noise. The teeth in the crab stomach are known as gastric mills, and are quite common among crustaceans. Normally, they are used for chewing food, like teeth in most animals.

What animal has green blood?

skinksCredit: Photo by Chris Austin, LSU. Green blood is one of the most unusual characteristics in the animal kingdom, but it’s the hallmark of a group of lizards in New Guinea. Prasinohaema are green-blooded skinks, or a type of lizard.

Which animal has most brains?

The brain of the elephant is the largest contained by any living land-dwelling mammal. The adult male elephant’s brain can grow to be a whopping 12 pounds. As with the sperm whale, the brain accounts for relatively little of the elephant’s total body mass.

Do any animals have 3 eyes?

The Tuatara, a lizardlike reptile that lives only in New Zealand, has those three “eyes”. It belongs to a group of reptiles that once included many other creatures, but today, the Tuatara is the only surviving member of that group.

Which animal has longest lifespan?

Arctic whaleAlso known as the Arctic whale, the bowhead is by far the longest living mammal on Earth. The average age of captured whales is 60 to 70 years; however, examinations of whales discovered with ancient ivory spears still lodged in their flesh has resulted in estimated life spans of at least 100 years.