Which animal does not have a brain?
SpongesSponge Brains Almost all animals have a brain, but there are a few exceptions.
There is one organism that has no brain or nervous tissue of any kind: the sponge.
Sponges are simple animals, surviving on the sea floor by taking nutrients into their porous bodies..
What animal has 32 brains?
Leeches2. Leeches have 32 brains. A leech’s internal structure is divided into 32 separate segments, and each of these segments has its own brain. In addition to that, every leech has nine pairs of testes — but that’s another post for another day.
How do animals survive without a brain?
Many of the creatures without brains contain simple mechanisms that allow them to do all the things they need to do to survive. Jellyfish, for example, have a system of nerve cells, known as a neural net, throughout their bodies. Sea anemones have a similar system. Sea stars, on the other hand, don’t have a neural net.
Which animal blood is black?
The Peanut Worms are marine animals with dark purple coloured blood and can appear almost black. The purple color is due to the protein called Hemerythrin.
What animal has 7 hearts?
Hagfish. Who knew such a nasty creature could have so many hearts? The hagfish has four of them, one main three-chambered systematic heart and three accessory pumps.
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.