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Octopuses are marine animals that are mostly popular because of their eight arms and bulbous heads. Octopuses are usually extremely intellectual and have been found to use several tools many animals do not know the usage of. There are many intriguing facts about this marine animal, some of which usually always amazes people.
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Key Takeaways: Octopuses, arms, heads, habitat, blue blood
What is Octopuses?
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Octopuses are eight armed marine animals that have fat, bulbous heads, and are usually categorised under Cephalopod organisms. Octopuses have a pear-shaped, oval head that appears to be slightly separated from its body. These mysteriously interesting creatures have eight appendages and round, compound eyes. Their arms are connected by a form of tissue, usually referred to as the skirt. These invertebrates have a typical squid-like body having an unusually high intelligence. A mantle, which is located behind the octopus’ head, is a form of muscular fatty element that is responsible to cover their respiratory and reproductive organs.
Octopuses are marine creatures, usually found in oceans around the world. Most octopuses have been found to be pelagic, which means they live very close to the water’s surface in places that are crevices, shells, or reefs. There are several species of octopuses that commonly spend most of their time living inside their dens, which are usually tiny holes or nooks in rocks. Octopuses are solitary animals that are very territorial and hunt during the night.
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Interesting Facts about Octopuses
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There are several interesting facts about an octopus that can amaze people. Here are some to know:
- Octopuses have three hearts – one is responsible to pump blood through all the organs, while the remaining two commonly pumps blood via its gills.
- They also have nine brains and millions of neurons.
- One of the most interesting facts about octopuses is that they have blue blood. The reason behind why it has blue blood is because it produces a copper-based protein known as hemocyanin.
- Octopuses are capable of camouflaging, which is an effect of matching the body colour with the surroundings to protect themselves from predators.
- Octopuses have a squishy body which allows them to squeeze through any inescapable gaps and corners between rocks.
- The tentacles of octopuses have neurons inside them which enables their arms to brainstorm through several ideas, helping find and gather food whenever required.
- Usually after fertilization, female octopuses are found to stop eating, allowing their bodies to undergo a phenomenon known as “cellular suicide.”
- The tentacles of octopuses are typically lined with suckers that can move on their own. They commonly use their suckers to smell, touch, and sense through objects that are present around their surrounding body.
There are several other facts that allow octopuses to be one of the most mysteriously intriguing animals roaming the ocean floor.
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Points to Remember
Following are some important points:
- Octopuses are marine animals, living on the ocean floor, that have a squid-like body and occupy eight arms and an oval, bulbous head.
- Octopuses have millions of neurons inside them, and about one-third of the whole is situated in their tentacles.
- One of the most unusual facts about octopuses is that they have three hearts.
- By the help of a copper-based substance called hemocyanin, Octopuses can produce blue blood, unlike any other animal.
- Octopuses are solitary animals that live on the ocean floor, inside dens which are usually inside small holes or crevices between or inside rocks and corals.
Sample Questions
Ques: Define the species, Octopuses. (2 marks)
Ques: Explain the life cycle of octopuses. (4 marks)
- The Egg: Octopuses, after fertilisation, lay eggs under rocks or inside tiny holes situated upon rocks or corals.
- The Larvae: The Larval octopuses, about after eight weeks, hatch from their eggs. The larval octopods look closely similar to adult octopuses because of their almost identical shape and size. The primary food source of larval octopuses generally come in the form of larval lobsters, larval crabs and more.
- The Juvenile: By this stage, octopuses begin evolving at a faster pace. Octopuses usually have a very short lifespan which is one reason why they grow rapidly.
- The Adult: By this stage, the octopuses eventually become mature and are ready to mature.
Ques: Name three major interesting facts about octopuses. (3 marks)
- Octopuses have three hearts – one of the three is responsible to pump blood through all the organs, while the remaining two pump blood via its gills.
- One of the most intriguing facts about octopuses is that they have blue blood. They have blue blood because octopuses are known to produce a copper-based protein known as hemocyanin.
- Octopuses are usually able to camouflage. Camouflage is an effect of matching the body colour with the surroundings to protect themselves from predators.
Ques: Why do Octopuses have blue blood? (2 marks)
Ques: Name three major characteristics of an octopus. (2 marks)
- Besides their size differences, every octopus has eight tentacles that are usually fully covered by an element called sucker entirely on the undersides.
- Octopuses are usually found in tropical and temperate region water, living inside typical dents formed on rocks or corals to protect themselves from predators.
- The lifespan of an average octopus is sadly extremely short. It is roughly about six months.
Ques: What is Cellular Suicide in Octopuses? (2 marks)
Ques: Why do Octopuses camouflage? (2 marks)
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