With reference to Octopus, consider the following statements: It is a ...
**Statement 1: It is a marine mollusk belongs to the member of the class Cephalopoda.**
This statement is correct. Octopus is indeed a marine mollusk and belongs to the class Cephalopoda. Cephalopods are a group of marine animals that also include squids and cuttlefish. These animals have a distinct head and a set of arms or tentacles surrounding their mouth.
**Statement 2: The skin of octopus contains cells called chromatophores that allow them to change color and pattern.**
This statement is also correct. Octopuses have a remarkable ability to change the color and pattern of their skin. This ability is due to specialized cells called chromatophores that are present in their skin. Chromatophores contain pigments, such as melanin or carotenoids, which can be expanded or contracted to display different colors. By controlling the expansion and contraction of these cells, octopuses can rapidly change their appearance to match their surroundings, communicate with other octopuses, or display warning signals.
**Explanation:**
Both statements are correct. Octopuses are marine mollusks belonging to the class Cephalopoda. They have a unique ability to change the color and pattern of their skin, thanks to specialized cells called chromatophores. These cells allow them to blend into their surroundings, communicate with other octopuses, or display warning signals to potential predators.
The ability to change color and pattern is an important adaptation for octopuses as it helps them camouflage and avoid predation. It also allows them to communicate with other members of their species and display various behaviors. Octopuses can change their appearance by expanding or contracting the chromatophores in their skin, which alters the distribution of pigments and results in different colors and patterns.
This ability to change color and pattern is not only fascinating but also crucial for the survival of octopuses in their marine environment. It gives them a significant advantage in hunting, escaping from predators, and interacting with their surroundings and other octopuses.
In conclusion, both statements are correct. Octopuses are marine mollusks belonging to the class Cephalopoda, and they have the ability to change the color and pattern of their skin using specialized cells called chromatophores.
With reference to Octopus, consider the following statements: It is a ...
Recently, marine scientists have discovered a new Octopus nursery off the coast of Costa Rica.
- It is a marine mollusk and a member of the class Cephalopoda, more commonly called cephalopods.
- Cephalopoda means “head foot” in Greek, and in this class of organisms the head and feet are merged.
- A ring of eight equally-long arms surround the head. They use their arms to "walk" on seafloor.
- The undersides of the arms are covered with suction cups that are very sensitive to touch and taste.
- The sack-like body is perched atop the head, which has two complex and sensitive eyes, while the mouth is on the underside.
- They have three functioning hearts.
- Two of the hearts work exclusively to move blood to the gills, while the third pumps blood through the rest of the body.
- Their blood is copper-based which is more efficient at transporting oxygen at low temperatures and makes their blood blue in color.
- They are solitary creatures excellent at camouflaging and concealing themselves.
- They are about 90 percent muscle, and because they lack bones, they can fit through very small spaces.
- Their skin contains cells called chromatophores that allow the octopus to change color and pattern.
- They are found in every ocean of the world.
Hence both statements are correct.