Problem 124 - Objective Biology for NEET

Question

Devil fish is called (a) Pearl oyster (b) Tusk shell (c) Sepia (d) Octopus

Step-by-Step Solution

Answer

The devil fish is commonly known as (d) Octopus.

Step 1: Understanding the Question

The question asks for a common name of 'Devil Fish'. This requires the knowledge of marine biology or a good memory of learnt facts.

Step 2: Identifying The Correct Answer

Given options are: \n(a) Pearl oyster \n(b) Tusk shell \n(c) Sepia \n(d) Octopus \nBased on widely accepted biological nomenclature, the term 'Devil Fish' commonly refers to (d) Octopus.

Key Concepts

Common Names of Marine Animals

In marine biology, common names are used to refer to marine animals in a way that is easily understood by people who might not be familiar with scientific terms. These names are generally derived from characteristics, behaviors, or appearances of the animals.

For example, the name "Devil Fish" is a colloquial term used to describe certain types of octopuses. The name likely stems from the octopus's ability to swiftly navigate the ocean with its tentacles, sometimes creating a cacophony of movement that could seem almost supernatural.

• Common names vary widely because they are often based on regional languages.
• Some common names are descriptive, while others are historical or based on myths.
• Using common names can make learning about marine life more accessible to everyone.

Common names help bridge the gap between scientific communities and the public, making fascinating marine life subjects more approachable.

Biological Nomenclature

Biological nomenclature is the formal system of naming living organisms. This system is crucial for ensuring scientists and learners understand exactly which organism is being referred to, no matter where they are in the world.

The modern system of naming living things is known as binomial nomenclature, which gives each species a unique two-part name: the genus and the species.

• Genus: This is the first part of the name and is always capitalized.
• Species: This is the second part of the name and is always lowercased.
• The names are usually in Latin or derived from Latin.

A well-known example is the octopus, which belongs to the genus Octopus. The species name depends on the specific type of octopus being referenced.

Unlike common names, which might vary, biological nomenclature remains consistent globally, preventing any confusion.

Octopus Identification

Identifying an octopus involves recognizing its unique characteristics. Octopuses are fascinating marine animals that are known for their intelligence, camouflage abilities, and flexible bodies.

Here are some key features that help in identifying an octopus:

• Tentacles: They have eight long arms, which are lined with suckers.
• Camouflage: They can change color and texture to blend into their surroundings.
• Movement: They use their arms and a siphon for quick bursts of speed.
  
  Besides these physical traits, octopuses also exhibit behaviors such as problem-solving skills in escaping close environments and using tools. Spotting an octopus in the wild or in aquariums can be a magical experience, and understanding these creatures adds depth to our appreciation of marine life.