Characteristics of Scoliodon Quiz and Flashcards

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Questions and Answers

What is the systematic position of scoliodon (Dog fish)?

Phylum: Chordata, Subphylum: Gnathostomata, Superclass: Pisces, Class: Chodrichthyes, Order: Squaliformes, Family: Carcarinidae, Genus: Scoliodon, Species: sorrakowah.

Where is scoliodon widely distributed?

Widely distributed in the Indian, Pacific, West Indies, eastern coast of South America, and Atlantic Ocean.

What are the external features of scoliodon?

Highly streamlined body, elongated and spindle-shaped, partially laterally compressed, head dorsoventrally flattened, pointed rostrum (snout), covered by placoid scales, and dark grey from dorsal and pale white ventral in color.

What is the habitat and habit of scoliodon?

Habitat: marine, Habit: carnivorous and predacious, feeding on crabs, lobsters, worms, and fishes. Signup and view all the answers

How does scoliodon reproduce?

It has internal fertilization, direct development, and is viviparous, giving birth to living young once. Signup and view all the answers

What are the taxonomic classification levels of scoliodon?

Phylum: Chordata, Subphylum: Gnathostomata, Superclass: Pisces, Class: Chodrichthyes, Order: Squaliformes, Family: Carcarinidae, Genus: Scoliodon, Species: sorrakowah Signup and view all the answers

Describe the body shape of scoliodon.

Highly streamlined, elongated, spindle-shaped, partially laterally compressed, head dorsoventrally flattened, and tail slightly bent upwards. Signup and view all the answers

How does scoliodon give birth?

Scoliodon is viviparous, giving birth to living young ones. Signup and view all the answers

What is the coloration of scoliodon?

Dark grey from dorsal and pale white ventral. Signup and view all the answers

How many unpaired median fins does scoliodon have?

Scoliodon has 2 dorsal, 1 caudal, and 1 ventral unpaired median fins. Signup and view all the answers

What are the internal fertilization and development processes of scoliodon?

Internal fertilization and direct development. Signup and view all the answers

Describe the body characteristics of scoliodon.

Highly streamlined, elongated, spindle-shaped, partially laterally compressed, with a pointed rostrum and covered by placoid scales. Signup and view all the answers

How is the tail of scoliodon positioned?

Slightly bent upwards. Signup and view all the answers

What is the coloration of scoliodon's dorsal and ventral sides?

Dark grey dorsal, pale white ventral. Signup and view all the answers

How are the fins of scoliodon supported and what types of median and lateral fins does it have?

Fins are posteriorly directed and supported by cartilaginous rods and horny finrays. It has 2 dorsal, 1 caudal, and 1 ventral unpaired median fins, and paired lateral fins. Signup and view all the answers

Study Notes

Systematic Position of Scoliodon

Belongs to Phylum Chordata, characterized by having a notochord.
Subphylum is Gnathostomata, indicating jawed vertebrates.
Falls under Superclass Pisces, which includes fish species.
Class Chondrichthyes, representing cartilaginous fish.
Order Squaliformes, recognized for dogfish sharks.
Family Carcarinidae, a group of sharks known for their predation.
Genus Scoliodon, specifically referring to species within dogfish.
Species identified as S. sorrakowah.

Distribution and Habitat

Scoliodon has a wide distribution, found in the Indian Ocean, Pacific Ocean, West Indies, and on the eastern coast of South America, as well as the Atlantic Ocean.
Primarily inhabits marine environments.

Behavior and Reproduction

Exhibits carnivorous and predatory behavior, preying on crustaceans, worms, and fish.
Reproductive method is internal fertilization with direct development.
Viviparous, giving birth to live young.

External Features

Body is streamlined, elongated, and spindle-shaped for efficient swimming.
A fully grown Scoliodon measures about 60 cm in length.
Body is partially laterally compressed with a dorsoventrally flattened head.
Features a pointed rostrum (snout).
Tail is slightly bent upwards.
Body covered with placoid scales providing protection.
Coloration shows dark grey dorsal (top) and pale white ventral (bottom) sides.

Fins

Possesses posteriorly directed fins supported by cartilaginous rods and horny fin rays.
Unpaired median fins include 2 dorsal fins, 1 caudal (tail) fin, and 1 ventral fin.
Includes paired lateral fins for stabilization and movement.

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Description

Test your knowledge of the detailed study of the Scoliodon (Dogfish) with this quiz. Explore its systematic position, habitat, and feeding habits while learning about its phylum, class, order, and species. Dive into the world of this widely distributed marine species found in the Indian, Pacific, West Indies, Eastern coast of South America, and Atlantic Ocean.

Scoliodon (Dogfish) Quiz

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