Question

give detail about chondricthes?
need content quality answer anyone here who gives me answer pls:)

Answer 1

$\textbf{Hey... mate here is yur ans...}$
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⏩ $\pink{Chondricthes}$ ⏪

⏩They are exclusively $\textbf{marine fishes.}$

⏩ Thier exoskeleton is made up of $\blue{Cartilage.}$

⏩ Thier Gills are $\green{oblique}$ and without $\pink{operculum.}$

⏩ Mouth is $\red{Ventral.}$

⏩ Cordal Fins are $\orange{Hetero - cercal.}$

⏩ Skin is tough and covered by $\textbf{small Placoid sclaes.}$

⏩ Jaws are $\textbf{heavy / massive}$ with $\blue{bacwardly}$ directed teeth.

⏩ Teeth are $\textbf{Modified Placoid scaled.}$

⏩ Thier Body is massive without $\green{Air bladder,}$ $\pink{Swim bladder.}$ So they have two Swim continuously To avoid $\red{Sinking.}$

⏩They have $\textbf{Bilobed liver.}$

⏩ They have $\textbf{Great power of Smelling.}$

⏩ They all are $\blue{Predators}$ or $\purple{Carnivores.}$

⏩ They are $\orange{Uricotelic.}$

⏩ They are $\red{Osmoconformers.}$

⏩ Males bear $\green{Pelvic-Claspers}$ which behave as penis To Transfer The Sperm into Female body.

⏩ $\textbf{Internal fertilization}$ occurs in Chondricthes.

⏩ They are Mostly $\blue{Viviparous.}$

⏩ They have common chamber in for opening of $\textbf{Digestive -tract,}$,$\green{Reproductive-tract,}$ $\red{Excretory -tract}$ which is called $\orange{Cloaca.}$

⏩ They have 5 - 7 pairs of $\purple{Oblique Gills.}$

⏩ In Chondricthes $\blue{Webberian}$ is absent.

Eg.➡

● $\textbf{Scoliodon}$➡ $\textbf{Dog Fish.}$

● $\textbf{Pristis}$➡ $\textbf{Saw fish.}$

● $\textbf{Trygon}$➡ $\textbf{Sting ray ( Poisnous).}$

● $\textbf{Charcarodon}$➡ $\textbf{Great white Shark.}$

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$\textbf{HOPE IT HELPS U}$✌

Answer 2

Howdy, buddy!

Chondrichthyes

• Chondrichthyes belongs to the pylum chordata and the kingdom of anamalia.

• They are also called as the cartilaginous fishes and body is streamlined.

• They are mostly cold-blooded.

• They have paired fins and nostrils.

• They have two-chambered hearts.

• They are basically marine fishes.

• Mouth is located on ventral side of the body.

examples of chondrichthyes are Sharks, sawfish,batoids and stingray etc,.

• Hope it helps!