Question

Which is the vertebrate that has two-chambered heart?​

Answer 1

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→  The vertebrate that has two-chambered heart is present : Pisces

WHAT IS VERTEBRATE..???

• Kingdom: Animalia
• Scientific name: Vertebrata

These animals have a true vertebral column and internal skeleton, allowing a completely different distribution of muscle attachment points to be used for movement.

Vertebrates are bilaterally symmetrical, triploblastic, coelomic and segmented, with complex differentiation of body tissues and organs.

Vertebrate animals include humans.

In this true internal skeleton is present.

The animals having backbone and a skeleton are vertebrate.

VERTEBRATES ARE GROUPED INTO FIVE CLASSES WHICH ARE LISTED BELOW :

$\huge{\boxed{\sf{(i)\:PISCES}}}$

⇒ Body is streamlined and has fins and tail for swimming.

⇒ Skin is covered with scales.

⇒ Skeleton can be made of bone or cartilage.

⇒ Intake of oxygen is by gills.

⇒ Cold - blooded animals.

⇒ Two - Chambered heart is present.

⇒ Examples : Fishes like Rohu, Shark etc..

$\huge{\boxed{\sf{(ii)\:AMPHIBIA}}}$

⇒ They are adapted to live on both on land and water too.

⇒ Respiration is through either gills or lungs.

⇒ Three - Chambered heart is Present.

⇒ Examples : Frogs , Toads etc.

$\huge{\boxed{\sf{(iii)\:REPTILIA}}}$

⇒ These are crawling animals.

⇒ Skin is rough and modified.

⇒ Heart is three chambered in most, while four chambered in crocodiles.

⇒ Cold - blooded animals.

⇒ Examples : Lizards , Snakes etc.

$\huge{\boxed{\sf{(iv)\:AVES}}}$

⇒ Body is covered with feathers and forelimbs are modified for flying.

⇒ Breathing through lungs.

⇒ Warm - blooded animals.

⇒ Four chambered heart is present.

⇒ Examples :  Sparrow , Crow, Eagle , Parrot etc.

$\huge{\boxed{\sf{(v)\:MAMMALIA}}}$

⇒ Mammary glands are present which produce milk to nurture young ones.

⇒ Skin is covered with hairs.

⇒ Warm blooded animals.

⇒ Four Chambered heart is present.

⇒ Most animals are viviparous ( giving birth to live young ones ), some are oviparous( producing eggs ).

⇒ Examples : Man , Horse, Kangaroo, Lion etc.

Answer 2

fish

hope it helps you ☺️☺️