A: In Aves and Mammals, the heart is four-cha | vedclass

Name: Exam Paper Generator | JEE NEET Paper Generator | Vedclass
Brand: Vedclass
Rating: 5 (35 reviews)

Question

(B) Statement $A$ is true: Both $Aves$ (birds) and $Mammals$ possess a four-chambered heart, consisting of two atria and two ventricles, which prevent

Vedclass · Accepted Answer

$A$ and $R$ are both true, but $R$ is not the correct explanation of $A$.

Vedclass · Answer

(B) Statement $A$ is true: Both $Aves$ (birds) and $Mammals$ possess a four-chambered heart, consisting of two atria and two ventricles, which prevents the mixing of oxygenated and deoxygenated blood.Statement $R$ is true: In $Mammals$, the systemic aortic arch curves to the left (left aortic arch), whereas in $Aves$, it curves to the right (right aortic arch).However, the fact that the aortic arch curves to the left in mammals is an anatomical characteristic of mammals, but it does not explain why the heart is four-chambered. Therefore, $R$ is not the correct explanation of $A$.

$A$: In $Aves$ and $Mammals$, the heart is four-chambered.
$R$: In $Mammals$, the aortic arch curves to the left.

Similar Questions

Which of the following sets of animals is correctly matched with its respective phylum/class?

Which one of the following groups of animals is bilaterally symmetrical and triploblastic?

Give the names of the following:
$(a)$ $A$ limbless animal
$(b)$ $A$ cold-blooded animal
$(c)$ $A$ warm-blooded animal
$(d)$ An animal possessing dry and cornified skin
$(e)$ An animal having a canal system and spicules
$(f)$ An animal with cnidoblasts

Select the correct statement.

How many of the following phyla exhibit diploblastic and tissue-level organization?
Porifera,Coelenterata (Cnidaria),Ctenophora,Platyhelminthes,Aschelminthes

Vedclass Test Series

Exam Paper Generator

Online Exam Module

$A$: In $Aves$ and $Mammals$, the heart is four-chambered.$R$: In $Mammals$, the aortic arch curves to the left.