Which one of the following pairs of structure | vedclass

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(B) The correct option is $b$.Cartilage is an avascular connective tissue, meaning it lacks a direct blood supply. Nutrients and oxygen reach the chon

Vedclass · Accepted Answer

$b$

Vedclass · Answer

(B) The correct option is $b$.Cartilage is an avascular connective tissue, meaning it lacks a direct blood supply. Nutrients and oxygen reach the chondrocytes via diffusion from the surrounding perichondrium.Similarly, the cornea of the eye is also avascular to maintain its transparency, receiving oxygen directly from the atmosphere and nutrients from the aqueous humor.Analysis of other options:$a$. Only the tibia articulates with the femur to form the knee joint; the fibula does not.$c$. The shoulder is a ball and socket joint, but the elbow is a hinge joint.$d$. In an adult human, there are $8$ premolars and $12$ molars, totaling $20$ teeth, but they do not all have $3$ roots (premolars usually have $1$ or $2$ roots).

Description	Structures
$a$. Tibia and fibula	Both form parts of knee joint
$b$. Cartilage and cornea	No blood supply but do require oxygen for respiratory need
$c$. Shoulder joint and elbow joint	Ball and socket type of joint
$d$. Premolars and molars	$20$ in all and $3$ rooted

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