When an electric shock is given to the leg of a pithed frog,what happens?

Which one of the following pairs of structures is correctly matched with their description?

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

Bones act as a reservoir of which mineral salts?

Analogy type questions:
$(1)$ All locomotion : movement :: all movement : ...........
$(2)$ Cilia in trachea : help in removing dust particles :: Ciliated cells of female reproductive system : .........

Which of the following is not a function of the skeletal system?

Which of the following sets of characters are applicable in the metamorphosis of the tadpole larva of frogs and toads?