NEETZoologyLocomotion and Movement
Given below are two statements: one is labelled as Assertion (A) and the other is labelled as Reason (R). Assertion (A): The total number of bones in a human hindlimb is exactly equal to the total number of bones in a forelimb. Reason (R): The number of ankle bones (tarsals) in a hindlimb is equal to the number of wrist bones (carpals) in a forelimb. In the light of the above statements, choose the correct answer fro
Options
- ABoth (A) and (R) are true and (R) is the correct explanation of (A)
- B(A) is true but (R) is false
- CBoth (A) and (R) are true but (R) is not the correct explanation of (A)
- D(A) is false but (R) is true
Correct answer
B. (A) is true but (R) is false
Step-by-step solution
Each human forelimb and hindlimb is made of 30 bones, making Assertion (A) true. The bones of the forelimb include humerus (1), radius (1), ulna (1), carpals (8), metacarpals (5), and phalanges (14). The bones of the hindlimb include femur (1), tibia (1), fibula (1), patella (1), tarsals (7), metatarsals (5), and phalanges (14). The number of ankle bones or tarsals in a hindlimb is 7, whereas the number of wrist bones or carpals in a forelimb is 8. Therefore, Reason (R) is false. Answer: (A) is true but (R) is fals