Question

Read the given statements and select the correct option.
(a) Sustained muscle contraction due to lack of relaxation between successive stimuliis called tetanus.
(b) The vertebral column of all mammals have seven cervical vertebrae.
(c) Production of erythrocytes is a function of skeletal system.

• A. (a) and (b) are true but (c) is false
• B. (b) and (c) are true but (a) is false
• C. (a) and (c) are true but (b) is false
• D. (a), (b) and (c) are true

Answer 1

The correct option is C (a) and (c) are true but (b) is false

Answer (3)
Most mammals have seven cervical vertebrae except the manatee with six, the two toed sloth with $5$ or $6$ vertebrae and the three toed sloth with $9$ cervical vertebrae.