What is the secretion of the sebaceous gland?

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

What are the primary inorganic components of bone?

Analogy type questions:
$(1)$ During muscle contraction,the $A$-band does not change in length.
$(2)$ The $8^{th}$,$9^{th}$,and $10^{th}$ pairs of ribs are attached to the $7^{th}$ pair of ribs with the help of hyaline cartilage. Identify the terms.

Locomotion requires a perfectly coordinated activity of:

Write the difference between (Any two):
$(a)$ Actin and Myosin
$(b)$ Red and White muscle fibres
$(c)$ Pectoral and Pelvic girdle