Which type of lipid forms a protective layer on the outer surface of the aerial parts of plants?

Which organic substance has a high energy value?

What type of fatty acids are present in vegetable ghee and coconut oil,respectively?

Fats serve as the best storage of spare energy because

Beeswax is soluble in which of the following?

Following are the statements with reference to 'lipids'.
$(a)$ Lipids having only single bonds are called unsaturated fatty acids.
$(b)$ Lecithin is a phospholipid.
$(c)$ Trihydroxy propane is glycerol.
$(d)$ Palmitic acid has $20$ carbon atoms including carboxyl carbon.
$(e)$ Arachidonic acid has $16$ carbon atoms.
Choose the correct answer from the options given below.