secondary cell wall is made up of:

(A) Cellulose and Pectin
(B) Cellulose and Protein
(C) Cellulose and Lignin
(D) Lignin and Pectin

Answer: (C) Cellulose and Lignin
secondary cell wall is made up of cellulose and lignin.

Saltiest water lake of the world:

(A) Don Juan Pond
(B) Victoria Lake
(C) Huron Lake
(D) None of these

Answer: (A) Don Juan Pond
Don Juan Pond of Antarctica is the saltiest water lake of the world with more than 40% salinity.