Fill `a+(b+c)=(.....+......)+c`

Pollens outer layer is called ... A .... This is made up of ..B .... This is absent on the ... C .... Fill in the blanks A, B and C.

A. Proteins are polymer of…...a…… B. Lipids are not strictly ……b….. C. Polysaccharide are long chains of ……c……. D. Nucleic acid is a polymer of .......d……. Fill in the blanks

Pipes A, B and C together can fill a tank in 4 hours. Pipes A and B together can fill the tank in 9 hours. If pipes A, B and C are opened simultaneously, and after 3 hours, pipes A and B are closed, then how many hours will C alone require to fill the tank? (a)1.5 (b)1.8 (c)2 (d)2.25

Fill in the boxes : ( a ) (b) (c)

Analyze the picture given below and fill the labeling (a) (b) and (c) .