Glycoprotein-They are conjugated protein. They have sugars as their prosthetic group.
Fibrous protein-They have linear thread like molecules. They are-structural material for animal tissue e.g., keratin, hair,nail etc.
Globular protein-Polypeptide chains of these proteins coil around itself to give protein molecule spheroidal shape e.g., all enzymes, antibodies, haemoglobin, albumim etc.
Hence, haemoglobin is an example of globular protein.