Match the items in column (A) with a suitable answer from column (B):

Column (A)	Column (B)
A. Wheat	i. Derived protein
B. Haemoglobin	ii. Simple protein
C. Zein	iii. Conjugated protein
D. Peptones	iv. Gliadin

Correct option is D

Wheat contains gliadin, which is one of the main storage proteins found in the endosperm of wheat grain. Gliadin, along with glutenin, forms gluten. Therefore, A matches with iv.
Haemoglobin is a conjugated protein made up of the protein globin and the non-protein prosthetic group heme (which contains iron). Hence, B matches with iii.
Zein is a simple protein found in maize (corn). It is alcohol-soluble and belongs to the prolamin group of proteins. Therefore, C matches with ii.
Peptones are derived proteins, obtained through partial hydrolysis of proteins. They are used in microbial culture media. Thus, D matches with i.
Correct matching: A – iv (Gliadin) B – iii (Conjugated protein) C – ii (Simple protein) D – i (Derived protein)
Therefore, the correct answer is Option (d).