Roopa is an improved variety of

Answer: Option B

Roopa is an improved variety of walnuts.
More than 95 percent of walnut plantations in India are of seedling origin and are being grown since ancient times. Being a cross-pollinated crop each growing plant in walnut is a different genotype.
The varieties grown in India are mostly selected from indigenous materials or introduced from abroad.
Roopa variety with high shelling percentage, better kernel quality, and a soft shell has been identified and thus released for cultivation.