Question

Which of the following differs in its chief economic importance?

• A. Helianthus annuus
• B. Brassica juncea
• C. Allium cepa
• D. Arachis hypogea

Answer 1

The correct option is C Allium cepa

Helianthus annuus (Sunflower) is economically important as a crop for extraction of edible oil and edible seeds. Moreover, sunflower species are also used as bird food, as livestock forage as well as some industrial applications.
Brassica juncea or Mustard, is also economically important as species is cultivated mainly for oil extraction and occasionally for fodder.
Arachis hypogea or Groundnut or Peanut is also economically important as an oil crop. The non-drying, edible oil extracted from the seeds of this plant is extensively used as cooking medium, margarines, salads, canning. Besides the oil cake is a high-protein livestock feed.
Allium cepa on the other hand is cultivated for its importance as a commercial spice crop.