Which of the following crops cannot be easily improved by cross-breeding? by Sunday | Jul 9 | Agricultural Science WAEC | 0 comments A. groundnut B. cowpea C. oil palm D. maize E. yam Correct Answer: Option E – yam Users Also Read These:The ways by which a pasture can be improved include…Assets of a business which cannot easily be changed…The property of soil which cannot easily be changed…In crop rotation, deep-rooted crops should follow…Which of the following cannot be easily abused?