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:Which of the following methods of plant propagation…A rock through which water cannot easily pass is termed?The following crops can be grown as cover crops except?Which of the following soil properties cannot be…The following crops are fiber crops except?