Question

what is the difference between varieties and species of a plant?

Answer 1

Comparative physiological studies on the growth of field crops: I. Variation in net assimilation rate and leaf area between species and varieties, and within and between years

D Jh Watson

Annals of botany 11 (41), 41-76, 1947

Results:

Part I. Net Assimilation Rate Seasonal variation........... 48 Variation from year to year.......... 50 Differences between species.......... 54 Varietal differences........... 55 The effect of time of sowing......... 57 Relation of NAR to climatic factor

Answer 2

species of plant in a particular area means flora .for ex. cactus are species Rajasthan . variety of plant called biodiversity