Black and White Beans

The rate of growth of black and white beans is a controversial issues as they both require the same conditions to germinate and grow but their prevalence varies due to differences in their genetic composition. The adaptability that led to the variation of the various types of beans proves that there are beans that are highly adaptable to extreme conditions. Therefore, the most adaptive beans are most likely to grow faster than the rest given the same conditions. Black and white beans visibly bear different phenotypic manifestations proving a difference in their genotype. The difference that arises from this genetic difference forms the basis of this experiment.

Research Questions

  1. Do black and white beans grow at the same rate?
  2. Do black beans have a higher chance of growing than white beans?
  3. Do white beans have a higher chance of growing than black beans?

Procedure and Methods

Materials Used

  • White and black beans
  • Plastic cups
  • Cotton
  • Water
  • Ruler


Several black and white beans were each on top cotton stuffed into plastic cups.

The plastic cups were placed beside a window where the seeds could access sunlight.

The beans were watered twice on a daily basis.

The number of each type of beans that grew were counted and recorded.

Steps 3 and 4 were repeated for 13 days.


The number of white and black beans that grew within the 13 days in which the experiment covered were put up in a table for analysis. The change in number of beans that grew on a daily basis increased within the white beans while it gradually decreased for the black beans. The white beans grew at a much lower rate than the black beans during the first few days. However, at the end of the experiment, more white beans were growing per day in relation to black beans. In total, more black beans (494) grew compared to white beans (282).


The growth of black beans in a given culture with same conditions of temperature, amount of water, environment of growth (cotton) and sunlight supersedes the growth of white beans.  The constant factors like time interval of counting and the type of beans go to show that both beans were given the same opportunity to grow. Among the processes that required various conditions to proceed were germination, photosynthesis and flowering. The black beans utilize the resources availed to it more that white beans to develop faster than them. The result of this is the reduced and slow growth of the white beans relative to the black beans. This elucidates why later on in the experiment the white beans grow more than the black beans; they hit their climax of growth later than the black beans. The overall number of white beans is less relative to the number of black beans illustrating the superiority of the black beans to the white beans in adaptation to the same conditions.

Limited time Offer

Get 19% OFF


Black beans are more likely to grow than white beans in a given set of conditions. The number of successful germinations and eventual growth to flowering and fruition is more prevalent in black beans than in white beans.



Preparing Orders


Active Writers


Support Agents

Limited offer Get 15% off your 1st order
get 15% off your 1st order with code first15
  Online - please click here to chat