Question

Which one of the following is a characteristics feature of cropland ecosystem ?

• A. Absence of soil organisms
• B. Least genetic diversity
• C. Absence of weeds
• D. Ecological succession

Answer 1

The correct option is B Least genetic diversity

In crop lands genetically uniform seeds are planted under uniform conditions. Monocultural agriculture thus causes low crop diversity, especially when the seeds are mass-produced or when plants (such as grafted fruit trees and banana plants) are cloned. So least genetic diversity is a characteristic of crop lands.
Soil organisms and weeds are present in all types of ecosystems including cropland ecosystem.
Ecological succession is the process by which the structure of a biological community evolves over time.