Final answer:
The specific term for the systematically modified environments designed for domesticated plant cultivation is a 'managed ecosystem' or 'agroecosystem.' These tailored agricultural settings support crops that have been selectively bred to maximize yields under optimized conditions. However, cultivated plants often cannot thrive outside these ecosystems without human intervention.
Step-by-step explanation:
The systematically modified environment (or constructed niche) that becomes the only environment within which domesticated plants can flourish is often referred to as a managed ecosystem or agroecosystem. These terms represent areas where conditions have been deliberately altered to support the growth and production of specific crops. Domesticated plants are highly adapted to these managed ecosystems, which have been modified through agricultural practices such as soil management, irrigation, the application of fertilizers, and the selection of plant varieties for specific traits.
Through a long history of artificial selection and breeding, many crops have evolved to thrive in environments that cater to their biological requirements for light, water, soil nutrients, and temperature. These managed ecosystems are designed to optimize the conditions for plant growth and yield, often leading to environments quite distinct from the plants’ natural habitats. This intensive management of crops allows for higher productivity, but it also means that these domesticated plants are less likely to survive outside these tailored environments.