The correct answer is: A. assemblage of plant species living in association with each other in a given environmental frame.
Flora is the plant life of a particular region or time period. It can also refer to a list of all the plant species in a particular area. The term flora is derived from the Latin word “floris,” which means “flower.”
The plant life of a region is determined by a number of factors, including climate, soil type, and altitude. The plants that live in a particular area are adapted to the conditions of that area. For example, plants that live in a desert are adapted to dry conditions, while plants that live in a rainforest are adapted to wet conditions.
The plant life of a region can play an important role in the ecosystem. Plants provide food and shelter for animals, and they help to regulate the climate. Plants also play a role in the water cycle, as they absorb water from the soil and release it into the atmosphere through transpiration.
The plant life of a region can also be used for economic purposes. For example, trees can be used to produce wood, and plants can be used to produce food and medicine.
Here is a brief explanation of each option:
- Option A: Assemblage of plant species living in association with each other in a given environmental frame. This is the correct answer, as it is the most inclusive definition of flora.
- Option B: Plants of a particular region or period, listed by species and considered as a group. This definition is narrower than option A, as it does not include plants that are not listed by species.
- Option C: A large tract covered by trees and shrubs and its administration for assessing economic benefits. This definition is too specific, as it does not include all types of plants.
- Option D: Role played by species of animals in the maintenance of ecological balance. This definition is not relevant to the question, as it is about animals, not plants.