Question

Overlapping region between two ecosystems is called
a. Biome
b. Ecotone
c. Niche
d. Photic zone

Answer 1

Hint: Ecosystem is nothing but a geographical area consisting of all plants, animals, and other living organisms along with nature and the together to form life, and this ecosystem consists of both biotic and abiotic things together.

Complete answer:
- The overlapping between the two ecosystems is considered as Ecotone.
- It is the transition area between two biocommunities, here where both communities integrate each other and it may be local or regional.
- The term ecotone is coined by the combination of both ecology and tone, and it is the meaning that two ecosystems are in tension.
- For an ecotone, there should be a sharp vegetative transition line that is present between the two ecosystems.
- For example, if there is a change in the color of the grass or a plant life indicates the ecotone and at the same time, physiognomy which means that change in the physical features of the plants is also the feature of the ecotone. And even the change in species is also considered as an ecotone.
- The ecotone may form by the species migration, and if the species fight each other and survive in both communities of the ecosystem, then one can say that ecotone has species richness.
- Ecotone has the ability to reveal the efficiency of the two biomes or ecotone.
- This ecotone is formed by a change in the environment.

Hence, the correct answer is option (B).

Note: Ecoline is the variation of the physicochemical environment which is formed based on the physical and chemical factors, and It can be presence or absence of species and this Ecoline is sometimes associated with the Ecotone.