Question

True species are
A. interbreeding
B. Sharing the same niche
C. Feeding on same food
D. Reproductively isolated

Answer 1

Hint:
Before answering the question, we should know about true species and their categories.
A group of inbreeding populations that are reproductively isolated from other populations of its kind constitutes a species. Prezygotic and postzygotic barriers exist between species, preventing mating or the generation of viable, fruitful offspring. According to the biological species idea, populations that actually or potentially interbreed in nature constitute a species, not features that resemble one another. Although appearance can be used to distinguish between species, it does not define them.

Complete answer:
The only interbreeding that occurs between true species and results in viable offspring is between them. Geographic isolation or particular traits that make it possible for individuals of a species to recognise one another could be to blame for this. Reproductive isolation enables organisms to develop into unique species that cannot interbreed once their populations are once again contiguous.
So, the true species are Reproductively isolated.

Option ‘D’ is correct

Note:
No two species share the same niche, which is distinctive to each species. However, because of competition, there can be significant overlap between niches within a given environment. Two species will compete for all available resources if they indeed occupy the same niche. When one species outcompetes another, the latter must either adapt or risk going extinct. Competitive exclusion is the term used for this. If two niches overlap, it indicates that two species share a resource. Resources include anything that both species require to thrive and procreate, such as food and living space.