In which domain, kingdom, phylum should we put an unknown plant having, lignin test negative, cuticle present, leaves absent, photosynthesis present, contains chlorophyll a, b, B carotenes, xanthophylls, roots absent, stem absent, bottom two regions of the plant produce gametes, top third of plant produce spores?

1. Habitat

2. Niche

Explanation:

Two different species can have a same habitat. An habitat is a place where an organism survive and completes it's life cycle. But they cannot have the same niche. A niche is the functional role that an organism plays in it's habitat. Like the way it derives it's food, choice of mating season, and others.

According to competition exclusion principle if the two different species occupy the same niche. The one which is more competitive and superior over the other derives all the resources. Thus the inferior species is excluded from the environment or occupied area.