The answer is Protista.
The dichotomous key is used to identify the taxonomic category of an organism. So, if we start with statements from the beginning, and discard the possibilities, we can put the organism into some taxonomic group.
Accordingly, we know that a stentor has a nucleus, so it must be eukaryotic. Among the Eukaryotes, it could belong to the kingdom of Protista, Fungi, Plantae and Animalia. Since it is unicellular organism and lives only in the water, it could belong only to the kingdom of Protista
Answer:
It involves the movement of water into and out of various reservoirs, including the atmosphere, land, surface water, and groundwater. This cycle is driven by radiation from the Sun. The movement of water within the water cycle is the subject of the field of hydrology.
Explanation:
The time periods of the Paleozoic and Mesozoic are subdivided into early, middle, and late unlike in the Cenozoic because the number of fossils discovered outnumbers the quantity needed to subdivide the periods based on the presence of organisms.
<span>Early, middle and late time are geological times. Time periods were subdivided because of the major evolutionary events in the fossil record during the Paleozoic and Mesozoic era. </span>
Under Mesozoic:
<span>· </span>Cretaceous
<span>· </span>Jurassic and
<span>· </span>Triassic
Uner Paleozoic:
<span>· </span>Permian
<span>· </span>Carboniferous
<span>· </span>Devonian
<span>· </span>Silurian
<span>· </span>Ordovician and
<span>· </span>Cambrian
<span>While in Cenozoic we have the tertiary or mammals diversity only.</span>
Answer:
Peptidoglycan layer.
Explanation:
The thickness of the peptidoglycan protein layer is the main difference between gram negative, and gram positive bacteria. Gram positive bacteria contains thick peptidoglycan layer which retains the gram staining, and making the bacteria purple under the microscope.
Gram negative bacteria contains thin peptidoglycan layer which do not retain the gram staining, and making the bacteria pink under the microscope.