Correct answer: 2
The systematics develops various classifications (division into groups-taxa) on the basis of kinship.
The smallest" official " taxon are species. Similar species are combined in genus, etc.
In the most General form:
physiology answers the question "how does it work?"(the science of functions);
ecology-the science of the environment, organisms living in it, and their interaction with each other and the environment;
morphology-the science of (external) structure. Here we have to be careful when selecting answers in the exam, the drafters very often (and incorrectly) interchanged morphology (external structure) and anatomy (internal structure).
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