alleryStart learning →Which relationship does the term endosymbiosis describe?
AOne organism living inside another
BTwo organisms competing for food
COne organism killing its neighbour
DTwo organisms sharing an outer wall
Answer & Solution
Correct answer: A. One organism living inside another
1. Symbiosis is a relationship in which organisms from two separate species depend on each other for survival.
2. The prefix endo means within.
3. Endosymbiosis is therefore a mutually beneficial relationship in which one organism lives inside the other.
4. Microbes producing vitamin K inside the human gut are given as an everyday example.
5. The relationship is one organism living inside another.
_Source: OpenStax Biology (1st ed., CC BY 4.0), Ch 4 "Cell Structure", section 4.3 Eukaryotic Cells_
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