Question

multiple choice question
the term that describes one organism living inside the other is ______.

endocatalysis

pinocytosis

parasitism

endosymbiosis

Explanation:

• Endocatalysis refers to catalytic reactions occurring within a structure, not organism cohabitation.
• Pinocytosis is a cell's process of absorbing liquid, not inter-organism living.
• Parasitism is a relationship where one organism benefits at another's expense, but it does not specifically mean living inside the host (some parasites live externally).
• Endosymbiosis is specifically defined as a relationship where one organism lives inside another.

Answer:

D. endosymbiosis