Complex animals digest food outside of cells in a digestive system. This is known as
a. Extracellular digestion
b. Intracellular digestion
c. Open digestion
d. Closed digestion
If you'd Googled the word or looked it up in a dictionary, you'd have found that intra- means within.
Which of those terms means outside the cells?
Intracellular digestion?
The correct answer is a. Extracellular digestion.
To arrive at this answer, we can break down and understand each option:
a. Extracellular digestion - This refers to the process by which complex animals digest their food outside of their cells, in a specialized digestive system. This includes breaking down food into smaller molecules that can be absorbed and used for energy.
b. Intracellular digestion - This refers to the process where digestion occurs within the cells of an organism. This type of digestion is commonly found in simpler organisms like protozoa and certain types of sponges.
c. Open digestion - This is a type of digestion seen in organisms with a simple body plan, where the digestive system is not compartmentalized and food is directly absorbed into cells from the environment.
d. Closed digestion - This term is not commonly used and does not accurately describe the process of digestion.
Based on the definitions above, it is clear that option a. Extracellular digestion is the correct choice for animals with complex digestive systems.