Question

quiz: plant and animal systems, and behavior
animals must digest food once it’s consumed. the diagram shows the steps involved in which type of digestion?
a) digestive tract absorption
b) extracellular digestion
c) intracellular digestion
d) acid mediated digestion

Explanation:

1. Analyze Option A: Digestive tract absorption involves a specialized digestive tract (like in vertebrates), but the diagram shows a single - celled - like structure (with nucleus, lysosomes, etc.) without a distinct digestive tract, so A is incorrect.
2. Analyze Option B: Extracellular digestion occurs outside the cell (e.g., in the lumen of the digestive tract). The diagram shows digestion happening within the cell (food vacuole, lysosomes inside the cell), so B is incorrect.
3. Analyze Option C: Intracellular digestion occurs within the cell. The diagram shows a food particle being taken in, forming a food vacuole, and then lysosomes (which contain digestive enzymes) acting on the food vacuole - all within the cell. This matches the process of intracellular digestion (e.g., in amoeba).
4. Analyze Option D: Acid - mediated digestion is a part of some digestive processes but is not a broad category of digestion type like intracellular/extracellular. The diagram focuses on the location of digestion (within the cell) rather than the medium (acid), so D is incorrect.

Answer:

C) Intracellular digestion