Which of the following will be least adversely affected by predation ?

Options

A. Grass
B. Rabbit
C. Deer
D. Lion

Answer

To determine which organism will be least adversely affected by predation among the options given (grass, rabbit, deer, and lion), we can analyze the relationships between these organisms in terms of predator and prey dynamics.

### Step-by-Step Solution:

1. **Understanding Predation**:
- Predation is a biological interaction where one organism (the predator) kills and eats another organism (the prey).
- In this context, we need to identify which of the given organisms is least impacted by being preyed upon.

2. **Analyzing Each Option**:
- **Grass**:
- Grass is a primary producer and does not have natural predators in the same sense as animals. However, it can be consumed by herbivores like rabbits and deer.
- **Rabbit**:
- Rabbits are herbivores and are preyed upon by various predators, including lions. Thus, they are adversely affected by predation.
- **Deer**:
- Similar to rabbits, deer are also herbivores and can be preyed upon by carnivores like lions. They are negatively affected by predation as well.
- **Lion**:
- Lions are apex predators. They do not have natural predators in their ecosystem, meaning they are not adversely affected by predation.

3. **Conclusion**:
- Among the options, the lion, being a predator, is least adversely affected by predation because it does not fall prey to other animals. Therefore, the correct answer is **lion**.

### Final Answer:
- The organism least adversely affected by predation is **lion**.