Which one of the following is not a parasitic adaptation?

Options

A. Loss of unnecessary sense organs
B. Development of adhesive organs
C. Loss of digestive organs
D. Loss of reproductive capacity

Answer

To determine which of the following options is not a parasitic adaptation, we need to analyze each option in the context of how parasites have evolved to survive and thrive in their environments:

1. **Loss of unnecessary sense organs**:
- Parasites often live in environments where they are completely dependent on their hosts for survival. As a result, they do not require advanced sensory organs to navigate their environment. This adaptation is common among parasites, as they have evolved to lose these unnecessary structures.

2. **Development of adhesive organs**:
- Many parasites develop specialized structures that allow them to attach firmly to their hosts. These adhesive organs are crucial for their survival as they help the parasite remain in place while feeding on the host's resources.

3. **Loss of digestive organs**:
- Since parasites obtain nutrients directly from their host, they often do not need a fully functional digestive system. This leads to the loss of digestive organs, as they can absorb nutrients directly from the host's body.

4. **Loss of reproductive capacity**:
- Unlike the previous adaptations, parasites typically do not lose their reproductive capacity. In fact, many parasites have high reproductive rates to increase their chances of survival and transmission to new hosts. This adaptation is essential for their life cycle and proliferation.

Based on this analysis, the option that is not a parasitic adaptation is:

**Answer: Loss of reproductive capacity (Option D)**

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