Pneumatophores are negatively .......

Explanation

### Step-by-Step Solution:

1. **Understanding Pneumatophores**: Begin by identifying what pneumatophores are. They are specialized structures that arise from the roots of certain plants, particularly those that grow in waterlogged or saline environments.

2. **Defining Geotropism**: Next, we need to understand the term "geotropic." Geotropism refers to the growth response of a plant in relation to gravity. It can be positive (growth towards gravity) or negative (growth away from gravity).

3. **Identifying the Response of Pneumatophores**: Pneumatophores are known to exhibit a negative geotropic response. This means that instead of growing downwards towards gravity, they grow upwards, away from the gravitational pull.

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