Choose the correct pair from the following regarding responses to abiotic factors.

Options

A. Aestivation : Phytoplankton
B. Hibernation : seals
C. Dormancy : snails
D. Diapause : zooplankton

Answer

To solve the question regarding the correct pair of responses to abiotic factors, we will analyze each option provided in the question.

### Step-by-Step Solution:

1. **Understanding Hibernation:**
- Hibernation is a state of inactivity and metabolic depression in animals during winter. It allows them to conserve energy when food is scarce.
- Common examples include bears, bats, and ground squirrels.
- **Given Pair:** Hibernation is to seals.
- **Analysis:** Seals do not hibernate; they have thick blubber that helps them survive cold temperatures. Therefore, this pair is incorrect.

2. **Understanding Dormancy:**
- Dormancy refers to a period in an organism's life cycle when growth, development, and physical activity are temporarily stopped. This helps conserve energy.
- **Given Pair:** Dormancy is to snails.
- **Analysis:** Snails do not exhibit dormancy; they are known to estivate during dry conditions. Thus, this pair is also incorrect.

3. **Understanding Estivation:**
- Estivation is a state of dormancy that occurs in response to high temperatures and dry conditions, allowing organisms to survive unfavorable conditions.
- **Given Pair:** Estivation is to phytoplankton.
- **Analysis:** Phytoplankton do not estivate; they are primarily affected by light and nutrient availability. Hence, this pair is incorrect.

4. **Understanding Diapause:**
- Diapause is a period of suspended development in response to unfavorable environmental conditions, often seen in response to extreme temperatures or lack of resources.
- **Given Pair:** Diapause is to zooplankton.
- **Analysis:** Zooplankton can enter diapause to survive adverse conditions. Therefore, this pair is correct.

### Conclusion:
The correct pair regarding responses to abiotic factors is **Diapause is to Zooplankton** (Option D).

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