If a non poisonous snake of species A, mimics the warning colouration of a poisonous snake of species B, which of the following will hold true ?

Options

A. B will survive better when there is abundance of A
B. B will not affect the survival of A
C. A will survive better in absence of B
D. A will survive better when there is abundance of B

Answer

To solve the question regarding the mimicry between a non-poisonous snake of species A and a poisonous snake of species B, we can follow these steps:

### Step-by-Step Solution:

1. **Understand the Concept of Mimicry**:
- Species A (non-poisonous) mimics the warning coloration of species B (poisonous). This type of mimicry is known as Batesian mimicry, where a harmless species evolves to imitate the warning signals of a harmful species to avoid predation.

2. **Identify the Roles**:
- In this scenario, species B is the model (the poisonous snake), and species A is the mimic (the non-poisonous snake). The mimicry helps species A avoid being eaten by predators that have learned to associate the coloration of species B with danger.

3. **Analyze the Options**:
- **Option A**: B will survive better when there is an abundance of A.
- This is incorrect because the presence of A does not enhance the survival of B; rather, it may confuse predators.
- **Option B**: B will not affect the survival of A.
- This is also incorrect because the presence of B (the poisonous snake) is crucial for A's mimicry strategy to be effective.
- **Option C**: A will survive better in the absence of B.
- This is incorrect because A relies on the presence of B to mimic its warning coloration and thus avoid predation.
- **Option D**: A will survive better when there is an abundance of B.
- This is correct because the more abundant B is, the more effective the mimicry of A becomes, leading to better survival for A.

4. **Conclusion**:
- The correct answer is that A will survive better when there is an abundance of B. This is due to the protective adaptation that allows A to avoid predation by resembling the harmful species B.

### Final Answer:
**A will survive better when there is an abundance of B.**