Organisms which breed only once is their life time

Options

A. pacific salmon fish
B. bamboo
C. both 1 and 2
D. none of these

Answer

To answer the question "Organisms which breed only once in their lifetime," we can follow these steps:

### Step 1: Understand the Concept of Reproductive Strategies
Reproductive strategies in organisms can vary significantly. Some organisms reproduce multiple times throughout their lives (iteroparous), while others reproduce only once (semelparous).

### Step 2: Identify Examples of Semelparous Organisms
From the question, we need to identify organisms that breed only once in their lifetime. Two well-known examples of such organisms are:
- **Pacific Salmon**: These fish are known for their life cycle where they migrate to spawn once and then die shortly after.
- **Bamboo**: Certain species of bamboo flower and produce seeds only once every several decades, after which the plant dies.

### Step 3: Analyze the Options Given
The options provided are:
A. Pacific Salmon
B. Bamboo
C. Both 1 and 2
D. None of these

Since both Pacific Salmon and Bamboo are known to breed only once in their lifetime, we can conclude that option C is correct.

### Step 4: Conclusion
The organisms that breed only once in their lifetime are Pacific Salmon and Bamboo. Therefore, the correct answer is option C: Both 1 and 2.

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