The first sex attractant pheromone identified was that of

Options

A. Cat
B. Dog
C. Gypsy moth
D. Human

Answer

To solve the question regarding the first sex attractant pheromone identified, we can follow these steps:

### Step 1: Understand the Concept of Pheromones
Pheromones are chemical substances secreted by an organism that influence the behavior or physiology of others of the same species. They play a crucial role in communication, especially in mating behaviors.

**Hint:** Remember that pheromones are specific to species and are used for communication.

### Step 2: Analyze the Options Given
The options provided are:
1. Cat
2. Dog
3. Gypsy Moth
4. Human

We need to determine which of these organisms had the first identified sex attractant pheromone.

**Hint:** Consider the history of pheromone research and which species has been studied extensively in this context.

### Step 3: Recall Historical Context
The first pheromone identified was in the context of the gypsy moth. Researchers discovered that the female gypsy moth releases a specific chemical to attract males for mating.

**Hint:** Think about the significance of the gypsy moth in the study of pheromones.

### Step 4: Confirm the Answer
Based on historical research, the correct answer is that the first sex attractant pheromone was identified in the gypsy moth.

**Hint:** Look for confirmation from reliable sources or scientific literature regarding the identification of pheromones.

### Final Answer
The first sex attractant pheromone identified was that of the gypsy moth (Option 3).