Embryological support for evolution was proposed by:

Options

A. Ernst Heckel
B. Karl Ernst von Baer
C. Charles Darwin
D. Alfred Wallace

Answer

To solve the question regarding who proposed the embryological support for evolution, we can follow these steps:

### Step 1: Understand the Concept
Embryological support for evolution refers to the idea that the embryonic development of different species shows similarities, suggesting a common ancestry.

**Hint:** Look for scientists who studied embryology and its relation to evolution.

### Step 2: Identify Key Figures
The question provides four options:
- A. Ernst Haeckel
- B. Karl Ernst von Baer
- C. Charles Darwin
- D. Alfred Wallace

**Hint:** Consider the contributions of each scientist to embryology and evolution.

### Step 3: Recall Historical Context
Ernst Haeckel is known for his famous phrase "ontogeny recapitulates phylogeny," which suggests that the development of an individual organism (ontogeny) follows the same progression as the evolutionary history of that organism's species (phylogeny).

**Hint:** Think about who made significant claims regarding embryonic development and evolution.

### Step 4: Analyze the Options
- **Ernst Haeckel** proposed the idea of embryological support for evolution.
- **Karl Ernst von Baer** is known for critiquing Haeckel's ideas and emphasizing that embryos of different species do not follow a strict sequence of adult forms.

**Hint:** Determine who proposed the theory and who criticized it.

### Step 5: Conclusion
Based on the historical contributions, the correct answer to the question is **A. Ernst Haeckel**.

**Final Answer:** A. Ernst Haeckel