Multicellular animals do not exhibit

Options

A. biradial symmetry
B. spherical symmetry
C. radial symmetry
D. bilateral symmetry

Answer

To answer the question "Multicellular animals do not exhibit," we need to analyze the options provided: bi-radial symmetry, spherical symmetry, radial symmetry, and bilateral symmetry.

### Step-by-Step Solution:

1. **Understanding Symmetry Types**:
- **Bi-radial Symmetry**: This type of symmetry is characterized by having two planes of symmetry. It is typically seen in organisms like Cnidarians (e.g., jellyfish). Since these are multicellular organisms, bi-radial symmetry does not fit our question.

2. **Bilateral Symmetry**:
- **Bilateral Symmetry**: This symmetry is where the organism can be divided into two identical halves along one plane. Most multicellular animals, including vertebrates (like mammals, birds) and invertebrates (like insects, worms), exhibit bilateral symmetry. Thus, this option is also incorrect for our question.

3. **Radial Symmetry**:
- **Radial Symmetry**: This symmetry allows an organism to be divided into similar halves by multiple planes passing through the center. Organisms like sea anemones and starfish (Echinoderms) show radial symmetry, and they are multicellular. Therefore, this option does not answer our question either.

4. **Spherical Symmetry**:
- **Spherical Symmetry**: This type of symmetry is where the organism can be divided into similar halves by any plane that passes through the center. It is typically found in some unicellular organisms, such as certain protozoans (e.g., Radiolaria and Heliozoa). Multicellular organisms do not exhibit spherical symmetry. Thus, this is the correct answer to the question.

### Final Answer:
**Multicellular animals do not exhibit spherical symmetry.**