What type of symmetry do starfish exhibit?

What type of symmetry do starfish exhibit?

• A. Bilateral symmetry.
• B. Radial symmetry.
• C. Asymmetrical shape.
• D. Symmetrical shape.

Answer: (B)

Starfish exhibit radial symmetry, which means their body can be divided into similar halves around a central axis. This type of symmetry is common in marine organisms that are adapted to a sedentary or slow-moving lifestyle. In the case of starfish, their five arms are arranged around their central body, allowing them to interact with the environment uniformly from various angles. Radial symmetry is particularly advantageous for species that might need to sense their surroundings from multiple directions without a defined front or back. This characteristic helps starfish in feeding, movement, and protection in their underwater habitats.

Starfish exhibit radial symmetry, which means their body can be divided into similar halves around a central axis. This type of symmetry is common in marine organisms that are adapted to a sedentary or slow-moving lifestyle. In the case of starfish, their five arms are arranged around their central body, allowing them to interact with the environment uniformly from various angles. Radial symmetry is particularly advantageous for species that might need to sense their surroundings from multiple directions without a defined front or back. This characteristic helps starfish in feeding, movement, and protection in their underwater habitats.