Question

Which of the following is an adaptation to a terrestrial way of life in the snail?

• A. Using the mantle instead of gills for respiration
• B. Cephalization with antennae and eyes
• C. Hatchet foot for crawling.
• D. Torsion so that anus is above the head.

Answer 1

Answer: (A)

Using the mantle instead of gills for respiration

All snails living on land have made many adaptations to survive. Their main adaptation is their evolution from aquatic organisms to terrestrial, or land, organisms. They have done this by losing their gills and forming air-breathing lungs. The air-breathing lung is an adaptation of the mantle that works by contracting its muscles within the mantle to move air in and out of the lung sac.

So, the correct option is 'Using the mantle instead of gills for respiration'.