AP BIOLOGY

Detailed explanation-1: -Waterbirds such as duck and goose have webbed feet that help them to swim in the water. The front toes of these birds are joined by, giving them a flat appearance. This helps them to push water while swimming. A duck’s foot has the ability to become wider.

Detailed explanation-2: -Webbed feet are ideal for birds that swim, on the water’s surface or under. In fact, they’re such a nifty adaptation that they evolved, independently, in several bird groups. Ducks and geese have them, as do gulls, cormorants, loons, pelicans, penguins, puffins and boobies.

Detailed explanation-3: -Ducks, geese, and swans all have webbed feet. The primary use for webbed feet is paddling through water. Here’s how it works: as the bird pulls its foot backwards through the water, the toes spread apart, causing the webs to spread out. The webs push more water than just a bird foot with spread-out toes would push.

Detailed explanation-4: -The webbed feet helps the ducks to paddle through water.

Detailed explanation-5: -Waterfowl developed webbed feet to help them swim and dive more efficiently in wetland environments. While swimming, waterfowl push both backward and downward with their legs and feet. The webbing between their toes spreads out on the down stroke to create more surface area and push more water.