NEET BIOLOGY

Detailed explanation-1: -Discover Symbiosis Commensalism is when only one organism benefits from the interaction, and the other is not affected. For example, when bison walk through grass, insects become active and are seen and eaten by cowbirds. The cowbirds benefit from the bison, but the bison is neither harmed nor benefited.

Detailed explanation-2: -Why is a cowbird egg in someone else’s nest? Cowbirds are brood parasites, which means females lay their eggs in the nests of other birds and let the other mother bird do all of the rearing.

Detailed explanation-3: -Cowbird eggs are sometimes, but not always, larger than those of the host bird. This is especially true of warblers and small birds, but cowbird eggs are the same size as Northern Cardinal eggs. Cowbird eggs are white to grayish-white with brown or gray spots or streaks.

Detailed explanation-4: -Mutualism. Identify the type of symbiosis described. The brown-headed cowbirds lay eggs in other birds’ nests. They trick the birds into raising their young.